CN102766716A - Slag-free production process of ilmenite - Google Patents
Slag-free production process of ilmenite Download PDFInfo
- Publication number
- CN102766716A CN102766716A CN2012102796948A CN201210279694A CN102766716A CN 102766716 A CN102766716 A CN 102766716A CN 2012102796948 A CN2012102796948 A CN 2012102796948A CN 201210279694 A CN201210279694 A CN 201210279694A CN 102766716 A CN102766716 A CN 102766716A
- Authority
- CN
- China
- Prior art keywords
- ilmenite
- slag
- stove
- molten
- titanium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 78
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 55
- 239000010936 titanium Substances 0.000 claims abstract description 55
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 46
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 44
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 38
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 37
- 239000011651 chromium Substances 0.000 claims abstract description 37
- 239000011591 potassium Substances 0.000 claims abstract description 37
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 37
- 239000003513 alkali Substances 0.000 claims abstract description 25
- 229910052742 iron Inorganic materials 0.000 claims abstract description 23
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 239000011734 sodium Substances 0.000 claims abstract description 21
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 21
- 238000010791 quenching Methods 0.000 claims abstract description 15
- 239000003245 coal Substances 0.000 claims abstract description 14
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 13
- 239000011777 magnesium Substances 0.000 claims abstract description 13
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 13
- 239000010703 silicon Substances 0.000 claims abstract description 13
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 13
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011575 calcium Substances 0.000 claims abstract description 12
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 53
- 239000000463 material Substances 0.000 claims description 44
- 230000004927 fusion Effects 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 239000002918 waste heat Substances 0.000 claims description 16
- -1 metal oxide compound Chemical class 0.000 claims description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 14
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 14
- 159000000000 sodium salts Chemical class 0.000 claims description 14
- 239000004411 aluminium Substances 0.000 claims description 10
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 239000001103 potassium chloride Substances 0.000 claims description 9
- 235000011164 potassium chloride Nutrition 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000002912 waste gas Substances 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 150000001447 alkali salts Chemical class 0.000 claims description 7
- 229910052785 arsenic Inorganic materials 0.000 claims description 7
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 239000011737 fluorine Substances 0.000 claims description 7
- 229910052731 fluorine Inorganic materials 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 7
- 235000017550 sodium carbonate Nutrition 0.000 claims description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 7
- 235000013024 sodium fluoride Nutrition 0.000 claims description 7
- 239000011775 sodium fluoride Substances 0.000 claims description 7
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 7
- 239000011593 sulfur Substances 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000006722 reduction reaction Methods 0.000 abstract description 3
- 150000002222 fluorine compounds Chemical class 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 150000004706 metal oxides Chemical class 0.000 abstract 2
- 238000001035 drying Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 5
- 229940072033 potash Drugs 0.000 description 5
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 5
- 235000015320 potassium carbonate Nutrition 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 3
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical class [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a slag-free production process of ilmenite, which comprises the following steps: a) preparing a mixed raw material by ilmenite, chromium slag and coal according to a ratio; b) drying and pre-reducing the mixed raw material in a rotary kiln; c) feeding a reduced raw material into a melting and separating furnace, melting and separating iron from the slag; and d) performing solid-liquid separation on the high-aluminum titanium clinkers in a quenching tank to obtain the solid light metal oxides of silicon, calcium, magnesium, aluminum, titanium and the like. The production process has the following advantages that sodium/potassium alkali and fluorides in the chromium slag play a role in catalyzing and fluxing in the reduction reaction of ilmenite and carbon, so that the separation of iron and titanium is fast and thorough, and the harmful substances in the chromium slag are effectively utilized; at the same time, sodium/potassium alkali and fluorides are evaporated as gas, and recycled after being cooled; the yield of iron reaches 99% or more; the light metal oxides of aluminum, titanium, silicon, calcium, magnesium and the like are subjected to a conventional process so as to obtain alumina, titanium oxide and the like; the harmful chromium slag as the industrial residue becomes an indispensable industrial raw material, and harm is turned into benefit, thereby realizing the slag-free production process.
Description
Technical field
The invention belongs to the Metal smelting technical field, be specifically related to a kind of no slag production technique of ilmenite.
