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Class Information
Number: 423/79
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Group ivb metal (ti, zr, or hf) > Volatizing > Titanium, zirconium, or hafnium > Contacting feed solids with chlorine gas
Description: Processes in which the vaporization of the Ti, Zr, or Hf is effected during contact of a solid feed material with gaseous chlorine.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7476378 |
Process for producing titanium dioxide |
Jan. 13, 2009 |
| 7368096 |
Process for separating solids from a purification purge stream |
May. 6, 2008 |
| 7153488 |
Suppression of the formation of noxious substances during chloride processes |
Dec. 26, 2006 |
| 6423291 |
Titanium tetrachloride production |
Jul. 23, 2002 |
| 6328938 |
Manufacture of titanium dioxide with recycle of waste metal chloride stream |
Dec. 11, 2001 |
| 5935545 |
Process for producing an aqueous solution comprising ferric chloride |
Aug. 10, 1999 |
| 5762890 |
Zirconium and hafnium separation in chloride solutions using continuous ion exchange chromatography |
Jun. 9, 1998 |
| 5670121 |
Process for controlling the temperature of a fluidized bed reactor in the manufacture of titanium tetrachloride |
Sep. 23, 1997 |
| 5569440 |
Process for the reduction of carbochlorination residue |
Oct. 29, 1996 |
| 5411724 |
Method for substitution of alumina in the framework of zeolites by silicon |
May. 2, 1995 |
| 5389353 |
Fluidized bed process for chlorinating titanium-containing material and coke useful in such process |
Feb. 14, 1995 |
| 5171549 |
Process for decreasing the level of impurities in zirconium chloride, titanium chloride and hafnium chloride |
Dec. 15, 1992 |
| 5160482 |
Zirconium-hafnium separation and purification process |
Nov. 3, 1992 |
| 5073355 |
Process for the removal of chlorine from off-gases |
Dec. 17, 1991 |
| 5063032 |
Method of preparing a synthetic rutile from a titaniferous slag containing magnesium values |
Nov. 5, 1991 |
| 5049363 |
Recovery of scandium, yttrium and lanthanides from titanium ore |
Sep. 17, 1991 |
| 5039336 |
Recovery of scandium, yttrium and lanthanides from zircon sand |
Aug. 13, 1991 |
| 5032372 |
Dilute-phase chlorination procedure |
Jul. 16, 1991 |
| 4961911 |
Process for reducing carbon monoxide emissions from a fluidized bed titanium dioxide chlorinator |
Oct. 9, 1990 |
| 4933154 |
Production of ZrO.sub.2 powder of very fine particle size |
Jun. 12, 1990 |
| 4923577 |
Electrochemical-metallothermic reduction of zirconium in molten salt solutions |
May. 8, 1990 |
| 4913884 |
Uranium-preextraction in zirconium/hafnium separations process |
Apr. 3, 1990 |
| 4865694 |
Electrochemical decomposition of complexes of zirconium or hafnium |
Sep. 12, 1989 |
| 4854972 |
Nitrogen-free process for chloride-route TiO.sub.2 pigment manufacture |
Aug. 8, 1989 |
| 4840774 |
Process for the production of zirconium tetrachloride from dissociated zircon |
Jun. 20, 1989 |
| 4812149 |
Hot inert gas purging for filter blowback process |
Mar. 14, 1989 |
| 4652434 |
Chlorination of ores containing alkali or alkaline earth values |
Mar. 24, 1987 |
| 4619815 |
Chlorination of iron-containing metaliferous material |
Oct. 28, 1986 |
| 4595573 |
Chlorinator furnace and method for producing tetrachloride of such metals as titanium and zirconium |
Jun. 17, 1986 |
| 4540551 |
Two stage chlorination of titaniferous ore with FeCl.sub.3 reclamation |
Sep. 10, 1985 |
| 4521385 |
Recovery of titanium values |
Jun. 4, 1985 |
| 4519988 |
Two stage chlorination of titaniferous ore |
May. 28, 1985 |
| 4517163 |
Process for making titanium dioxide concentrates |
May. 14, 1985 |
| 4489045 |
Recovery of by-product calcium chloride from chlorination of titaniferous ores |
Dec. 18, 1984 |
| 4487677 |
Electrolytic recovery system for obtaining titanium metal from its ore |
Dec. 11, 1984 |
| 4460550 |
Process for production of titanium dioxide from titaniferrous ore |
Jul. 17, 1984 |
| 4442076 |
Entrained downflow chlorination of fine titaniferous material |
Apr. 10, 1984 |
| 4442075 |
Titanium ore chlorination process using a molten salt |
Apr. 10, 1984 |
| 4440730 |
Chlorination of titanium ores using lignitic reactive carbons |
Apr. 3, 1984 |
| 4435365 |
Process for producing titanium tetrachloride |
Mar. 6, 1984 |
| 4425309 |
Production of a purified alumina-silica product and substantially pure aluminum trichloride from bauxites and clays |
Jan. 10, 1984 |
| 4425308 |
Production of a purified alumina-silica product and substantially pure aluminum chloride from bauxites and clays |
Jan. 10, 1984 |
| 4425311 |
Production of a purified alumina-silica product and substantially pure aluminum trichloride from bauxites and clays |
Jan. 10, 1984 |
| 4425310 |
Production of aluminum chlorides from bauxites and clays |
Jan. 10, 1984 |
| 4389391 |
Process for beneficiating titaniferous ores |
Jun. 21, 1983 |
| 4363789 |
Alumina production via aluminum chloride oxidation |
Dec. 14, 1982 |
| 4355007 |
Two stage chlorination process for aluminum value containing source |
Oct. 19, 1982 |
| 4355008 |
Chlorination process |
Oct. 19, 1982 |
| 4343775 |
Entrained-flow chlorination of fine titaniferous materials |
Aug. 10, 1982 |
| 4329322 |
Chlorination of titaniferous material using treated coal for vanadium removal |
May. 11, 1982 |
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