EP0091560B1 - Procédé de production de concentrés de dioxyde de titane - Google Patents

Procédé de production de concentrés de dioxyde de titane Download PDF

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Publication number
EP0091560B1
EP0091560B1 EP83102302A EP83102302A EP0091560B1 EP 0091560 B1 EP0091560 B1 EP 0091560B1 EP 83102302 A EP83102302 A EP 83102302A EP 83102302 A EP83102302 A EP 83102302A EP 0091560 B1 EP0091560 B1 EP 0091560B1
Authority
EP
European Patent Office
Prior art keywords
titanium oxide
temperatures
iron
titanium dioxide
chlorine
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.)
Expired
Application number
EP83102302A
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German (de)
English (en)
Other versions
EP0091560A1 (fr
Inventor
Klaus Dr. Jödden
Gero Dr. Heymer
Hans Werner Stephan
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.)
Hoechst AG
Original Assignee
Hoechst AG
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Filing date
Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of EP0091560A1 publication Critical patent/EP0091560A1/fr
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Publication of EP0091560B1 publication Critical patent/EP0091560B1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/1204—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent
    • C22B34/1209—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent by dry processes, e.g. with selective chlorination of iron or with formation of a titanium bearing slag

Definitions

  • the present invention relates to a process for the production of titanium dioxide concentrates by removing the iron from titanium oxide-containing material containing iron oxides with the aid of chlorine-containing gases without the addition of carbon at temperatures of 800 to 1,300 ° C.
  • a method for producing a titanium dioxide concentrate from ilmenite ore is known from US Pat. No. 3,803,287, in which the ore fluidized with air is first roasted oxidatively at temperatures above 850 ° C. before the oxidized ore after mixing with it finely divided coal is chlorinated at a temperature of about 900 ° C in a fluidization zone, with ferric chloride escaping through the gas phase.
  • the chlorination is stopped.
  • the remaining iron (III) chloride is finally removed from the chlorinated ore removed from the fluidization zone by leaching with dilute mineral acid.
  • the process for the production of artificial rutile according to US-A-3 950 489 has a total of five stages.
  • ilmenite ore is oxidatively roasted at temperatures of 900 to 1 050 ° C.
  • the oxidized roasted ore is chlorinated in the presence of up to 10% by weight of coal in a fluid bed.
  • an artificial rutile with a high Ti0 2 content is obtained from the chlorinated ore by magnetic separation, with the help of a vibrating water jet and by electrostatic separation.
  • the ilmenite is heated in a fluidized bed reactor in a nitrogen stream at 900 ° C. for 2 hours.
  • the resulting material is mixed with anthracite and heated to 950 ° C for one hour.
  • the reduced material is magnetically separated from the unused anthracite.
  • the anthracite-free material is finally leached with boiling hydrochloric acid, with the leaching residue consisting of over 90% Ti0 2 .
  • iron is removed from material containing titanium oxide by either allowing the material containing titanium oxide to move in the direction of gravity at temperatures of 800 to 1,300 ° C. and doing so with at least 70 Volume% chlorine and possibly an inert gas existing gas mixture treated in countercurrent or whirled up with the gas mixture.
  • Titanium oxide tends to sinter at higher temperatures. Sintered titanium oxide-containing material reacts only very slowly with a chlorine-containing gas mixture, so that the reaction of the chlorine takes place essentially only on the surface of compact pieces of the titanium oxide-containing material. Even if the material containing titanium oxide is whirled up with the chlorine-containing gas mixture, sintering effects occur if the gas distribution is uneven.
  • ilmenite main constituents: FeTi0 3 , Fe 2 0 3 , Ti0 2
  • leukoxene weathering product of ilmenite
  • titanium magnetite main constituents: Fe 3 0 4 , Fe z 0 3 , TiO 2
  • TiO 2 titanium oxide-containing material
  • the vanadium when using a material containing titanium oxide, which also contains oxidically bound vanadium, the vanadium is simultaneously volatilized as chloride or oxychloride.
  • the titanium oxide-containing material remains largely free-flowing when annealed in an inert gas atmosphere, for example under nitrogen.
  • an inert gas atmosphere for example under nitrogen.
  • the titanium oxide-containing material is annealed in an oxidizing atmosphere, for example in air, compact parts are formed which preferably have to be comminuted by grinding.
  • the treatment with chlorine-containing gases can also be carried out at rest.
  • Example 4 was repeated with the modification that, before its chlorination, the ilmenite was calcined in air instead of under nitrogen and then finely ground (grain size: 60 to 600 ⁇ m).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Compounds Of Iron (AREA)