Background technology
In the prior art, the production technique of using ilmenite to produce titanium oxide is, ilmenite added carbon make ball, gets into electric furnace through sintering, with temperature be controlled at 1600 ℃～more than 1800 ℃ even 1800 ℃,, realize that slag iron separates through carbon reduction, high-temperature fusion.The upper strata obtains titanium slag, and lower floor obtains heating molten steel.Because this kind method need consume a large amount of electric energy, and produces a large amount of waste gas, promptly running cost is quite high, pollutes very big.
In the chromium slag of producing the generation of sodium dichromate 99 or SRM 935a, contain a large amount of sodium, potash, and a large amount of calcium oxides and sexavalent chrome.These materials not only produce severe contamination to environment, and sexavalent chrome is carcinogenic substance, greatly threaten people and vegeto-animal safety.Also there is not economically viable method at present, with chromium slag resource utilization, turn bane into boon.
Summary of the invention
The technical problem that the present invention will solve is: overcome the deficiency of prior art, a kind of no slag production technique of ilmenite is provided, it can separate each element in ilmenite, the chromium slag fully and utilize, turns bane into boon, and running cost is very low, economic benefit is very high.
The technical solution adopted for the present invention to solve the technical problems is: the no slag production technique of ilmenite is characterized in that: comprise the steps: a) according to a certain percentage ilmenite, chromium slag, coal to be processed mixed raw material; B) above-mentioned mixed raw material is joined in the rotary kiln,, generate the reducing material that is the semi-melting state through oven dry, prereduction; C) above-mentioned reducing material is joined molten the branch in the stove, carry out fusion, the separation of slag iron; The high alumina titanium grog on upper strata is discharged by the outlet of high alumina titanium grog, and the heating molten steel of lower floor is flowed out by the heating molten steel outlet; D) the high alumina titanium grog of high alumina titanium grog outlet discharge gets into shrend in the watch-quench tank; Common process such as warp grinds, acidleach goes out obtain solid silicon, calcium, magnesium, aluminium, titanium light metal oxide compound.
Preferably, in the said step a), ilmenite, chromium slag mix according to weight ratio 1: 0.5～2.5; The weight of coal be ilmenite and chromium slag mixture gross weight 20%～50%; In the said step b), rotary kiln temperature is 800～1460 degree Celsius; Mixed raw material is dried in rotary kiln, the time of prereduction is 2～10 hours; In the said step c), above-mentioned reducing material enters into molten the branch in the stove through 1～4 hour by rotary kiln through enclosed passage, carries out fusion, slag iron separates; The high alumina titanium grog on upper strata is discharged by the outlet of high alumina titanium grog, and the heating molten steel of lower floor is flowed out by the heating molten steel outlet; In the said step d), the high alumina titanium grog that the outlet of high alumina titanium grog is discharged gets into shrend in the watch-quench tank; Common process such as warp grinds, acidleach goes out obtain solid silicon, calcium, magnesium, aluminium, titanium light metal oxide compound.
Preferably, in the said step b), the temperature in the rotary kiln from the afterbody to the head edges up to 1460 degree from 800 degree Celsius.
Preferably, in the said step c), said molten minute furnace head installed at least one gas gun, and the muzzle of gas gun is towards said molten minute stove afterbody, to reducing material heat, fusion; Melt and divide the interior temperature of stove at 1450～1700 degree Celsius, reducing material through 1～4 hour, carries out fusion in molten branch stove, slag iron separates.
Preferably, in the said step c), furnace head was installed three gas guns in said molten minute; At said molten minute stove afterbody at least one gas gun is installed, the muzzle of all gas guns is all towards molten blanking place that divides the stove afterbody, to reducing material heat, fusion.
Preferably, also comprise the steps: e) the molten high-temperature gas that divides in the stove, get into rotary kiln through enclosed passage, discharge from the exhanst gas outlet of rotary kiln afterbody; The flue gas that this is discharged out obtains hot steam behind waste heat boiler, the gravitational dust collection chamber bottom waste heat boiler obtains alkali and sodium salt (or sylvite); Again through water curtain dedusting alkali absorption tower; Further absorb waste gas such as sulfur in smoke, fluorine, arsenic; Make it to be dissolved in alkali and generate water-soluble sodium salt (or sylvite), promptly generate the mixing liquid that comprises S-WAT (potassium), Sodium Fluoride (potassium), Sodium Silicofluoride 98min (potassium), sodium arseniate (potassium) and yellow soda ash (potassium).
