Patent
Process for beneficiation of titaniferous ores
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TLDR
In this article, a process for beneficiating titaniferous ores to produce essentially pure titanium dioxide comprising alternatingly contacting the ore in a gas-solids reactor with carbon monoxide for a short period of time and then with chlorine, and then repeating the alternate carbonylation and chlorination steps at temperatures of 700 to 1,150* C under fluidizing conditions; converting iron oxide and oxides of metals other than titanium in the ore to iron and other metal chlorides and removing same by volatilization.Abstract:
Process for beneficiating titaniferous ores to produce essentially pure titanium dioxide comprising alternatingly contacting the ore in a gas-solids reactor with carbon monoxide for a short period of time and then with chlorine for a short period of time and then repeating the alternate carbonylation and chlorination steps at temperatures of 700 to 1,150* C. under fluidizing conditions; converting iron oxide and oxides of metals other than titanium in the ore to iron and other metal chlorides and removing same by volatilization. The titanium dioxide produced is useful as a starting material for the preparation of titanium dioxide pigment.read more
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Carbonation of metal silicates for long-term CO2 sequestration
TL;DR: In this article, the authors describe a process of sequestering carbon dioxide in a metal silicate with a caustic alkali-metal hydroxide to produce a carbonate of the metal formerly contained in the silicate.
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Process for beneficiating a titaniferous ore and production of chlorine and iron oxide
TL;DR: In this article, a void containing iron chloride when the ore is being beneficiated at a temperature of about 1,250* to 1,380* K is described. But this void contains iron chloride only when the iron oxide and unreacted ferric chloride are recycled to the reactor.
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Process for treating chlorinated titaniferous material to remove vanadium
TL;DR: In this article, vanadium impurities in chlorinated titaniferous materials are rendered easily removable by reacting said chlorinated Titaniferous Materials with a high surface area carbon at an elevated temperature.
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Chlorine treatment of titaniferous ores
TL;DR: Artificial rutile of high TiO 2 grade is produced by chlorine treatment of titaniferous ore such as ilmenite which comprises a combination of (1) a pretreatment step in which the ore is oxidized by roasting at a temperature below the sintering temperature thereof, (2) a chloridization step in that the pretreated ore is subjected to a chlorine treatment in a fluidized bed chloridisation furnace thereby to chloridize and remove selectively iron oxides within the ore without the formation of TiCl 4, and (3) an aftertreatment
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Process of making titanium and other compounds
TL;DR: In this paper, a process of making oxides of a certain group of metals is described, and a process for preparing titanium oxide and/or zirconium oxide in substanially pure form is described.