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WO2018194397A1 - Procédé de fusion d'ilménite à l'aide de boue rouge - Google Patents

Procédé de fusion d'ilménite à l'aide de boue rouge Download PDF

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Publication number
WO2018194397A1
WO2018194397A1 PCT/KR2018/004563 KR2018004563W WO2018194397A1 WO 2018194397 A1 WO2018194397 A1 WO 2018194397A1 KR 2018004563 W KR2018004563 W KR 2018004563W WO 2018194397 A1 WO2018194397 A1 WO 2018194397A1
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WIPO (PCT)
Prior art keywords
red mud
ilmenite
smelting
titanium dioxide
mixture
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.)
Ceased
Application number
PCT/KR2018/004563
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English (en)
Korean (ko)
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WO2018194397A4 (fr
Inventor
박현식
김민석
전호석
김영재
정경우
하민철
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea Institute of Geoscience and Mineral Resources KIGAM
Original Assignee
Korea Institute of Geoscience and Mineral Resources KIGAM
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from KR1020170050662A external-priority patent/KR101790128B1/ko
Priority claimed from KR1020180041532A external-priority patent/KR101900672B1/ko
Application filed by Korea Institute of Geoscience and Mineral Resources KIGAM filed Critical Korea Institute of Geoscience and Mineral Resources KIGAM
Priority to AU2018256247A priority Critical patent/AU2018256247B2/en
Publication of WO2018194397A1 publication Critical patent/WO2018194397A1/fr
Publication of WO2018194397A4 publication Critical patent/WO2018194397A4/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/04—Oxides; Hydroxides
    • C01G23/047—Titanium dioxide