Preferably, in the said step a), ilmenite, chromium slag mix according to weight ratio at 1: 1; The weight of coal be ilmenite and chromium slag mixture gross weight 30%.
Preferably, in the said step a), ilmenite, chromium slag mix according to weight ratio at 1: 1.5; The weight of coal be ilmenite and chromium slag mixture gross weight 40%.
Preferably, in the said step c), melt and divide the interior temperature of stove at 1500 degree Celsius, reducing material through 4 hours, carries out fusion in molten branch stove, slag iron separates.
Preferably, in the said step c), melt and divide the interior temperature of stove at 1550 degree Celsius, reducing material through 4 hours, carries out fusion in molten branch stove, slag iron separates.
Preferably, in the said step c), melt and divide the interior temperature of stove at 1600 degree Celsius, reducing material through 3 hours, carries out fusion in molten branch stove, slag iron separates.
Compared with prior art; The invention has the beneficial effects as follows: in the reduction reaction of ilmenite, chromium slag and carbon; Because the chromium slag contains the sodium/potash more than 10%; But also contain a spot of fluorochemical, and make ilmenite under lower temperature, just can decompose, be reduced to fe and multivalence titanium oxide.Sodium/potash wherein, fluorochemical have played the catalysis fluxing action in reaction, make that the isolating speed of ferrotianium is fast and reaction is thorough, also make objectionable impurities sodium/potash, fluorochemical in the chromium slag obtain fully, effectively utilize.Simultaneously, sodium/potash, fluorochemical evaporate with the form of gas, recycle through cooling; Iron obtains fe through the molten stove that divides in the heating molten steel outlet, and the yield of iron can be up to more than 99%; Light metal oxide compounds such as aluminium, titanium, silicon, calcium, magnesium obtain from high alumina titanium grog outlet, through shrend, grinding, acidleach go out, operation such as solid-liquid separation obtains aluminum oxide, titanium oxide, quicklime (silicon, magnesium) etc.This just makes the objectionable impurities as industrial residue---the chromium slag, become indispensable industrial raw material, and turn bane into boon, realized no slag production technique.
Description of drawings
Fig. 1 is the structural representation of the device of embodiment of the present invention.
Be labeled as among the figure:
1, rotary kiln; 11, exhanst gas outlet; 12, waste heat boiler; 13, water curtain dedusting alkali absorption tower; 2, the molten stove that divides; 21, heating molten steel outlet; 22, high alumina titanium grog outlet; 23, gas gun; 3, watch-quench tank; 4, enclosed passage.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention done further describing:
The used chromium slag of the present invention is the basic chromium slag, in the prior art promptly, and the waste residue that produces when producing sodium dichromate 99 or SRM 935a; Said high alumina titanium grog is to contain light metal hopcalites such as aluminum oxide, silicon-dioxide, quicklime, titanium oxide, Natural manganese dioxide; Said enclosed passage is built into by refractory materials.
Referring to Fig. 1, the device that is used for embodiment of the present invention is described.Need to prove that embodiment of the present invention is not limited to the device of Fig. 1.
During installation, rotary kiln 1, molten stove 2, the residing position of watch-quench tank 3 threes divided reduce successively, and their each own heads (or bottom) are all low with respect to the height of its afterbody (or top), that is: the head of rotary kiln 1 is lower slightly than its afterbody; The molten afterbody of stove 2 that divides is lower than the head of rotary kiln 1, but is higher than the molten head that divides stove 2; The top of watch-quench tank 3 is lower than the molten head that divides stove 2, but is higher than the bottom of watch-quench tank 3.
As shown in Figure 1, the device of embodiment of the present invention process method comprises rotary kiln 1, the molten stove 2 that divides, and enclosed passage 4 is communicated with said molten minute stove 2 afterbodys with said rotary kiln 1 head; Said molten minute stove 2 head downsides are provided with heating molten steel outlet 21, and said molten minute stove 2 head upsides are provided with high alumina titanium grog outlet 22; Said heating molten steel outlet 21 is lower than said high alumina titanium grog outlet 22; Export above in the of 22 at said molten minute stove 2 head, said high alumina titanium grog, three gas guns 23 are installed, the muzzle of said gas gun 23 was towards said molten minute stove 2 afterbodys; Be provided with three gas guns 23 at said molten minute stove 2 afterbodys, the muzzle of said gas gun 23 is all towards blanking place of said molten minute stove 2 afterbodys; Export below 22 at said molten minute stove 2 head, said high alumina, be provided with watch-quench tank 3; Said rotary kiln 1 afterbody is provided with exhanst gas outlet 11, and the exhanst gas outlet 11 of said rotary kiln 1 is communicated with water curtain dedusting alkali absorption tower 13 through waste heat boiler 12.
