EP0029699B1 - Chloruration de minerais titanifères en utilisant du carbone poreux - Google Patents

Chloruration de minerais titanifères en utilisant du carbone poreux Download PDF

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Publication number
EP0029699B1
EP0029699B1 EP80304130A EP80304130A EP0029699B1 EP 0029699 B1 EP0029699 B1 EP 0029699B1 EP 80304130 A EP80304130 A EP 80304130A EP 80304130 A EP80304130 A EP 80304130A EP 0029699 B1 EP0029699 B1 EP 0029699B1
Authority
EP
European Patent Office
Prior art keywords
chlorination
titaniferous material
porous carbon
temperature
titaniferous
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
EP80304130A
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German (de)
English (en)
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EP0029699A1 (fr
Inventor
James P. Bonsack
Fred Schneider, Jr.
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.)
Ineos Pigments USA Inc
Original Assignee
SCM Corp
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Filing date
Publication date
Priority claimed from US06/165,252 external-priority patent/US4310495A/en
Application filed by SCM Corp filed Critical SCM Corp
Publication of EP0029699A1 publication Critical patent/EP0029699A1/fr
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Publication of EP0029699B1 publication Critical patent/EP0029699B1/fr
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    • 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
    • C22B34/1218—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 obtaining titanium or titanium compounds from ores or scrap by dry processes
    • C22B34/1222—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 obtaining titanium or titanium compounds from ores or scrap by dry processes using a halogen containing agent

Definitions

  • Titaniferous materials are often subjected to chlorination as chlorination is an efficient and economical way to obtain a high purity source of titanium for making titanium alloys, titanium compounds, and especially pigmentary titanium dioxide.
  • Several processes have been described in the art for the chlorination of titaniferous materials. Such processes generally react a titanium-containing raw material such as rutile ore or ilmenite ore, with a chlorine-providing material and a carbon reductant at an elevated temperature according to one or both of the following equations:
  • the present invention is a process for the chlorination of titaniferous materials.
  • a mixture of titaniferous material and porous carbon reductant having internal surface due to micropores of less than 2 nm (20 A) is reacted with a chlorine-providing material in a chlorination reaction zone at a temperature of at least 600°C.
  • the present process has been found effective and efficient for substantially chlorinating the titanium values of most titanium-bearing ores. Additionally, at temperatures greater than 800°C. vanadium impurities in the titanium-containing materials can be rendered readily separable from the titanium-containing products.
  • the present invention is a chlorination process.
  • the chlorine-providing material can be chlorine gas, HCI, an organo-chloride or mixture thereof.
  • the chlorine-providing material is used as the fluidizing gas in the process.
  • the gas contain a high percentage of chlorine such that a minimum volume of fluidizing gas can be used and maximum reaction rates obtained.
  • Chlorine gas (C1 2 ) is preferred; however, also organo-chlorides can be used. Highly reactive chlorine sources such as NOCI and selective chlorination agents such as FeCI 2 are not within the scope of the present invention.
  • granular porous carbon reductant and granular titaniferous material are blended together and charged into the fluid-bed reactor.
  • the reactor temperature is raised to a chlorination reaction temperature of at least 600°C. and chlorine-providing gas is introduced into the bottom of the reactor to fluidize the bed and an off-gas product stream is withdrawn from the top of the bed.
  • a further benefit of low-temperature fluid-bed operation of the present process is that no liquid metal chloride impurities are formed in the fluid bed itself. For example, at 600° to 670°C. the fluidized bed and the off-gas products would be below the melting points of normally troublesome calcium, magnesium, and iron chlorides. At conventional operating temperatures of greater than 800°C., liquid chlorides of calcium and magnesium tend to cause bed defluidization.
  • Australian rutile ore containing about 96% Ti0 2 and having a particle size such that substantially all of it would pass through a 40-mesh screen and be retained on a 140-mesh screen was chlorinated by blending with a porous carbon reductant and reacting with chlorine in a fluid-bed reactor.
  • the reactor consisted of a 3-inch diameter quartz tube with a porous quartz gas distributor plate near one end.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (10)

