CN1284571A - Process and apparatus of direct producing high-grade zinc oxide - Google Patents
Process and apparatus of direct producing high-grade zinc oxide Download PDFInfo
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- CN1284571A CN1284571A CN 00107928 CN00107928A CN1284571A CN 1284571 A CN1284571 A CN 1284571A CN 00107928 CN00107928 CN 00107928 CN 00107928 A CN00107928 A CN 00107928A CN 1284571 A CN1284571 A CN 1284571A
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- zinc oxide
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- zinc
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims description 92
- 239000011787 zinc oxide Substances 0.000 title claims description 46
- 238000000034 method Methods 0.000 title claims description 29
- 239000000843 powder Substances 0.000 claims abstract description 49
- 239000008188 pellet Substances 0.000 claims abstract description 14
- 238000003723 Smelting Methods 0.000 claims abstract description 12
- 239000004744 fabric Substances 0.000 claims abstract description 9
- 230000001590 oxidative effect Effects 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000000779 smoke Substances 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 239000011701 zinc Substances 0.000 claims description 46
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 39
- 229910052725 zinc Inorganic materials 0.000 claims description 38
- 239000002918 waste heat Substances 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 241001062472 Stokellia anisodon Species 0.000 claims description 4
- 239000004071 soot Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract 1
- 235000014692 zinc oxide Nutrition 0.000 description 43
- 238000004519 manufacturing process Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 12
- 239000002245 particle Substances 0.000 description 10
- 239000004576 sand Substances 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 239000012535 impurity Substances 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- 239000003517 fume Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 5
- 235000011941 Tilia x europaea Nutrition 0.000 description 5
- 239000004571 lime Substances 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- WSUTUEIGSOWBJO-UHFFFAOYSA-N dizinc oxygen(2-) Chemical compound [O-2].[O-2].[Zn+2].[Zn+2] WSUTUEIGSOWBJO-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001698 pyrogenic effect Effects 0.000 description 2
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The apparatus consists of furnace stack, oxidizing door, oxidizing chamber, heat maintaining smoke channel, gate, heat maintaining settling chamber, heat maintaining powder pond, afterheat boilet, cooler aluminum pipe, cloth bag chamber, ash eliminating door, cleaning doors, powder discharging door, drawing fan and motor. The furnace stack is one double hearth structure and the two hearths are used in smelting alternately. When pellets are mselted in the furnace, they are covered with one layer of sulfur-fixing agent. Product powder is collected in the heat maintaining powder pond at 770-1100 deg.C.
Description
The invention belongs to field of metallurgy, relate to pyrogenic process and produce zinc oxide, particularly, the present invention relates to produce the method and apparatus of high-grade zinc oxide with direct method.
Pyrogenic process is the method for the present production zinc oxide that generally adopts in the world, and this method is the zinc raw material to be reduced into zinc fume combine with oxygen again, makes zinc oxide.This method is broadly divided into two kinds of indirect method and direct methods.Indirect method is an evaporated metal zinc in a rectifying jar, and with zinc fume and airborne oxygen reaction generation zinc oxide, this method has constant product quality, zinc oxide purity height, the advantage that impurity is few, the first grade zinc oxide content reaches more than 99.7%, but because this method is a raw material with expensive metal zinc ingot, the production cost height.Direct method is produced the zinc oxide outstanding feature and is to use zinc baking sand or other material containing zinc to finish the redox process in same equipment, direct output zinc oxide, avoided using metallic zinc to reduce production cost as raw material, but because impurity is many in the raw material, the volatile impurity of part enters into finished product with the zinc fume oxidation, influence the purity of product, American process zinc oxide first grade zinc oxide content can only reach 99.5%, can not produce 99.7% grade zinc oxide, value of the product is lower than indirect method, and the ratio of first-grade products can only reach 60-70%.
At present in the world particularly China's American process zinc oxide generally adopt dimension to cut the rel method to produce, its technical process is as follows:
1, roasting: zinc ore concentrate high-temperature roasting desulfurization is obtained zinc baking sand;
2, briquetting: with zinc baking sand with go back raw coal under the effect of tackiness agent, be pressed into pellet;
3, redox: smelting palletizing ore deposit in Vickers stove (claiming Furnace for obtaining white zinc again), the zinc fume that is reduced causes in oxidizing chamber and the secondary air oxygen reaction by blower fan and generates zinc oxide, by the cooling system of back segment with receive powder system and captured, obtains zinc oxide.