Definitions

  • the present invention relates to a method of smelting ilmenite, which is an ore of titanium, and more particularly to a method of smelting ilmenite, which can obtain high quality titanium dioxide and recover and utilize process by-products.
  • the titanium raw material industry which produces titanium, is mainly composed of titanium ore from Australia, South Africa, and India, or from hard rock in Canada and Norway. Australia is the world's largest producer of heavy ore concentrates, with more than half of the titanium titan being produced from artificial rutile and used as pigment raw material.
  • Titanium pyrite can be used directly in the production of titanium dioxide pigments, but most of the titanium pyrite to improve the quality by producing a titanium dioxide slag or synthetic rutile (synthetic rutile).
  • rutile Another important raw material is natural rutile, which is produced as a by-product of titanium iron in Australia, the United States and South Africa, and as the main mineral in Sierra Leone.
  • Titanium (FeO-TiO 2 ) generally has a TiO 2 content of 45-65% by weight. Advances in chemical and dry smelting technology can remove iron to improve the TiO 2 content in artificial rutile by 90-96%.
  • the commercial process for making artificial rutile from titanium iron is the Becher process.
  • titanium iron is coated with iron using sub-bituminous coal as fuel and reducing agent at a high temperature of 1,300 ° C.
  • the reaction proceeds according to Scheme 1 below.
  • Iron is aerated by blowing air in ammonium chloride solution at temperatures up to 80 ° C.
  • Hydrocyclone is used to separate the standard grade artificial rutile (TiO 2 , 90%) from the hydrous iron oxide that is concentrated and pumped to the reservoir, and a general reaction is performed according to the following Scheme 2.
  • red mud is a workplace waste generated from the bauxite refining process, which is composed of strong alkali with a water content of 40-55% and a pH of 11-13.
  • the present invention relates to a smelting method of ilmenite using red mud, and can be recovered by high purity titanium dioxide by smelting ilmenite using red mud, a waste that is difficult to use as a flux or a raw material. It also provides a way to smelt ilmenite using red mud, which is difficult to treat as waste.
  • the present invention is to form a mixture by mixing ilmenite concentrate and red mud, adding a carbon source to the mixture and heating to reduce iron in the mixture, magnetic force Separating the reduced iron through the screening, aeration and acid-leaching the residue, to remove the iron in the residue and to recover the titanium dioxide dioxide using ilmenite Provides titanium smelting method.
  • the present invention comprises the steps of (a) mixing ilmenite concentrate and red mud to form a mixture; (b) adding a carbon source to the mixture and heating to reduce iron in the mixture to form a melt droplet; (c) physically separating the melt to remove iron and recovering titanium dioxide slag; (d) recovering alumina (Al 2 O 3 ) by introducing the titanium dioxide slag into a Bayer process; And (e) acid-leaching the titanium dioxide slag from which the alumina is separated to remove silica (SiO 2 ).
  • red mud generated in the aluminum oxide smelting process which is very difficult to treat, can be treated together in the smelting process of ilmenite by using as a flux or a raw material.
  • iron which is an impurity contained in ilmenite, is not reduced and removed at a high temperature, but is reduced with red mud to form a molten droplet, thereby physically easily sorting and separating the titanium dioxide slag, which can be greatly increased. .
  • the aeration step to recover high-quality titanium dioxide by minimizing the content of iron as impurities in the titanium dioxide slag recovered by separating and recovering the reduced iron through the reduction process to control the heating temperature by adding a carbon source and magnetic screening It is not necessary and can drastically reduce the cost of the ilmenite smelting process.
  • FIG. 1 is a process flowchart of the ilmenite smelting method using red mud according to an embodiment of the present invention.
  • FIG. 2 is a process flowchart of the ilmenite smelting method using red mud according to another embodiment of the present invention.
  • Figure 3 is a photograph of the starting material ilmenite, red mud and bituminous coal samples in the ilmenite smelting method using red mud according to an embodiment of the present invention.
  • Figure 4 is a photograph of the iron reduced by heating in the smelting method of ilmenite utilizing red mud according to an embodiment of the present invention as a droplet.
  • FIG. 5 is a schematic diagram showing the configuration of a ilmenite smelting method using red mud according to another embodiment of the present invention.
  • FIG. 6 is a photograph of a high temperature and high pressure leaching apparatus.
  • FIG. 7 is a graph showing alumina and silica contents according to caustic soda concentration in the Bayer process step in the ilmenite smelting method using red mud according to another embodiment of the present invention.
  • FIG. 5 is a schematic diagram showing the configuration of a ilmenite smelting method using red mud according to another embodiment of the present invention.
  • Powdered ilmenite and concentrate were uniformly mixed through a ball mill and then briquettes using a pelletizer with a maximum pressure of 5 tons.
  • Bituminous coal was added to the briquettes and reduced by heating at 1700 ° C. for 15 minutes in a rotary furnace.
  • the melt droplets were separated using a magnetic separator.
  • the melt was removed to recover the titanium dioxide slag.
  • FIG. 6 is a photograph of a high temperature and high pressure leaching apparatus.
  • caustic soda was filled in the high temperature and high pressure leaching apparatus with titanium dioxide slag from which the melt was removed, and leached at 200 ° C. and 20 bar for 1 hour.
