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7780931 |
Preparation for Tio2 powders from a waste liquid containing titanium compounds
Process for preparing TiO2 powders starting from a liquid comprising chlorinated titanium compounds, the process comprising: a) atomizing said liquid and reacting the atomized liquid with a flow of...
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7476378 |
Process for producing titanium dioxide
This disclosure relates to a process for producing titanium dioxide, comprising: a) providing a quantity of liquid titanium tetrahalide for reacting with an oxygen-containing gas;b) vaporizing a...
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7368096 |
Process for separating solids from a purification purge stream
The disclosure is directed to a process for isolating solids from a purification purge stream comprising an impurity present as a solid, wherein the purification purge stream is substantially free...
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7153488 |
Suppression of the formation of noxious substances during chloride processes
The present invention is directed to the suppression of the formation noxious compounds such as furans. According to the present invention, a venturi device is used to rapidly quench a chlorinator...
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6423291 |
Titanium tetrachloride production
The invention provides a process for the production of titanium tetrachloride (TiCl4) by the chlorination of titanium values in a titanium-containing starting material. The process includes...
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6328938 |
Manufacture of titanium dioxide with recycle of waste metal chloride stream
A method for the integration of a manufacturing facility with a salt dome, which manufacturing facility is one for the production of high purity titanium dioxide using chlorine as a reactant. The...
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5935545 |
Process for producing an aqueous solution comprising ferric chloride
The present invention provides a process for preparing an aqueous solution of FeCl3. The process involves the steps of: (a) reacting an ore material comprising titanium and iron with chlorine and...
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5762890 |
Zirconium and hafnium separation in chloride solutions using continuous ion exchange chromatography
A method and system for improved ion exchange chromatographic elemental separations of zirconium and hafnium elements and also, if desired, separations of the isotopes thereof from crude zirconium...
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5670121 |
Process for controlling the temperature of a fluidized bed reactor in the manufacture of titanium tetrachloride
This invention relates to a process for controlling the temperature of a fluidized bed reactor in the manufacture of titanium tetrachloride, wherein an exhaust gas stream comprising carbonyl...
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5569440 |
Process for the reduction of carbochlorination residue
An improved carbochlorination process for the production of volatile metal chlorides is disclosed. When chlorine gas contacts a metal oxide or a mixed metal oxide in a reaction zone in the presence...
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5411724 |
Method for substitution of alumina in the framework of zeolites by silicon
Aluminum can be removed from tetrahedral framework sites of zeolite frameworks and substituted with elements such as silicon, gallium, titanium or zirconium. The process involves three steps:(a)...
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5389353 |
Fluidized bed process for chlorinating titanium-containing material and coke useful in such process
In a fluidized bed process for chlorinating rirnium-containing material, an improvement is disclosed comprising utilizing in the process calcined petroleum shot coke, calcined petroleum fluid coke...
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5171549 |
Process for decreasing the level of impurities in zirconium chloride, titanium chloride and hafnium chloride
An improved halogenator process and system is provided which significantly and economically decreases the level of impurities in the processing of various refractory metals and their halides and...
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5160482 |
Zirconium-hafnium separation and purification process
A process for the recovery of substantially pure zirconium values from zircon sand which also contains Ra, U, Hf, Pb and other metal values, comprising contacting zircon sand in a chlorinator with...
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5073355 |
Process for the removal of chlorine from off-gases
A process for the removal of chlorine from off-gases which continuously or sporadically contain small amounts of chlorine by scrubbing the off-gases with a ferrous chloride-containing aqueous...
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5049363 |
Recovery of scandium, yttrium and lanthanides from titanium ore
A process for extracting scandium from titanium ore includes the steps of: feeding the titanium ore to a fluidized bed chlorinator at about 1000° C. to produce a vaporous (generally titanium and ...