Common Furnace for obtaining white zinc system is shown in figure one, by body of heater (1), oxidation door (2), oxidizing chamber (3), water-cooled cigarette lane (4), gate (5), settling pocket (6), cooling water tank (7), surface cooler (8,9), aluminum pipe (10), cloth bag chamber (11), soot door (12), cleaning door (13,14,15), powder exit (16), receipts powder pond (17), vacuum fan (18), motor (19) are formed.In addition, for improving UTILIZATION OF VESIDUAL HEAT IN, existing also have some production systems to adopt waste heat boiler to replace settling pocket (6) and cooling water tank (7).This system is periodical operation, and each operational cycle comprises into ground coal, the nodulizing of scoring, takes out operations such as waste gas, smelting, deslagging, and the time is 2.5-3 hour, wherein be 1.5-2 hour tap to tap time, other operating time is 1 hour, and can only smelt the 8-9 stove every day, with 12M
2The zinc white furnace gauge, monthly output is about 200 tons.Product zinc oxide is mainly collected in powder pond (17) and cloth bag chamber (11), and during smelting, receiving powder pond temperature in is about 900 ℃, and temperature out is below 200 ℃, promptly receives powder pond receipts powder and carries out between 200-900 ℃.
The object of the present invention is to provide a kind of direct method that adopts is the production technique of raw material production 99.7% grade zinc oxide with the zinc baking sand, and provide device--the novel Furnace for obtaining white zinc of realizing this technology, can reduce production costs significantly, output is doubled, enhance productivity.Adopt this Furnace for obtaining white zinc to produce other grade zinc oxide, also can improve the product purity and the rate of classification of product.
The present invention carries out following improvement for achieving the above object with American process zinc oxide production method and device: 1. when the smelting palletizing ore deposit, cover one deck sulphur-fixing agent on pellet, reduce major impurity sulphur and enter the receipts powder system; 2. adopt the Furnace for obtaining white zinc device smelting palletizing ore deposit of accompanying drawing 2, after making the reaction of zinc fume and secondary air, without cooling, directly under 770-1100 ℃ high temperature, receive powder in the insulating powder pond, stop the formation of water-soluble salt impurity, improve zinc oxide product purity, the purpose of producing 99.7% grade zinc oxide with the zinc ore direct method thereby reach.
Accompanying drawing 2 is Furnace for obtaining white zinc schematic representation of apparatus of the present invention, and this device is made up of body of heater (20), oxidation door (21), oxidizing chamber (22), temperature keeping smoke lane (23), gate (24), insulation settling pocket (25), insulating powder pond (26), waste heat boiler (27), water cooler (28), aluminum pipe (29), cloth bag chamber (30), soot door (31), cleaning door (32,33,34,37), powder exit (35,36), vacuum fan (38), motor (39).
Accompanying drawing 3 is vertical views of apparatus of the present invention.
This device has following characteristics: 1, adopt the twin furnace header structure: the present invention adopts the twin furnace header structure, and two burner wheel flow operations make receipts powder ponds (26) have high-temperature furnace gas to pass through always.And existing Furnace for obtaining white zinc all is single furnace head structures, and batch operation stops to smelt when carrying out other operation, and gate (5) puts down, and the system of gate (5) back does not have furnace gas to pass through, and temperature can reduce.The twin furnace header structure can reach two purposes, and the one, can guarantee that total system receives the powder temperature and remain on more than 770 ℃ always, the 2nd, can increase the throughput of system, output can increase and is twice, and enhances productivity; 2, the lagging material insulation is all adopted in former water-cooled cigarette lane (4), settling pocket (6) and receipts powder ponds (17), and removed cooling water tank (7) and surface cooler (8,9), receipts powder temperature is remained on more than 770 ℃; 3, waste heat boiler (27) and water cooler (28) are arranged between insulating powder pond (26) and the vacuum fan (38), neither influence high temperature and receive the powder operation, recyclable again used heat reduces flue-gas temperature, make flue gas enter cloth bag chamber (30) below 200 ℃, do not influence cloth bag and receive the powder operation.
Adopt other zinc oxide series product of this explained hereafter, also can improve the rate of classification of product and the direct yield of product, for example with because of the foreign matter content height, the off-specification material calcining that existing Furnace for obtaining white zinc system can not produce stair oxidation zinc (99.5%) is a raw material, produces first grade zinc oxide (99.5%).Further describe the present invention below in conjunction with accompanying drawing 2.