Embodiment one
As shown in Figure 1, the no slag production technique of ilmenite comprises the steps:
A) get ilmenite, chromium slag at 1: 0.5 according to weight ratio, mix; Get coal according to 20% of the gross weight of ilmenite and chromium slag mixture, they are ground, mix, process mixed raw material;
B) above-mentioned mixed raw material is joined in the rotary kiln 1, afterbody rises to 1460 degree to the temperature of head from 800 degree Celsius gradually in the control rotary kiln 1; Through 2 hours oven dry, prereduction, generate the reducing material that is the semi-melting state;
C), enter into molten the branch in the stove 2 through enclosed passage 4 with the discharge port of above-mentioned reducing material by rotary kiln 1; Head at said molten minute stove 2 is installed three gas guns 23, and the muzzle of gas gun 23 all divides stove 2 afterbodys towards molten, to reducing material heat, fusion; Afterbody at said molten minute stove 2 is installed three gas guns 23, and the muzzle of gas gun 23 is all towards molten blanking place that divides stove 2 afterbodys, to reducing material heat, fusion; Melt and divide stove 2 interior temperature at 1450 degree Celsius, reducing material through 4 hours, carries out fusion in molten branch stove 2, slag iron separates; The high alumina titanium grog on upper strata is discharged by high alumina titanium grog outlet 22, and the heating molten steel of lower floor is by heating molten steel outlet 21;
D) the high alumina titanium grog of high alumina titanium grog outlet 22 discharges gets into shrend in the watch-quench tank 3; Common process such as warp grinds, acidleach goes out obtain light metal oxide compounds such as solid silicon, calcium, magnesium, aluminium, titanium;
E) moltenly divide the high-temperature gases in the stove 2 to get into rotary kilns 1 through enclosed passage 4, the flue gas from the exhanst gas outlet 11 of rotary kiln 1 afterbody gives off obtains hot steam behind waste heat boiler 12, obtains alkali and sodium salt by the gravitational dust collection chamber of waste heat boiler 12 bottoms; Again via water curtain dedusting alkali absorption tower 13; Further absorb waste gas such as sulfur in smoke, fluorine, arsenic; Make it to be dissolved in alkali and generate water-soluble sodium salt (or sylvite), promptly generate the mixing liquid that comprises S-WAT (potassium), Sodium Fluoride (potassium), Sodium Silicofluoride 98min (potassium), sodium arseniate (potassium) and yellow soda ash (potassium).
Embodiment two
Referring to Fig. 1, the no slag production technique of ilmenite comprises the steps:
A) get ilmenite, chromium slag at 1: 1 according to weight ratio, mix; Get coal according to 30% of the gross weight of ilmenite and chromium slag mixture, they are ground, mix, process mixed raw material;
B) above-mentioned mixed raw material is joined in the rotary kiln 1, the temperature in the rotary kiln 1 from the afterbody to the head edges up to 1460 degree from 800 degree Celsius; Through 5 hours oven dry, prereduction, generate the reducing material that is the semi-melting state;
C), enter into molten the branch in the stove 2 through enclosed passage 4 with the discharge port of above-mentioned reducing material by rotary kiln 1; Head at said molten minute stove 2 is installed three gas guns 23, and the muzzle of gas gun 23 all divides stove 2 afterbodys towards molten, to reducing material heat, fusion; Afterbody at said molten minute stove 2 is installed three gas guns 23, and the muzzle of gas gun 23 is all towards molten blanking place that divides stove 2 afterbodys, to reducing material heat, fusion; Melt and divide stove 2 interior temperature at 1500 degree Celsius, reducing material through 3 hours, carries out fusion in molten branch stove 2, slag iron separates; The high alumina titanium grog on upper strata is discharged by high alumina titanium grog outlet 22, and the heating molten steel of lower floor is flowed out by heating molten steel outlet 21;
D) the high alumina titanium grog of high alumina titanium grog outlet 22 discharges gets into shrend in the watch-quench tank 3; Common process such as warp grinds, acidleach goes out obtain light metal oxide compounds such as solid silicon, calcium, magnesium, aluminium, titanium;
E) moltenly divide the high-temperature gases in the stove 2 to get into rotary kilns 1 through enclosed passage 4, the flue gas from the exhanst gas outlet 11 of rotary kiln 1 afterbody gives off obtains hot steam behind waste heat boiler 12, obtains alkali and sodium salt by the gravitational dust collection chamber of waste heat boiler 12 bottoms; Absorb waste gas such as sulfur in smoke, fluorine, arsenic via water curtain dedusting alkali absorption tower 13 again; Make it to be dissolved in alkali and generate water-soluble sodium salt (or sylvite), promptly generate the mixing liquid that comprises S-WAT (potassium), Sodium Fluoride (potassium), Sodium Silicofluoride 98min (potassium), sodium arseniate (potassium) and yellow soda ash (potassium).