  • the leached components were analyzed to determine the content of alumina and silica in the titanium dioxide slag.
  • Acid leaching was carried out by adding 30% sulfuric acid to the titanium dioxide slag from which alumina was removed.
  • FIG. 1 is a process flowchart of the ilmenite smelting method using red mud according to an embodiment of the present invention.
  • the method of smelting ilmenite using red mud is performed by mixing ilmenite concentrate and red mud to form a mixture (S100), in the mixture. Adding a carbon source and heating to reduce iron in the mixture (S200), separating the reduced iron through magnetic screening (S300), and aeration and acid-leaching the residue, The step of recovering titanium dioxide by removing iron in the residue (S400).
  • the ilmenite concentrate may be an increase in purity by beneficiating ilmenite ore.
  • the ilmenite may contain 17 to 50 wt% of concentrate titanium dioxide (TiO 2 ).
  • the grade of ilmenite concentrate is generally 45% to 50%, but the higher the grade of titanium, the higher the process cost.
  • the ilmenite concentrate may contain 35 to 65% by weight of titanium dioxide and residual iron oxide (FeO x ).
  • the oxidized iron may be reduced and separated and recovered in the magnetic screening step.
  • the red mud may be waste generated in the aluminum oxide smelting process.
  • the red mud is difficult to dispose as it is very high pH, it can be recovered by separating the iron and titanium dioxide contained in the red mud when mixed and reduced with ilmenite concentrate.
  • the red mud may contain 5 to 10 wt% of titanium dioxide (TiO 2 ).
  • the titanium dioxide contained in the red mud can be recovered together with the titanium dioxide contained in the ilmenite concentrate.
  • the red mud may contain 30 to 40 wt% of residual iron oxide (Fe 2 O 3 ) in addition to titanium dioxide.
  • Iron oxide contained in the red mud may be hematite.
  • Hematite in the red mud can be reduced and physically separated together with the iron oxide component of the ilmenite concentrate.
  • the red mud may be added in an amount of 10 to 200 parts by weight based on 100 parts by weight of the total amount of ilmenite concentrate.
  • Iron oxide contained in the red mud is first produced as reduced iron because it has a very fast reduction rate compared to ilmenite.
  • the resulting reduced iron is carburized by carbon and has a low melting point and acts as a strong reducing agent itself to facilitate reduction of ilmenite and greatly increase the generation of reduced iron molten droplets (described below).
  • the red mud When the red mud is added less than 10 parts by weight, the purity of the titanium dioxide to be separated and recovered is lowered, if it exceeds 200 parts by weight may cause a problem that the efficiency of the process of reducing iron by heating is very low.
  • the mixture may be pressed into a pellet.
  • the efficiency of the subsequent heating and reducing step may be greatly increased, and the convenience of process operation may be greatly increased in a reduction process using a rotary furnace or a sintering furnace.
  • the carbon source may be any one selected from bituminous coal consisting of peat, lignite and bituminous coal.
  • the carbon source may increase the reaction temperature in the step of heating and reducing the mixture, and the reduced iron reduced by carbon itself may become a very strong reducing agent and greatly increase the efficiency of the reduction step.
  • the carbon source may be added in 10 to 100 parts by weight based on 100 parts by weight of the mixture.
  • the carbon source is set to the maximum within the above range, the maximum reduction rate can be expected, and in the case of unreacted residual carbon, there is an advantage in that it can be recovered and reused.
  • a carbon source can be added to the mixture and heated to 1350-1500 ° C. for 8-12 hours to reduce the iron in the mixture.
  • the mixture of ilmenite concentrate and red mud does not reach the melting temperature, so that melting does not occur, and sufficient reduction roasting proceeds when heating in the above range, and alumina, silica, etc. in the slag generated
  • the composition of the component can be adjusted, and the reduced iron component can be physically separated.
  • the heating can be carried out in a sintering furnace or a rotary furnace.
  • a carbon source can be added to easily heat up to a set temperature, and to control the reaction temperature and reaction time during the reduction reaction by heating. Very advantageous.
  • the reduced iron may be formed in a droplet form.
  • the iron oxide component and the iron oxide contained in the red mud concentrate in the ilmenite concentrate are reduced and discharged into an oxide, which is discharged in the form of molten discharge.
  • the reduced iron may be separated through magnetic screening (S300).
  • the iron component When the reduced iron is formed in the form of a molten droplet, the iron component may be aggregated and easily attracted to the magnetic, and the iron component in the ilmenite concentrate and red mud may be separated together in one process through magnetic screening.
  • titanium dioxide recovered by increasing the content of titanium dioxide derived from ilmenite concentrate and red mud can be greatly increased.
  • the residue is titanium dioxide slag.
  • the residue may be aerated and acid-leached to recover titanium dioxide in the residue (S400).
  • the residue may be aerated by injecting air for 30 minutes to 30 hours.
  • the acid leaching may be leached for 5 minutes to 10 hours using 0.05% to 30% sulfuric acid to remove iron in the residue.
  • the concentration of sulfuric acid depends on the nature of the residue and may be selected in a relationship inversely proportional to leaching time.
  • all the iron components in the residue may be removed.
  • Both gangue components can be removed in the aeration and acid leaching stages, and the iron component in the residue can be removed once more and the grade of titanium dioxide recovered can be greatly increased.