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5039336 |
Recovery of scandium, yttrium and lanthanides from zircon sand
This is a process for extracting scandium from zircon ore. It utilizes feeding zircon sand to a fluidized bed chlorinator at about 1000° C. to produce a vaporous (principally zirconium and silicon ...
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5032372 |
Dilute-phase chlorination procedure
An improved dilute phase chlorination procedure characterized by providing extremely finely divided oxygen-containing metallic material and a carbonaceous material co-milled together to a particle...
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4961911 |
Process for reducing carbon monoxide emissions from a fluidized bed titanium dioxide chlorinator
A process for reducing the amount of carbon monoxide emitted from a fluidized bed reactor for chlorinating titanium bearing material containing iron oxide comprising (a) feeding coke, titanium...
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4933154 |
Production of ZrO2 powder of very fine particle size
A ZrO2 powder of very fine particle size adapted especially for the making of high density ceramics is produced by chlorinating a zirconium source material, such as zircon sand, to produce crude...
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4923577 |
Electrochemical-metallothermic reduction of zirconium in molten salt solutions
This is a method of reducing zirconium chloride to a metal product by introducing zirconium chloride into a molten salt bath containing at least one alkali metal chloride and at least one alkaline...
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4913884 |
Uranium-preextraction in zirconium/hafnium separations process
This is an improvement to a process for making zirconium metal from uranium-containing zircon ore. The process being improved is of the type which utilizes a fluidized bed carbochlorination process...
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4865694 |
Electrochemical decomposition of complexes of zirconium or hafnium
This is an improved method for separating hafnium from zirconium of the type where a complex of zirconium and hafnium chlorides and phosphorus oxychloride is prepared from zirconium-hafnium...
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4854972 |
Nitrogen-free process for chloride-route TiO2 pigment manufacture
The invention is concerned with a substantially nitrogen-free process for chloride-route TiO2 pigment manufacture in which a TiO2 -containing feedstock is subjected to a fluidized-bed, high...
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4840774 |
Process for the production of zirconium tetrachloride from dissociated zircon
A process for the production of zirconium tetrachloride from dissociated zircon in which gaseous chlorine is passed through pellets consisting of ground dissociated zircon, carbon and a binder at a...
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4812149 |
Hot inert gas purging for filter blowback process
A filter cleaning process for filters for separating particulates from a hot gas stream using hollow, tubular filter elements. Blowback and hot purge gas systems provide for cleaning of the filter...
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4652434 |
Chlorination of ores containing alkali or alkaline earth values
The invention pertains to an entrained-downflow chlorination process of fine metalliferous ores particularly containing alkali and/or alkaline earth metals greater than about 0.3% by weight as the...
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4619815 |
Chlorination of iron-containing metaliferous material
The process is directed to a fluidized bed chlorination of iron containing metaliferous materials to simultaneously produce a quantity of titanium beneficiate and a quantity of titanium...
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4595573 |
Chlorinator furnace and method for producing tetrachloride of such metals as titanium and zirconium
A method for producing tetrachloride of a metal selected from the group consisting of titanium and zirconium comprising: providing a reaction chamber which is defined by a wall structure of...
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4540551 |
Two stage chlorination of titaniferous ore with FeCl3 reclamation
There is provided a multi stage process for nonselectively chlorinating a titaniferous ore containing iron to produce TiCl4. In this process a portion of the ore charge is subjected to conventional...
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4521385 |
Recovery of titanium values
Titanium and iron values are recovered from ores, concentrates and slags by effecting solid-state reduction and carburization to form titanium carbide and carburized iron, separation of the...
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4519988 |
Two stage chlorination of titaniferous ore
There is provided an improved process for chlorinating an iron-containing titaniferous ore, such as ilmenite which comprises dividing the ore charge into 2 parts. The first and major part is...
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4517163 |
Process for making titanium dioxide concentrates
The disclosure relates to a process for making titanium dioxide concentrates from material containing titanium oxide and iron oxides. More particularly, the titanium oxide-containing material is...