Embodiment three
Referring to Fig. 1, the no slag production technique of ilmenite comprises the steps:
A) get ilmenite, chromium slag at 1: 1.5 according to weight ratio, mix; Get coal according to 35% of the gross weight of ilmenite and chromium slag mixture, they are ground, mix, process mixed raw material;
B) above-mentioned mixed raw material is joined in the rotary kiln 1, the temperature in the rotary kiln 1 from the afterbody to the head edges up to 1460 degree from 800 degree Celsius; Through 7 hours oven dry, prereduction, generate the reducing material that is the semi-melting state;
C), enter into molten the branch in the stove 2 through enclosed passage 4 with the discharge port of above-mentioned reducing material by rotary kiln 1; Head at said molten minute stove 2 is installed three gas guns 23, and the muzzle of gas gun 23 all divides stove 2 afterbodys towards molten, to reducing material heat, fusion; Afterbody at said molten minute stove 2 is installed three gas guns 23, and the muzzle of gas gun 23 is all towards molten blanking place that divides stove 2 afterbodys, to reducing material heat, fusion; Melt and divide stove 2 interior temperature at 1600 degree Celsius, reducing material through 2 hours, carries out fusion in molten branch stove 2, slag iron separates; The high alumina on upper strata is discharged by high alumina outlet 22, and the heating molten steel of lower floor is flowed out by heating molten steel outlet 21;
D) the high alumina titanium grog of high alumina titanium grog outlet 22 discharges gets into shrend in the watch-quench tank 3; Common process such as warp grinds, acidleach goes out obtain light metal oxide compounds such as solid silicon, calcium, magnesium, aluminium, titanium;
E) moltenly divide the high-temperature gases in the stove 2 to get into rotary kilns 1 through enclosed passage 4, the flue gas from the exhanst gas outlet 11 of rotary kiln 1 afterbody gives off obtains hot steam behind waste heat boiler 12, obtains alkali and sodium salt by the gravitational dust collection chamber of waste heat boiler 12 bottoms; Again via water curtain dedusting alkali absorption tower 13; Further absorb waste gas such as sulfur in smoke, fluorine, arsenic; Make it to be dissolved in alkali and generate water-soluble sodium salt (or sylvite), promptly generate the mixing liquid that comprises S-WAT (potassium), Sodium Fluoride (potassium), Sodium Silicofluoride 98min (potassium), sodium arseniate (potassium) and yellow soda ash (potassium).