1. Procédé de chloruration d'une matière titanifére dans lequel on fait réagir des particules discrètes de matière titanifére et de réducteur carboné poreux en présence d'une matière fournissant du chlore choisie dans le groupe constitué par le chlore gazeux, HCI, un chlorure organique et leurs mélanges dans une zone de réaction de chloruration à une température d'au moins 600°C jusqu'à ce que la teneur en titane de ladite matière titanifère soit pratiquement chlorée, ledit réducteur au carbone poreux étant caractérisé en ce qu'il a des micrcpores ayant un diamètre de pores inférieur à 2 nm (20 A) et une surface interne dans lesdites micropores comprise entre 10 m2/g et 1500 m2/g.
2. Procédé de la revendication 1, où ladite matière titanifère et ledit réducteur carboné sont l'un et l'autre des matières granulaires qui passent pratiquement à travers un tamis de 2,38 mm et sont pratiquement retenus sur un tamis de 0,105 mm et ladite zone de réaction de chloruration est un lit fluidisé.
3. Procédé de la revendication 1, où ladite matière titanifère et ledit réducteur au carbone poreux sont l'un et l'autre des matières en poudre qui passent pratiquement à travers un tamis de 0,105 mm d'ouverture de maille, ladite zone de réaction de chloruration est une zone de réaction d'écoulement et ladite température est comprise entre 800°C et 1200°C.
4. Procédé de la revendication 1, où ladite matière titanifère et ledit réducteur au carbone poreux sont l'un et l'autre des matières en poudre et sont maintenus dans un écoulement pratiquement laminaire au moment où ils passent à travers la zone de réaction de chloruration, ladite température étant comprise entre 1350°C et 1950°C, le rapport atomique du carbone dans ladite zone de réaction de chloruration à l'oxygène dans ladite zone étant supérieur à 1:1 pour la formation de CO, le rapport des moles de chlore dans ladite matière fournissant du chlore au titane dans ladie matière titanifère n'étant pas supérieur à 2 et le rapport du fer au titane dans ladite matière titanifère n'étant pas supérieur à 2.
5. Procédé de la revendication 1, où ledit réducteur au carbone poreux est un charbon traité.
6. Procédé de la revendication 5, où ledit charbon est du charbon d'anthracite.
7. Procédé de la revendication 5, où l'on traite ledit charbon par réaction avec de l'air, CO2, ou de la vapeur à une température dépassant 400°C jusqu'à production desdits micropores.
8. Procédé de la revendication 1, où ledit réducteur au carbone poreux a une surface interne dans lesdits micropores d'au moins 100 m2/g et ne dépassant pas 1000 m2/g.
9. Procédé de la revendication 1, où ladite température est supérieure à 800°C, ladite zone de réaction de chloruration est un lit fluide et pratiquement toutes les impuretés de vanadium présentes dans ladite matière titanifère sont mises à réagir de manière qu'aux températures comprises entre 450°C et -25°C lesdites impuretés au vanadium ayant réagi soient sous une forme physique différente de ladite teneur en titane chloré de ladite matière titanifère.
10. Procédé de la revendication 1, où ladite matière titanifère est le minerai d'ilménite.
EP80304130A 1979-11-19 1980-11-18 Chloruration de minerais titanifères en utilisant du carbone poreux Expired EP0029699B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US9545779A 1979-11-19 1979-11-19
US165252 1980-07-02
US06/165,252 US4310495A (en) 1980-07-02 1980-07-02 Low-temperature fluid-bed chlorination of titaniferous ore
US95457 1998-08-06

Publications (2)

Publication Number Publication Date
EP0029699A1 EP0029699A1 (fr) 1981-06-03
EP0029699B1 true EP0029699B1 (fr) 1983-11-23

Family

ID=26790248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80304130A Expired EP0029699B1 (fr) 1979-11-19 1980-11-18 Chloruration de minerais titanifères en utilisant du carbone poreux

Country Status (4)

Country Link
EP (1) EP0029699B1 (fr)
JP (1) JPS56501522A (fr)
DE (1) DE3065722D1 (fr)
WO (1) WO1981001404A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1231535A (fr) * 1982-09-02 1988-01-19 Michael Robinson Chloration de matieres oxydes
US4442076A (en) * 1982-11-17 1984-04-10 Scm Corporation Entrained downflow chlorination of fine titaniferous material
DE4325690A1 (de) * 1993-07-30 1995-02-02 Siemens Ag Verfahren und Einrichtung zur Rückgewinnung von Bestandteilen eines Katalysators
WO2017197467A1 (fr) * 2016-05-19 2017-11-23 Iluka Resources Limited Agglomération de fines de matériaux porteurs de titane

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1179394A (en) * 1914-06-24 1916-04-18 Titanium Alloy Mfg Co METHOD AND MEANS FOR PRODUCING TITANIUM TETRACHLORID, (TiCl4.)
US2184884A (en) * 1938-04-30 1939-12-26 Pittsburgh Plate Glass Co Treatment of titanium ores
US2761760A (en) * 1955-06-02 1956-09-04 Nat Distillers Prod Corp Process for the manufacture of titanium tetrachloride
US3418074A (en) * 1965-11-17 1968-12-24 Du Pont Process for chlorinating titaniferous ores
US3497326A (en) * 1967-01-18 1970-02-24 Nicolas Soloducha Apparatus for producing titanium tetrachloride and other halides
FR2088510B1 (fr) * 1970-05-12 1973-11-23 Sir Soc Italiana Resine Spa
US4017304A (en) * 1972-10-20 1977-04-12 E. I. Du Pont De Nemours And Company Process for selectively chlorinating the titanium content of titaniferous materials
US3977863A (en) * 1973-09-18 1976-08-31 E. I. Du Pont De Nemours And Company Process for selectively chlorinating the titanium content of titaniferous materials
IT1026405B (it) * 1975-01-21 1978-09-20 Centro Speriment Metallurg Materiale carbonioso con elevate caratteristiche di sviluppo e di attivita superficiale e processo per ottenerlo
CA1106141A (fr) * 1976-04-12 1981-08-04 Michel Gueguin Methode de reproduction de tetrachlorure de titane a partir de matieres a teneur d'oxyde de titane, et produit ainsi obtenu
CA1096177A (fr) * 1977-07-21 1981-02-24 James P. Bonsack Traduction non-disponible
US4244935A (en) * 1978-04-20 1981-01-13 Aluminum Company Of America Method of forming metal chlorides

Also Published As

Publication number Publication date
DE3065722D1 (en) 1983-12-29
JPS56501522A (fr) 1981-10-22
EP0029699A1 (fr) 1981-06-03
WO1981001404A1 (fr) 1981-05-28

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