In embodiment of the present invention, complete ground coal with one group in the body of heater (20), the goal nodulizing, and on pellet, spread one deck sulphur-fixing agent, as lime, Wingdale, carbide slag, alkaline materials such as sodium hydroxide, require its particle about 30-50MM, waste gas is taken out in air blast then, when presenting a large amount of blue look flame in the stove, can stop to take out waste gas, close fire door, open induced draft fan (38), mention gate (24), begin formal smelting operation, zinc fume is oxidized to zinc oxide through oxidizing chamber, temperature enters settling pocket (25) by cigarette lane (23) about 1200-1300 ℃, because settling pocket is a void tower, sectional area increases, gas velocity reduces, and according to the gravity principle of gathering dust, coarse particles is in this powder sedimentation, contain more PbO, CuO, the particle of impurity such as Cro is thicker, can be removed by settling pocket.Furnace gas enters insulating powder pond (26) then, and its temperature out remains on more than 770 ℃, and when making powder pond (26) receive powder, temperature is higher than ZnSO
4, ZnSO
3, ZnCO
3Decomposition temperature Deng water-soluble salt impurity, stop water-soluble salt to form, the zinc oxide foreign matter content that powder pond (26) is collected is few, obtain meeting 99.7% grade zinc oxide of GB GB/T3185-92, the furnace gas that comes out in powder pond (26) reduces the temperature to below 200 ℃ through waste heat boiler (27), water cooler (28), enter the back emptying of gathering dust of cloth bag chamber, the zinc oxide quality of cloth bag chamber is lower than powder pond (26) slightly.
In first group of burner smelting process, second group of burner begins into operations such as ground coal, pellet, sulphur-fixing agent, waste discharge gas in the body of heater (20).When first group of burner smelting enters the tail powder during phase, second group of burner mentioned gate (24) and begun to smelt, when second group of burner smelting enters the tail powder during phase, first group of burner begins to carry out the smelting of second stove, alternate cycles is smelted like this, can keep receiving the relatively stable of powder pond (26) temperature, thereby guarantee to receive powder pond (26) zinc oxide product quality.This Furnace for obtaining white zinc every day (24 hours) can be smelted the 16-17 stove, and the existing Furnace for obtaining white zinc of output doubles.
The present invention compares with existing zinc oxide production technique, and have the following advantages: 1, production cost is low, and replacing expensive metallic zinc with zinc baking sand is raw material production 99.7% grade zinc oxide, and cost 30-40% can save material.2, production efficiency height owing to adopt the twin furnace header structure, is alternately smelted, and can improve one times of output.3, utilization rate of waste heat height, because the total system major part is taked the insulation measure, waste heat is concentrated by waste heat boiler (27) and water cooler (28) and is reclaimed, and has improved utilization rate of waste heat.4, the novel Furnace for obtaining white zinc of technology of the present invention and isolated plant also can be used for producing other zinc oxide series product, improves the rate of classification of product and the direct yield of product.For example will be owing to the foreign matter content height, existing Furnace for obtaining white zinc can not be produced the off-specification material zinc baking sand of 99.5% grade zinc oxide as raw material, produces 99.5% grade zinc oxide, and the direct yield of first grade (99.5%) can reach more than 80%.