Embodiment four
Referring to Fig. 1, the no slag production technique of ilmenite comprises the steps:
A) get ilmenite, chromium slag at 1: 2 according to weight ratio, mix; Get coal according to 40% of the gross weight of ilmenite and chromium slag mixture, they are ground, mix, process mixed raw material;
B) above-mentioned mixed raw material is joined in the rotary kiln 1, the temperature in the rotary kiln 1 from the afterbody to the head edges up to 1460 degree from 800 degree Celsius; Through 10 hours oven dry, prereduction, generate the reducing material that is the semi-melting state;
C), enter into molten the branch in the stove 2 through enclosed passage 4 with the discharge port of above-mentioned reducing material by rotary kiln 1; Head at said molten minute stove 2 is installed three gas guns 23, and the muzzle of gas gun 23 all divides stove 2 afterbodys towards molten, to reducing material heat, fusion; Afterbody at said molten minute stove 2 is installed three gas guns 23, and the muzzle of gas gun 23 is all towards molten blanking place that divides stove 2 afterbodys, to reducing material heat, fusion; Melt and divide stove 2 interior temperature at 1700 degree Celsius, reducing material through 1 hour, carries out fusion in molten branch stove 2, slag iron separates; The high alumina titanium grog on upper strata is discharged by high alumina titanium grog outlet 22, and the heating molten steel of lower floor is flowed out by heating molten steel outlet 21;
D) the high alumina titanium grog of high alumina titanium grog outlet 22 discharges gets into shrend in the watch-quench tank 3; Common process such as warp grinds, acidleach goes out obtain light metal oxide compounds such as solid silicon, calcium, magnesium, aluminium, titanium;
E) moltenly divide the high-temperature gases in the stove 2 to get into rotary kilns 1 through enclosed passage 4, the flue gas from the exhanst gas outlet 11 of rotary kiln 1 afterbody gives off obtains hot steam behind waste heat boiler 12, obtains alkali and sodium salt by the gravitational dust collection chamber of waste heat boiler 12 bottoms; Absorb waste gas such as sulfur in smoke, fluorine, arsenic via water curtain dedusting alkali absorption tower 13 again; Make it to be dissolved in alkali and generate water-soluble sodium salt (or sylvite), promptly generate the mixing liquid that comprises S-WAT (potassium), Sodium Fluoride (potassium), Sodium Silicofluoride 98min (potassium), sodium arseniate (potassium) and yellow soda ash (potassium).
Embodiment five
Referring to Fig. 1, the no slag production technique of ilmenite comprises the steps:
A) get ilmenite, chromium slag at 1: 2.5 according to weight ratio, mix; Get coal according to 50% of the gross weight of ilmenite and chromium slag mixture, they are ground, mix, process mixed raw material;
B) above-mentioned mixed raw material is joined in the rotary kiln 1, the temperature in the rotary kiln 1 from the afterbody to the head edges up to 1460 degree from 800 degree Celsius; Through 10 hours oven dry, prereduction, generate the reducing material that is the semi-melting state;
C), enter into molten the branch in the stove 2 through enclosed passage 4 with the discharge port of above-mentioned reducing material by rotary kiln 1; Head at said molten minute stove 2 is installed three gas guns 23, and the muzzle of gas gun 23 all divides stove 2 afterbodys towards molten, to reducing material heat, fusion; Afterbody at said molten minute stove 2 is installed three gas guns 23, and the muzzle of gas gun 23 is all towards molten blanking place that divides stove 2 afterbodys, to reducing material heat, fusion; Melt and divide stove 2 interior temperature at 1700 degree Celsius, reducing material through 1 hour, carries out fusion in molten branch stove 2, slag iron separates; The high alumina titanium grog on upper strata is discharged by high alumina titanium grog outlet 22, and the heating molten steel of lower floor is flowed out by heating molten steel outlet 21;
D) the high alumina titanium grog of high alumina titanium grog outlet 22 discharges gets into watch-quench tank 3, and solid-liquid separation obtains solid silicon, calcium, magnesium, aluminium, titanium light metal oxide compound;
E) moltenly divide the high-temperature gases in the stove 2 to get into rotary kilns 1 through enclosed passage 4, the flue gas from the exhanst gas outlet 11 of rotary kiln 1 afterbody gives off obtains hot steam behind waste heat boiler 12, obtains alkali and sodium salt by the gravitational dust collection chamber of waste heat boiler 12 bottoms; Absorb waste gas such as sulfur in smoke, fluorine, arsenic via water curtain dedusting alkali absorption tower 13 again; Make it to be dissolved in alkali and generate water-soluble sodium salt (or sylvite), promptly generate the mixing liquid that comprises S-WAT (potassium), Sodium Fluoride (potassium), Sodium Silicofluoride 98min (potassium), sodium arseniate (potassium) and yellow soda ash (potassium).
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But everyly do not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and remodeling that above embodiment did, still belong to the protection domain of technical scheme of the present invention according to technical spirit of the present invention.