  • the titanium dioxide may be in the range of 88% to 95%.
  • high-quality titanium dioxide is recovered by effectively removing iron from residues through aeration and acid leaching.
  • Figure 2 is a process flow diagram of a ilmenite smelting method using red mud according to another embodiment of the present invention.
  • a mixture of ilmenite concentrate and red mud is formed to form a mixture (F100), in the mixture.
  • ilmenite concentrate and red mud are mixed to form a mixture (F100).
  • the ilmenite concentrate may be one of increasing the quality by beneficiating the ilmenite ore.
  • the ilmenite concentrate may contain 17 to 50% by weight of titanium dioxide (TiO 2 ).
  • the grade of ilmenite concentrate is generally 45% to 50%, but the higher the grade of titanium, the higher the process cost.
  • the ilmenite concentrate may contain 35 to 65% titanium dioxide and residual iron oxide (FeO x ).
  • the oxidized iron is reduced and separated and recovered in the magnetic screening step.
  • the red mud may be waste generated in the aluminum oxide smelting process.
  • the red mud includes titanium dioxide (TiO 2 ), alumina (Al 2 O 3 ) and silica (SiO 2 ).
  • the red mud is difficult to dispose as it is very high pH, it can be recovered by separating the iron and titanium dioxide contained in the red mud when mixed and reduced with ilmenite concentrate.
  • the red mud may contain 5 to 10 wt% of titanium dioxide (TiO 2 ).
  • the titanium dioxide contained in the red mud can be recovered together with the titanium dioxide contained in the ilmenite concentrate.
  • the red mud includes alumina and silica.
  • the alumina and silica may be included in the reduced titanium dioxide slag, in this case it reduces the grade of titanium dioxide, it is necessary to remove the alumina and silica, in this case can obtain a high quality titanium dioxide .
  • the red mud may contain 30 to 40 wt% of residual hematite (Fe 2 O 3 ) in addition to titanium dioxide.
  • the hematite in the red mud can be reduced together with the iron component of the ilmenite concentrate to form molten droplets and be physically separated by magnetic screening.
  • the red mud may be added in an amount of 10 to 200 parts by weight based on 100 parts by weight of the total amount of ilmenite concentrate.
  • Iron oxide contained in the red mud is first converted to reduced iron because it has a very fast reduction rate compared to ilmenite.
  • the resulting reduced iron is carburized by carbon and has a low melting point and acts as a strong reducing agent itself to facilitate the reduction of ilmenite and to increase the production of molten droplets which are reduced iron.
  • Red muene is added in an amount of 10 to 200 parts by weight based on 100 parts by weight of the total amount of ilmenite concentrate.
  • the mixture may be pressed into a pellet.
  • the efficiency of the subsequent heating and reducing step may be greatly increased, and the convenience of process operation may be greatly increased in a reduction process using a rotary furnace or a sintering furnace.
  • the carbon source may be any one selected from bituminous coal consisting of peat, lignite, bituminous coal and the like as coal.
  • the carbon source has high volatility.
  • the carbon source may increase the reaction temperature in the step of heating and reducing the mixture, and the reduced iron reduced by carbon itself becomes a very strong reducing agent, which greatly increases the efficiency of the reducing step and increases the production of melt droplets. Can be.
  • the carbon source may be added in 10 to 100 parts by weight based on 100 parts by weight of the mixture.
  • the maximum reduction rate can be expected when the carbon source is set to the maximum, and the unreacted residual carbon can be recovered and reused.
  • a carbon source may be added to the mixture and heated to 1400 to 2000 ° C. for 15 minutes to 10 hours to reduce and roast the iron in the mixture.
  • the heating is less than 1400 °C the mixture of ilmenite concentrate and red mud does not reach the melting temperature does not occur melting, it is possible to adjust the composition of the components of alumina, silica in the slag generated when heating in the above range, The iron components can be physically separated.
  • the heating may be performed in any one selected from the group consisting of a sintering furnace, a rotary furnace and an arc furnace.
  • a carbon source can be added to easily heat up to a set temperature, and to control the reaction temperature and reaction time during the reduction reaction by heating. Very advantageous.
  • the iron may be reduced to form a droplet (droplet).
  • the iron of the iron oxide component and the red hematite contained in the red menite concentrate is reduced and discharged as an oxide, which is discharged in the form of molten droplets.
  • the iron component When the reduced iron is formed in the form of a molten droplet, the iron component may be aggregated and easily attracted to the magnetic, and the iron component in the ilmenite concentrate and red mud may be separated together in one process through magnetic screening.
  • the melt is contained in 25 to 30% by weight in the reduced material.
  • the weight of the melt can be increased by heating and reducing the melt.
  • gravity when reduced in the arc, the weight of iron is increased, gravity can be selected.
  • the titanium dioxide slag is iron is separated and removed, the content of titanium dioxide derived from ilmenite concentrate and red mud increase, so that the quality of titanium dioxide can be greatly increased.
  • the titanium dioxide slag is introduced into a Bayer process to recover alumina (Al 2 O 3 ) (F400).
  • the Bayer process means a process of adding and leaching caustic soda under high temperature and high pressure to discharge the alumina into crystals.