Embodiment:
Below be 12M
2Novel Furnace for obtaining white zinc is produced the implementation data of zinc oxide; And the zinc oxide monthly output is 400 tons.Embodiment 1:produce 99.7% grade zinc oxide zinc baking sand composition, (%): Zn Pb Cd Cu S 69.06 0.011 0.012 0.26 0.41 pellet compositions, (%): Zn Pb Cu As S 36.52 0.038 0.17 0.07 0.69 technical qualification:cover the thick lime particle of one deck 60MM on pellet; Particle diameter is between 30-50MM; 120 minutes tap to tap time, 1090-850 ℃ of in powder. of receive pond temperature receives powder pond zinc oxide composition (%): the water-soluble salt igloss of ZnO PbO CuO hydrochloric acid insoluble substance 99.72 0.030 0.0001 0.07 0.15 0.003 embodiment 2: produce 99.7% grade zinc oxide zinc calcine composition (%): Zn Pb Cd Cu S 68.83 0.033 0.014 0.21 0.25 pellet compositions (%): Zn Pb Cu As S 36.55 0.027 0.16 0.08 0.52 technical conditions: cover the thick lime particle of one deck 60MM at pellet; Particle diameter is between 30-50MM; 130 minutes durations of heat, receive pond temperature 1030-770 ℃ of of in powder. Receive powder pond zinc oxide composition (%): Zn0 PbO CuO water-soluble salt igloss hydrochloric acid insoluble substance 99.70 0.021 0.0001 0.10 0.19 0.005 embodiment 3:produce 99.7% grade zinc oxide zinc baking sand composition (%): Zn Pb Cd Cu S 67.95 0.035 0.015 0.20 0.39 pellet compositions (%): Zn Pb Cu As S 36.12 0.032 0.17 0.08 0.56 technical qualification:on pellet, cover the thick lime particle of one deck 60MM, particle diameter is between 30-50MM, 125 minutes tap to tap time, receive pond temperature 1080-800 ℃ of of of in powder.Receive powder pond zinc oxide composition (%): ZnO PbO CuO water-soluble salt igloss hydrochloric acid insoluble substance 99.70 0.027 0.0001 0.08 0.17 0.005 embodiment 4:produce 99.5% grade zinc oxide with the off-specification material calcining.Zinc baking sand composition (%): Zn Pb Cd Cu S 63.80 0.35 0.026 0.47 0.58 pellet compositions (%): Zn Pb Cu As S 33.41 0.18 0.31 0.25 0.86 technical qualification:on pellet, cover the thick lime particle of one deck 60MM, particle diameter is between 30-50MM, 120 minutes tap to tap time, receive pond temperature 1080-810 ℃ of of of in powder.Receive powder pond zinc oxide composition (%): ZnO PbO CuO water-soluble salt igloss hydrochloric acid insoluble substance 99.52 0.10 0.005 0.32 0.35 0.018
Claims (4)
1. Furnace for obtaining white zinc device of producing high-grade zinc oxide, by body of heater (20), oxidation door (21), oxidizing chamber (22), temperature keeping smoke lane (23), gate (24), insulation settling pocket (25), insulating powder pond (26), waste heat boiler (27), water cooler (28), aluminum pipe (29), cloth bag chamber (30), soot door (31), cleaning door (32,33,34,37), powder exit (35,36), vacuum fan (38), motor (39) is formed, it is characterized in that adopting temperature keeping smoke lane (23), powder pond (26) is received in insulation settling pocket (25) and insulation, and adopt the twin furnace header structure, two bodies of heater (20) are arranged, two oxidizing chambers (22), two temperature keeping smoke lanes (23), two insulation settling pockets (25) and two gates (24).
2. according to the Furnace for obtaining white zinc device of claim 1, it is characterized in that temperature keeping smoke lane (23), insulation settling pocket (25) and insulation receipts powder ponds (26) are all at its external coating lagging material.
3. according to the Furnace for obtaining white zinc device of claim 1, it is characterized in that waste heat boiler (27) and water cooler (28) are arranged between receipts powder pond (26) and the vacuum fan (38).