Claims (3)

1. Procédé de préparation de concentrés de dioxyde de titane par élimination du fer de matériaux contenant de l'oxyde de titane et des oxydes de fer à l'aide de gaz contenant du chlore, sans addition de carbone, à des températures de 800 à 1 300 °C, caractérisé en ce que l'on recuit le matériau contenant de l'oxyde de titane à des températures de 900 à 1 300 °C en atmosphère de gaz inerte avant d'en éliminer le fer.
2. Procédé selon la revendication 1, caractérisé en ce que l'on recuit le matériau contenant de l'oxyde de titane à des températures allant jusqu'à 1 050 °C.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le matériau contenant de l'oxyde de titane présente une granulométrie de 20 à 1 000 µm.
EP83102302A 1982-03-24 1983-03-09 Procédé de production de concentrés de dioxyde de titane Expired EP0091560B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823210729 DE3210729A1 (de) 1982-03-24 1982-03-24 Verfahren zur herstellung von titandioxid-konzentraten
DE3210729 1982-03-24

Publications (2)

Publication Number Publication Date
EP0091560A1 EP0091560A1 (fr) 1983-10-19
EP0091560B1 true EP0091560B1 (fr) 1986-05-28

Family

ID=6159119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102302A Expired EP0091560B1 (fr) 1982-03-24 1983-03-09 Procédé de production de concentrés de dioxyde de titane

Country Status (7)

Country Link
US (1) US4517163A (fr)
EP (1) EP0091560B1 (fr)
AU (1) AU550812B2 (fr)
CA (1) CA1213418A (fr)
DE (2) DE3210729A1 (fr)
NO (1) NO831042L (fr)
ZA (1) ZA832015B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629607A (en) * 1984-12-27 1986-12-16 Michel Gueguin Process of producing synthetic rutile from titaniferous product having a high reduced titanium oxide content
DE4138516A1 (de) * 1991-11-23 1993-05-27 Luk Fahrzeug Hydraulik Pumpe
CA2136299A1 (fr) * 1992-05-21 1993-11-25 James William Reeves Methode amelioree d'enrichissement des materiaux titaniferes contenant du fer
JP3733599B2 (ja) * 1993-08-11 2006-01-11 住友化学株式会社 金属酸化物粉末およびその製造方法
US7611588B2 (en) * 2004-11-30 2009-11-03 Ecolab Inc. Methods and compositions for removing metal oxides

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803287A (en) * 1971-04-07 1974-04-09 Mitsubishi Metal Mining Co Ltd Method for producing titanium concentrate
US3950489A (en) * 1973-03-16 1976-04-13 Mitsubishi Kinzoku Kabushiki Kaisha Chlorine treatment of titaniferous ores

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1845342A (en) * 1928-02-02 1932-02-16 Vanadium Corp Treatment of titanium and iron containing materials
US2184885A (en) * 1938-04-30 1939-12-26 Pittsburgh Plate Glass Co Treatment of titanium ores
US2184884A (en) * 1938-04-30 1939-12-26 Pittsburgh Plate Glass Co Treatment of titanium ores
US2852362A (en) * 1955-06-21 1958-09-16 Nat Lead Co Process for forming titanium concentrates
US2933373A (en) * 1957-05-06 1960-04-19 Titanium Metals Corp Beneficiation of titaniferous iron ores
US3159454A (en) * 1960-09-26 1964-12-01 Barnard O Wilcox Recovering tio2 from ilmenite
GB1359882A (en) * 1971-01-27 1974-07-17 Laporte Industries Ltd Beneficiation of ores
US3875286A (en) * 1972-02-14 1975-04-01 Laporte Industries Ltd Beneficiation of ilmenite ores
AU504225B2 (en) * 1975-10-17 1979-10-04 Titanium Technology (Aust.) Ltd. Oxidation of titaniferous ores

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803287A (en) * 1971-04-07 1974-04-09 Mitsubishi Metal Mining Co Ltd Method for producing titanium concentrate
US3950489A (en) * 1973-03-16 1976-04-13 Mitsubishi Kinzoku Kabushiki Kaisha Chlorine treatment of titaniferous ores

Also Published As

Publication number Publication date
DE3210729A1 (de) 1983-10-06
AU1275283A (en) 1983-09-29
DE3363684D1 (en) 1986-07-03
NO831042L (no) 1983-09-26
EP0091560A1 (fr) 1983-10-19
US4517163A (en) 1985-05-14
ZA832015B (en) 1983-12-28
AU550812B2 (en) 1986-04-10
CA1213418A (fr) 1986-11-04

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