  • the titanium dioxide slag may contain alumina and silica derived from red mud.
  • the quality of the recovered titanium dioxide may be lowered.
  • caustic soda NaOH
  • the alumina may be leached at a pressure of 15 to 20 bar at 150 to 200 ° C.
  • Alkaline leaching by caustic soda may be performed in the high temperature and high pressure range to recover alumina, and the leaching efficiency of alumina is reduced when it does not reach the temperature and pressure range.
  • alumina may be leached by adding caustic soda (NaOH) of 1.25 to 6.25 M to titanium dioxide slag.
  • CaOH caustic soda
  • alumina may be dissolved and precipitated, and silica contained in titanium dioxide slag may be dissolved and leached together.
  • the caustic soda is less than 1.25 M, it is difficult to contain less than 3% by weight of alumina in the titanium dioxide slag recovered.
  • the acid leaching may be performed by leaching for 5 minutes to 10 hours using 0.05% to 30% sulfuric acid to remove residual silica in the titanium dioxide slag.
  • the concentration of sulfuric acid depends on the nature of the residue and is inversely proportional to leaching time.
  • the recovered titanium dioxide slag may be in the range of 70% to 97%.
  • the titanium dioxide slag is used as a high quality titanium dioxide raw material such as pigments.
  • the smelting method of ilmenite using red mud is to separate and recycle the alumina (Al 2 O 3 ) contained in the red mud containing and to remove alumina, silica with iron impurities.
  • the quality of the remaining titanium dioxide slag can be greatly increased.
  • a mixture of 100 g of ilmenite concentrate and 100 g of red mud was pressed to prepare a briquette.
  • a pelletizer was produced using a pelletizer of a maximum pressure of 5 tons.
  • Bituminous coal was added to the briquettes and heated to 1450 ° C. in a rotary furnace.
  • melt droplets were separated using a magnetic separator, air was introduced into the residue, and acid leached by adding 30% sulfuric acid.
  • the quality of the recovered titanium dioxide was confirmed.
  • FIG. 5 is a schematic diagram showing the configuration of a ilmenite smelting method using red mud according to another embodiment of the present invention.
  • Powdered ilmenite and concentrate were uniformly mixed through a ball mill and then briquettes using a pelletizer with a maximum pressure of 5 tons.
  • Bituminous coal was added to the briquettes and reduced by heating at 2000 ° C. for 15 minutes in an arc furnace.
  • the melt droplets were separated using a magnetic separator.
  • the melt was removed to recover the titanium dioxide slag.
  • FIG. 6 is a photograph of a high temperature and high pressure leaching apparatus.
  • caustic soda was filled in the high temperature and high pressure leaching apparatus with titanium dioxide slag from which the melt was removed, and leached at 200 ° C. and 20 bar for 1 hour.
  • the leached components were analyzed to determine the content of alumina and silica in the titanium dioxide slag.
  • Acid leaching was carried out by adding 30% sulfuric acid to the titanium dioxide slag from which alumina was removed.
  • Figure 3 is a photograph of the starting material ilmenite, red mud and bituminous coal samples in the ilmenite smelting method using red mud according to an embodiment of the present invention.
  • Figure 4 is a photograph of the iron reduced by heating in the smelting method of ilmenite utilizing red mud according to an embodiment of the present invention as a droplet.
  • Table 1 shows the results of analyzing the components of the starting material ilmenite concentrate and red mud according to an embodiment of the present invention with an energy dispersive X-ray fluorescence spectrometer. Referring to Table 1, it was confirmed that the ilmenite concentrate and red mud contained titanium dioxide component and iron component necessary for separation recovery.
  • Table 2 shows the components of titanium dioxide slag after the melting and reducing step through heating.
  • the iron oxide (FeO x ) of the slag was confirmed to be a very small amount compared to the red mud and ilmenite injected into all the components 10%, it was confirmed that the reduction reaction proceeded very effectively.
  • the method of smelting ilmenite utilizing red mud according to the present invention utilizes red mud, which is difficult to treat, it is possible to obtain high quality titanium dioxide by smelting low grade ilmenite in an environmentally friendly manner.
  • Red mud contains alumina and silica in addition to iron oxide and remains after magnetic screening after reduction, thereby increasing the load of the acid leaching process and reducing the quality of the recovered titanium dioxide.
  • FIG. 7 is a graph illustrating alumina and silica contents according to caustic soda concentration in a Bayer process step in the ilmenite smelting method using red mud according to another embodiment of the present invention.
  • silica was removed as well as alumina remaining in the titanium dioxide slag when the caustic soda concentration was 2.5 M or more when leaching at 200 ° C. and 20 bar for 1 hour.
  • the concentration of caustic soda is 2.5 M or more, the content of alumina and silica can be effectively controlled to 3% by weight or less.
  • iron and titanium dioxide may be separated and recovered efficiently by using waste red mud.
  • the ilmenite smelting method using red mud according to another embodiment of the present invention can be recycled by obtaining a variety of by-products using red mud, which is a difficult treatment.
  • alumina and silica contained in red mud when they are concentrated in the reduced titanium dioxide slag, they may be introduced into a Bayer process to leach at a high temperature and high pressure to remove not only impurities, but also silica, and alumina emitted as crystals. It can be reused.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
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  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

