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8691167 Process for controlling carbonyl sulfide produced during chlorination of ores  
The present invention provides for a process for handling carbonyl sulfide waste and waste metal halides produced in industrial processes and, more particularly chlorination processes. The process...
8460624 Process and plant for producing metal oxide from metal salts  
A process for producing metal oxide from a metal salt includes supplying a first part of the metal salt to a hydrate drier so as to indirectly heat the first part of the metal salt in the hydrate...
8313715 Process and plant for producing metal oxide from metal salts  
A process for producing metal oxide from metal salts includes cleaning a metal salt in a filter. After cleaning, the metal salt is dried in a drying apparatus. Steam is formed in the drying...
7931886 Agglomeration of titania  
According to the present invention there is provided a process for the agglomeration of titania slag particles comprising providing titania slag at a d50 particle size of below 106 μm; mixing the...
7618601 Process for enrichment of anatase mechanical concentrates in order to obtain synthetic rutile with low contents of rare earth and radioactive elements  
A process for the enrichment of anatase mechanical concentrates, in order to obtain synthetic rutile with low contents of rare earth and radioactive elements, comprising the steps of: calcination...
7588741 Cyclical vacuum chlorination processes, including lithium extraction  
Cyclical batch processes for halogenation, such as chlorination, of minerals in a fixed bed using a plurality of cycles which include the steps of at least partially evacuating the bed, charging...
7571814 Method for separating metal values by exposing to microwave/millimeter wave energy  
Methods and apparatuses for separating metal values, such as nickel and nickel compounds, from mineral ores, including lateritic ores are disclosed. The method includes providing a mixture of...
7572418 Process to obtain titanium concentrates with high contents of TiO2 and low contents of radionuclide elements from anatase mechanical concentrates  
A process for production of titanium concentrate with low contents of radionuclide elements from anatase mechanical concentrates. The process involves calcination in air and reduction with...
6399033 Process for increasing the yield in the manufacture of titanium dioxide by the chloride process  
An improvement to the chloride process of making titanium dioxide. By recycling some of the cyclone dust, the yield in the chlorination of titanium-containing raw materials can be increased. In...
5968460 Process for injecting particulate material into a fluidized bed reactor  
The present invention is a process for feeding particulate material to a fluidized bed reactor operated at greater than atmospheric through a standpipe wherein the ratio of the absolute pressure...
5830420 Method to upgrade titania slag and resulting product  
A method is disclosed including: (a) sizing a titania slag to a particle size range of from 75 microns to 850 microns; (b) oxidizing the sized titania slag by contacting the sized titania slag...
5744108 Process for the thermal treatment of titanium dioxide in a circulating fluidized bed and the use thereof  
The present invention relates to a process for the production of titanium dioxide pigments and the use thereof.
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...
5618331 Vapor phase fluidized bed sulfation of titaniferous materials  
An economic, non-polluting vapor-phase system of extracting titanium values from titanium ore or slag comprises solubilizing titanium (in ore or slag) with sulfuric acid to form titanyl sulfate,...
5585078 Process for reducing carbon monoxide and carbonyl sulfide emissions from a fluidized bed titanium dioxide chlorinator  
In a process for chlorinating titanium containing material in a fluidized bed reactor which evolves gaseous material including CO, COS, and TiCl4, the improvement comprising introducing oxygen...
5490976 Continuous ore reaction process by fluidizing  
In a continuous process for reacting particulate ore with a liquid reagent in a counter-current vertical column the improvement comprising: (a) providing an upper and lower chamber for the...
5427749 Production of synthetic rutile  
The specification describes a process for producing synthetic rutile from a titaniferous ore or concentrate. The process involves three basic steps which are reduction, removal or iron by leaching...
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...
5389355 Method of preparing a synthetic rutile from a titaniferous slag containing alkaline earth metals  
Synthetic rutile is prepared from titaniferous slags containing alkaline-earth metal impurities, such as magnesium oxide, by a method comprising contacting the slag with chlorine at a temperature...
5334362 Process for the production of disposable products from metal chlorides in a titanium dioxide chloride process  
In order to treat metal chlorides obtained in the form of dust collector solids in the production of titanium dioxide by the chloride process, the inert constituents, especially particulate coke,...
5320815 Fluidized bed process  
In a fluidized bed process having a bed of fluidized particulate material which is susceptible to having at least some of the particulate material being entrained in the gases exiting the bed, the...
5225178 Extraction and purification of titanium products from titanium bearing minerals  
Titaniferous solid containing titanium (IV) oxide, for example ilmenite, is reacted with silicon tetrafluoride gas at 800° C. or more and at a pressure of at least 1 atmosphere to produce titanium...
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...
5147619 Nickel recovery using a fluidized bed process  
A process for the recovery of nickel catalyst metal from a top portion of a fluidized bed consists essentially of the steps of providing a sludge material including spent catalyst including...
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...
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...
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...
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...
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...
4629607 Process of producing synthetic rutile from titaniferous product having a high reduced titanium oxide content  
A process for increasing the amount of titanium dioxide in a titaniferous slag includes the rapid preheating of the slag in gases substantially void of free oxygen.
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...
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...
4576636 Process for beneficiating oxidic ores  
A process for the beneficiation of an iron-containing material is carried out by first chlorinating the iron-containing material. Oxidation of ferrous chloride in the effluent gas from the...
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...
4521384 Process for the production of nearly aluminium chloride-free titanium tetrachloride from titaniferous raw materials containing aluminum compounds  
Process for the production of a nearly aluminum chloride-free titanium tetrachloride from titaniferous raw materials containing larger quantities of aluminum compounds in a fluid bed with the...
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...
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.
4399118 Process of recovering anhydrous zirconium tetrafluoride  
An improved process for the recovery of substantially anhydrous zirconium tetrafluoride from an aqueous solution of hydrofluoric acid and zirconium fluoride is disclosed wherein the aqueous...
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...
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...
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...
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...
4332615 Process for beneficiating a titaniferous ore  
Titaniferous ore is beneficiated to essentially pure titanium dioxide use in the production of titanium dioxide pigments by continuously chlorinating, in the presence of carbon and at high...
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...
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...
4279871 Process for treating chlorinated titaniferous material to remove vanadium  
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...
4179489 Chlorination of iron-containing materials  
A process for the chlorination of a material containing iron and titanium chemically combined with oxygen, comprising feeding the material to be chlorinated, in particulate solid form, into a...
4150093 Method for concentrating heavy minerals in the solids tailings from hot water extraction of tar sands  
An oily mass of solids tailings is derived from flotation of bitumen during hot water extraction of bituminous sands, and subsequent separation of most of the bitumen from associated solids. This...
4097574 Process for producing a synthetic rutile from ilmentite  
Synthetic rutile is made from ilmenite by pre-oxidizing it, reducing it in a fluid bed, thereafter aeration leaching it, optionally acid leaching, and drying.
4085189 Process for recycle beneficiation of titaniferous ores  
An improved process for beneficiating titaniferous ore to produce essentially iron-free titanium dioxide wherein a fluidized mixture of ore and a recycled iron-containing partially chlorinated...

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