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4489045 |
Recovery of by-product calcium chloride from chlorination of titaniferous ores
A process for the recovery of calcium chloride produced in the conversion of metal chloride by-products of chlorination to hydrous metal oxides. The hydrous metal oxides and other by-products of...
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4487677 |
Electrolytic recovery system for obtaining titanium metal from its ore
An apparatus including a single electrolytic/reaction cell, for extraction of titanium sponge from rutile ore. Magnesium chloride is electrolytically separated into magnesium metal and chlorine gas...
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4460550 |
Process for production of titanium dioxide from titaniferrous ore
Titanium tetrachloride is produced from titanium ore and reductant suspended in molten salt by the passage of chlorine therethrough. The titanium tetrachloride is scrubbed by passage through at...
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4442076 |
Entrained downflow chlorination of fine titaniferous material
An entrained flow process for chlorinating fine iron-containing titaniferous powder with chlorine gas and/or organochlorides in the presence of fine porous coal-based reductant powder for obtaining...
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4442075 |
Titanium ore chlorination process using a molten salt
A process of chlorinating titanium ore suspended with carbonaceous reductant in molten salt by passage of chlorine therethrough. Titanium tetrachloride produced is purified of by-product metal...
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4440730 |
Chlorination of titanium ores using lignitic reactive carbons
There is provided an improved process for the chlorination of particulate titaniferous ores using a particulate reactive carbon in a fluidized bed. The particulate reactive carbon is lignite char.
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4435365 |
Process for producing titanium tetrachloride
A process for producing titanium tetrachloride in which iron-titanium ore is leached in hydrochloric acid to produce a solid phase comprising upgraded titanium-containing material, and a spent...
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4425310 |
Production of aluminum chlorides from bauxites and clays
At least a two stage chlorination system for the production of aluminum trichloride and aluminum monochloride wherein in the gas stream containing the highest percentages of aluminum chloride...
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4389391 |
Process for beneficiating titaniferous ores
An improved method of beneficiating ilmenite using two chlorinators in order to oxidize by-product iron chlorides to chlorine in the vapor phase and eliminate the necessity of separating the...
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4363789 |
Alumina production via aluminum chloride oxidation
A method for producing alumina from a material containing alumina values via a chlorination step which process comprises the steps of: (A) dehydrating the material, if necessary, at a temperature...
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4355007 |
Two stage chlorination process for aluminum value containing source
A two stage process is described for chlorinating aluminum value containing materials such as bauxite, clay, fly ash, etc. The process comprises the steps of:(A) dehydrating the material, if...
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4355008 |
Chlorination process
There is described a method for producing alumina from a material containing alumina values via a chlorination step which process comprises the steps of: (A) dehydrating the material, if necessary,...
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4343775 |
Entrained-flow chlorination of fine titaniferous materials
A flow process is described for the chlorination of titaniferous materials. The process utilizes a special microporous carbon characterized by having pores with a pore diameter of less than 20 A....
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4329322 |
Chlorination of titaniferous material using treated coal for vanadium removal
Vanadium impurities in chlorinated titaniferous materials are rendered easily removable by reacting said titaniferous materials with a high surface area carbon during the chlorination process. A...
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4327062 |
Process for producing chloride of elements of Group III, IV or V of Periodic Table
The chlorides of elements of Groups III, IV and V of the Periodic Table, such as, boron trichloride, silicon tetrachloride, zirconium tetrachloride and vanadium tetrachloride are prepared by...
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4310495 |
Low-temperature fluid-bed chlorination of titaniferous ore
A low temperature (less than 800° C.) process for chlorinating titaniferous material in a fluidized bed is disclosed. A porous carbon reductant having micropores with a pore diameter of less than ...
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4288414 |
Process for chlorinating clays and bauxite
A process for recovering aluminum from clays associated with coal or bauxite containing iron, siliceous material and titanium which comprises: (a) chlorinating the clay or bauxite in an oxidizing...
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