La présente invention concerne un procédé de fusion d'ilménite à l'aide de boue rouge, le procédé comprenant les étapes de : mélange d'un concentré d'ilménite et de boue rouge pour former un mélange ; ajout d'une source de carbone au mélange, puis chauffage pour réduire le fer dans le mélange et former une gouttelette fondue ; soumission de la gouttelette fondue à séparation magnétique pour éliminer le fer et récupérer un laitier de dioxyde de titane ; introduction du laitier de dioxyde de titane dans un procédé Bayer pour récupérer l'alumine (Al2O3) ; et soumission du laitier de dioxyde de titane débarrassé de l'alumine à lixiviation acide pour éliminer la silice (SiO2).
PCT/KR2018/004563 2017-04-19 2018-04-19 Procédé de fusion d'ilménite à l'aide de boue rouge Ceased WO2018194397A1 (fr)

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AU2018256247A AU2018256247B2 (en) 2017-04-19 2018-04-19 Method for smelting ilmenite using red mud

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Application Number Priority Date Filing Date Title
KR1020170050662A KR101790128B1 (ko) 2017-04-19 2017-04-19 일메나이트를 이용한 이산화티타늄 제련방법
KR10-2017-0050662 2017-04-19
KR1020180041532A KR101900672B1 (ko) 2018-04-10 2018-04-10 적니를 활용한 일메나이트 제련방법
KR10-2018-0041532 2018-04-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022178037A1 (fr) * 2021-02-16 2022-08-25 Gron Metallic Group, Inc. Procédé de récupération de métaux et d'oxydes à partir de stériles contenant du fer
CN115301400A (zh) * 2022-08-05 2022-11-08 中国地质科学院矿产综合利用研究所 一种超微细粒钛铁矿选矿的系统和方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0160753B1 (ko) * 1990-05-24 1998-11-16 마이클 존 홀리트 산용해성 티타니아의 제조방법
KR19990028922A (ko) * 1995-07-11 1999-04-15 네빌 스튜어트 티펜 고수율 침전 제조방법
JP2012121798A (ja) * 2003-06-16 2012-06-28 Univ Of Leeds 反応性金属酸化物の抽出方法
JP2013532232A (ja) * 2010-06-30 2013-08-15 ガルダ，ケキ，ホルムスジ アルミ含有鉄鉱石およびチタン含有鉄鉱石および残留物からの金属抽出法
KR101790128B1 (ko) * 2017-04-19 2017-10-26 한국지질자원연구원 일메나이트를 이용한 이산화티타늄 제련방법

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102766715A (zh) * 2012-07-27 2012-11-07 胡长春 一种钛铁矿的无渣生产工艺

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0160753B1 (ko) * 1990-05-24 1998-11-16 마이클 존 홀리트 산용해성 티타니아의 제조방법
KR19990028922A (ko) * 1995-07-11 1999-04-15 네빌 스튜어트 티펜 고수율 침전 제조방법
JP2012121798A (ja) * 2003-06-16 2012-06-28 Univ Of Leeds 反応性金属酸化物の抽出方法
JP2013532232A (ja) * 2010-06-30 2013-08-15 ガルダ，ケキ，ホルムスジ アルミ含有鉄鉱石およびチタン含有鉄鉱石および残留物からの金属抽出法
KR101790128B1 (ko) * 2017-04-19 2017-10-26 한국지질자원연구원 일메나이트를 이용한 이산화티타늄 제련방법

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022178037A1 (fr) * 2021-02-16 2022-08-25 Gron Metallic Group, Inc. Procédé de récupération de métaux et d'oxydes à partir de stériles contenant du fer
CN115301400A (zh) * 2022-08-05 2022-11-08 中国地质科学院矿产综合利用研究所 一种超微细粒钛铁矿选矿的系统和方法
CN115301400B (zh) * 2022-08-05 2023-11-07 中国地质科学院矿产综合利用研究所 一种超微细粒钛铁矿选矿的系统和方法

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