Claims (11)
1. the no slag production technique of ilmenite is characterized in that: comprise the steps:
A) according to a certain percentage ilmenite, chromium slag, coal are processed mixed raw material;
B) above-mentioned mixed raw material is joined in the rotary kiln,, generate the reducing material that is the semi-melting state through oven dry, prereduction;
C) above-mentioned reducing material is joined molten the branch in the stove, carry out fusion, the separation of slag iron; The high alumina titanium grog on upper strata is discharged by the outlet of high alumina titanium grog, and the heating molten steel of lower floor is flowed out by the heating molten steel outlet;
D) the high alumina titanium grog of high alumina titanium grog outlet discharge gets in the watch-quench tank; Through shrend, grinding, acidleach go out, and obtain solid silicon, calcium, magnesium, aluminium, titanium light metal oxide compound.
2. the no slag production technique of ilmenite according to claim 1 is characterized in that: in the said step a), ilmenite, chromium slag mix according to weight ratio 1: 0.5～2.5; The weight of coal be ilmenite and chromium slag mixture gross weight 20%～50%.
In the said step b), rotary kiln temperature is 800～1460 degree Celsius; Mixed raw material is dried in rotary kiln, the time of prereduction is 2～10 hours;
In the said step c), above-mentioned reducing material enters into molten the branch in the stove by rotary kiln through enclosed passage, through 1～4 hour, carries out fusion, the separation of slag iron; The high alumina titanium grog on upper strata is discharged by the outlet of high alumina titanium grog, and the heating molten steel of lower floor is flowed out by the heating molten steel outlet;
In the said step d), the high alumina titanium grog that the outlet of high alumina titanium grog is discharged gets in the watch-quench tank; Through solid-liquid separation, obtain solid silicon, calcium, magnesium, aluminium, titanium light metal oxide compound.
3. the no slag production technique of ilmenite according to claim 2 is characterized in that: in the said step b), the temperature in the rotary kiln from the afterbody to the head edges up to 1460 degree from 800 degree Celsius.
4. the no slag production technique of ilmenite according to claim 3 is characterized in that: in the said step c), furnace head was installed at least one gas gun in said molten minute, and the muzzle of gas gun is towards said molten minute stove afterbody, to reducing material heat, fusion; Melt and divide the interior temperature of stove at 1450～1700 degree Celsius, reducing material through 1～4 hour, carries out fusion in molten branch stove, slag iron separates.
5. the no slag production technique of ilmenite according to claim 4 is characterized in that: in the said step c), furnace head was installed three gas guns in said molten minute; At said molten minute stove afterbody at least one gas gun is installed, the muzzle of all gas guns is all towards molten blanking place that divides the stove afterbody, to reducing material heat, fusion.
6. according to the no slag production technique of the arbitrary described ilmenite of claim 1 to 5, it is characterized in that: also comprise the steps: e) melt and divide the interior high-temperature gas of stove to get into rotary kiln through enclosed passage, discharge from the exhanst gas outlet of rotary kiln afterbody; The flue gas that this is discharged out obtains hot steam behind waste heat boiler, the gravitational dust collection chamber bottom waste heat boiler obtains alkali and sodium salt (or sylvite); Again through water curtain dedusting alkali absorption tower; Further absorb waste gas such as sulfur in smoke, fluorine, arsenic; Make it to be dissolved in alkali and generate water-soluble sodium salt (or sylvite), promptly generate the mixing liquid that comprises S-WAT (potassium), Sodium Fluoride (potassium), Sodium Silicofluoride 98min (potassium), sodium arseniate (potassium) and yellow soda ash (potassium).
7. the no slag production technique of ilmenite according to claim 6 is characterized in that: in the said step a), ilmenite, chromium slag mix according to weight ratio at 1: 1; The weight of coal be ilmenite and chromium slag mixture gross weight 30%.
8. the no slag production technique of ilmenite according to claim 6 is characterized in that: in the said step a), ilmenite, chromium slag mix according to weight ratio at 1: 1.5; The weight of coal be ilmenite and chromium slag mixture gross weight 40%.
9. the no slag production technique of ilmenite according to claim 7 is characterized in that: in the said step c), the molten temperature of dividing in the stove is at 1500 degree Celsius, and reducing material divides in the stove through 4 hours molten, carries out fusion, slag iron separates.