4. method of producing high-grade zinc oxide, it is characterized in that using the Furnace for obtaining white zinc device of claim 1, adopt twin furnace header structure wheel flow operation to smelt, cover one deck sulphur-fixing agent when body of heater (20) smelting palletizing ore deposit on pellet, insulating powder pond (26) receive powder under 770-1100 ℃ high temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00107928 CN1127577C (en) | 2000-05-30 | 2000-05-30 | Process and apparatus of direct producing high-grade zinc oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00107928 CN1127577C (en) | 2000-05-30 | 2000-05-30 | Process and apparatus of direct producing high-grade zinc oxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1284571A true CN1284571A (en) | 2001-02-21 |
| CN1127577C CN1127577C (en) | 2003-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00107928 Expired - Fee Related CN1127577C (en) | 2000-05-30 | 2000-05-30 | Process and apparatus of direct producing high-grade zinc oxide |
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| CN (1) | CN1127577C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834819A (en) * | 2013-12-05 | 2014-06-04 | 湖南水口山有色金属集团有限公司 | Method for direct production of high-grade zinc oxide from zinc material containing high chlorine and fluorine |
| CN103861440A (en) * | 2013-12-26 | 2014-06-18 | 张明鑫 | Layer burning furnace desulfurization and denitrification flue gas treatment technology |
| CN104212980A (en) * | 2014-09-01 | 2014-12-17 | 常熟市荣兴化纺有限责任公司 | Zinc oxide collecting device |
| CN104232930A (en) * | 2014-09-01 | 2014-12-24 | 常熟市荣兴化纺有限责任公司 | Air pulse zinc oxide collecting device |
| CN108220621A (en) * | 2018-01-09 | 2018-06-29 | 石家庄市龙力化工有限公司 | A kind of technique of direct method production high-purity zinc oxide |
| CN110592395A (en) * | 2019-10-25 | 2019-12-20 | 赫章领轩环保科技有限公司 | Production line for producing high-grade direct method zinc oxide and technological process thereof |
| CN112391535A (en) * | 2020-10-27 | 2021-02-23 | 山西于斯为盛环保科技有限公司 | Treatment and utilization device and method for recovering zinc oxide from metallurgical zinc-containing ash by suspension smelting reduction |
| CN114309020A (en) * | 2022-01-04 | 2022-04-12 | 重庆赛迪热工环保工程技术有限公司 | Pyrogenic time-sharing treatment method for metallurgical zinc-containing dust sludge |
| CN117663743A (en) * | 2023-12-14 | 2024-03-08 | 高邑县永昌锌业有限责任公司 | Zinc oxide smelting furnace and smelting method |
-
2000
- 2000-05-30 CN CN 00107928 patent/CN1127577C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834819A (en) * | 2013-12-05 | 2014-06-04 | 湖南水口山有色金属集团有限公司 | Method for direct production of high-grade zinc oxide from zinc material containing high chlorine and fluorine |
| CN103834819B (en) * | 2013-12-05 | 2016-04-27 | 湖南水口山有色金属集团有限公司 | A kind of method containing the zinc material direct producing high-grade zinc oxide of high chlorine and fluorine |
| CN103861440A (en) * | 2013-12-26 | 2014-06-18 | 张明鑫 | Layer burning furnace desulfurization and denitrification flue gas treatment technology |
| CN103861440B (en) * | 2013-12-26 | 2016-01-20 | 张明鑫 | Layer burning stove desulfurization removing nitric flue gas treating process |
| CN104212980A (en) * | 2014-09-01 | 2014-12-17 | 常熟市荣兴化纺有限责任公司 | Zinc oxide collecting device |
| CN104232930A (en) * | 2014-09-01 | 2014-12-24 | 常熟市荣兴化纺有限责任公司 | Air pulse zinc oxide collecting device |
| CN108220621A (en) * | 2018-01-09 | 2018-06-29 | 石家庄市龙力化工有限公司 | A kind of technique of direct method production high-purity zinc oxide |
| CN110592395A (en) * | 2019-10-25 | 2019-12-20 | 赫章领轩环保科技有限公司 | Production line for producing high-grade direct method zinc oxide and technological process thereof |
| CN112391535A (en) * | 2020-10-27 | 2021-02-23 | 山西于斯为盛环保科技有限公司 | Treatment and utilization device and method for recovering zinc oxide from metallurgical zinc-containing ash by suspension smelting reduction |
| CN112391535B (en) * | 2020-10-27 | 2025-12-16 | 山西于斯为盛环保科技有限公司 | Treatment and utilization device and method for recycling zinc oxide by suspension smelting reduction of metallurgical zinc-containing ash |
| CN114309020A (en) * | 2022-01-04 | 2022-04-12 | 重庆赛迪热工环保工程技术有限公司 | Pyrogenic time-sharing treatment method for metallurgical zinc-containing dust sludge |
| CN114309020B (en) * | 2022-01-04 | 2023-06-13 | 重庆赛迪热工环保工程技术有限公司 | Pyrometallurgical zinc-containing dust sludge pyrogenic time-sharing disposal method |
| CN117663743A (en) * | 2023-12-14 | 2024-03-08 | 高邑县永昌锌业有限责任公司 | Zinc oxide smelting furnace and smelting method |
| CN117663743B (en) * | 2023-12-14 | 2024-06-21 | 高邑县永昌锌业有限责任公司 | Zinc oxide smelting furnace and smelting method |
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| Publication number | Publication date |
|---|---|
| CN1127577C (en) | 2003-11-12 |
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