10. the no slag production technique of ilmenite according to claim 8 is characterized in that: in the said step c), the molten temperature of dividing in the stove is at 1550 degree Celsius, and reducing material divides in the stove through 4 hours molten, carries out fusion, slag iron separates.
11. the no slag production technique of ilmenite according to claim 10 is characterized in that: in the said step c), melt and divide the interior temperature of stove at 1600 degree Celsius, reducing material through 3 hours, carries out fusion in molten branch stove, slag iron separates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102796948A CN102766716A (en) | 2012-07-27 | 2012-07-27 | Slag-free production process of ilmenite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102796948A CN102766716A (en) | 2012-07-27 | 2012-07-27 | Slag-free production process of ilmenite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102766716A true CN102766716A (en) | 2012-11-07 |
Family
ID=47094282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102796948A Pending CN102766716A (en) | 2012-07-27 | 2012-07-27 | Slag-free production process of ilmenite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102766716A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805903A (en) * | 2003-06-16 | 2006-07-19 | 利兹大学 | Extraction process for reactive metal oxides |
| CN102344982A (en) * | 2011-09-04 | 2012-02-08 | 胡长春 | Process for preparing hot molten iron and byproducts by utilizing red mud |
| CN102515219A (en) * | 2011-11-05 | 2012-06-27 | 胡长春 | Slag-free production process for extracting aluminum oxide and reduced iron by using bauxite one-step method |
-
2012
- 2012-07-27 CN CN2012102796948A patent/CN102766716A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805903A (en) * | 2003-06-16 | 2006-07-19 | 利兹大学 | Extraction process for reactive metal oxides |
| CN102344982A (en) * | 2011-09-04 | 2012-02-08 | 胡长春 | Process for preparing hot molten iron and byproducts by utilizing red mud |
| CN102515219A (en) * | 2011-11-05 | 2012-06-27 | 胡长春 | Slag-free production process for extracting aluminum oxide and reduced iron by using bauxite one-step method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3221264B1 (en) | Process and apparatus for manufacture of calcined compounds for the production of calcined products | |
| CN100469907C (en) | Treatment method of zinc-containing electric furnace dust | |
| CN102344982B (en) | Process for preparing hot molten iron and byproducts by utilizing red mud | |
| CN101538634A (en) | Smelting process and device of pure iron | |
| CN102732662A (en) | Slag-free production process using bauxite or red mud | |
| CN108203246A (en) | Utilize the method for molten ash production inorfil generated in coal gasification course | |
| CN103415596A (en) | Method for processing used cathode material containing carbon | |
| CN107091569A (en) | Rotary kiln and the polygenerations systeme that metal hydride is produced using the rotary kiln | |
| CN102634614B (en) | Resourceful treatment method for zinc-containing ironmaking and steelmaking intermediate slag | |
| CN105217589B (en) | The power-economizing method of yellow phosphorus coproduction sylvite, sodium carbonate and aluminum oxide | |
| CN102011011B (en) | Recycling and treating method for low-lead-zinc-content waste residues | |
| CN102766715A (en) | Slag-free production process of ilmenite | |
| CN112429707A (en) | Method and device for producing yellow phosphorus and phosphoric acid by replacing in kiln method preheating material sealing rotary cylinder | |
| CN101644535A (en) | Smelting furnace | |
| CN114524442B (en) | Method for recycling and clean utilization of aluminum ash in grinding station | |
| CN108611458B (en) | Method for treating solid waste by rotary hearth furnace | |
| CN103276195A (en) | Stone coal vanadium ore shaft roasting method and system | |
| CN103397177B (en) | A method for extracting potassium and sodium from iron ore and synchronously preparing ironmaking charge | |
| CN103667564B (en) | Prepare the method for metal simple-substance | |
| CN102344983B (en) | Device for preparing hot molten iron and byproducts by using red mud | |
| CN102766714A (en) | Slag-free combined production process for iron, aluminum and titanium | |
| CN105217588B (en) | Yellow phosphorus coproduction sylvite, aluminum oxide, molecular sieve, the circulation clean production method of slag cements and architectural shape | |
| CN102766716A (en) | Slag-free production process of ilmenite | |
| CN1012579B (en) | Comprehensive utilization of cr dregs by detoxicated melting cr dregs | |
| CN106077546A (en) | A kind of covering slag in steelmaking process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121107 |