Matches 51 - 100 out of 201 < 1 2 3 4 5 >
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4594230 Recovery of cobalt  
A process is disclosed for recovering cobalt in a relatively pure form from an impure cobalt bearing material. The process involves digesting the material in hydrochloric acid to form a solution...
4587116 Process for treating chlorinated nitrogen-containing hydrocarbons  
A process is described for reacting chlorinated, nitrogen-containing hydrocarbons with metal oxides so as to convert essentially all of the carbon atoms to oxides of carbon. This process provides...
4582579 Method for preparing cupric ion-free cuprous chloride  
An improvement of the method for preparing cupric ion-free cuprous chloride powder in which copper metal is added to a highly acidified solution of cupric chloride to reduce the cupric ions to...
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...
4576812 Chlorination of copper, lead, zinc, iron, silver and gold  
This invention relates to a process for making the chloride of a metal from the sulfide of said metal in the absence of air and for a metal selected from copper, iron, lead, zinc, silver and gold....
4563338 Selective chlorination method for mixtures of metallic oxides of natural or synthetic origin  
A selective chlorination method of a mixture of simple or complex metallic oxides, comprising at least one of the elements to be used, iron, aluminum, titanium and silicon, as well as the...
4545964 Process for the preparation of porous products based on cobalt fluoride or lead fluoride  
A process for the preparation of porous products containing cobalt fluoride CoF 2 or lead fluoride PbF 2 , wherein it comprises thermally decomposing lead fluosilicate or cobalt fluosilicate.
4514372 Process of producing cobalt-containing solutions and salts  
Cobalt salts are produced by dissolving cobalt metal in hydrochloric acid containing a small amount of thiosulfate ions.
4500496 Process for purifying molybdenite concentrates  
An improved process is disclosed for the treatment of molybdenite concentrate to remove impurities, such as copper and lead therefrom. According to this process, ferrous chloride liquor is...
4485018 Process of clarifying water  
Process for clarifying water to coagulate and flocculate particles suspended therein, by introducing into the water an aqueous solution of ferric polychloride having a temperature of at least 85° C.
4461683 Method for separating iodine in solid form, from an acid mercury salt solution  
There is described a method for separating iodine in solid form, from an acid mercury salt solution, which comprises subjecting said iodine-containing mercury salt solution at a pH value between 2...
4457812 Critical solvent separations in inorganic systems  
A process for separating inorganic substances involving their abstraction from a mixture with near-supercritical inorganic fluids. One or more inorganic substances are abstracted and then...
4435379 Process for treating chlorinated hydrocarbons  
A process is described for reacting chlorinated hydrocarbons other than carbon tetrachloride with metal oxides so as to convert essentially all of the carbon atoms to oxides of carbon. This process...
4433049 Method for preparing a light-sensitive cuprous halide emulsion  
Disclosed is a method for preparing a light-sensitive cuprous halide emulsion which comprises reducing cupric ions by an ascorbic acid derivative represented by the general formula: ##STR1##...
4409198 Process for the production of copper (II) chloride from copper (II) oxychloride using tertiary amine hydrochlorides  
Copper(II) chloride is prepared from copper(II) oxychloride in a nonpolar solvent, preferably during oxychlorination. As the source of hydrogen chloride, the hydrochlorides of certain tertiary...
4402924 Preparation of high surface area metal fluorides and metal oxyfluorides, especially aluminum fluoride extrudates  
A method is described for the preparation of high surface area metal fluorides and metal oxyfluorides comprising reacting high surface area metal oxides with a fluorocarbon vapor wherein the...
4394366 Process for production of CoCl.sub.2 solution from cobaltic oxide-hydrate  
This invention is concerned with a process for dissolving oxidic trivalent cobalt compounds in hydrochloric acid while avoiding the generation of chlorine. It includes the following steps (a)...
4378245 Distillation process for separating silver and copper chlorides  
Purification of cuprous chloride is accomplished by distillation wherein cuprous chloride is recovered as the overhead product, and substantially all of the silver chloride and other impurities...
4370306 Process for separation of traces of gaseous contaminants from waste gases by chemical absorption  
In the separation of traces of halogens and sulfur from a halogen- and/or sulfur-containing gas stream wherein the gas stream is contacted with a wash liquid to absorb the halogens and sulfur, the...
4352787 Ultra-hard particles of carbon produced by reacting metal carbide with non-metal halide in hot melt system  
The production of ultra-hard particles composed substantially of carbon as the dominant element is taught. The ultra-hard particle comprises a covalently bonded lattice structure produced by...
4343781 Decomposition of 2KCl.CuCl to produce cuprous chloride and potassium chloride  
Cuprous chloride is produced from the complex salt, 2KCl.CuCl, obtained as a by-product in the copper industry where chalcopyrite is decomposed in the presence of potassium chloride, by a series of...
4341742 Cuprous chloride production from chalcopyrite  
A process is disclosed for producing cuprous chloride from chalcopyrite by means of a cupric chloride leach utilizing particular processing conditions in order to obtain relatively high cuprous...
4317800 Process for simultaneously processing of used metal and/or metal _scrap and scrap containing halogenated hydrocarbons  
A process for reducing environmental pollution resulting from disposal of waste containing halogenated hydrocarbons by simultaneous treatment with used metal and/or metal scrap at elevated...
4308239 Obtaining copper (I) chloride from ores with acetonitrile  
Cuprous (Copper (I)) chloride is an intermediate for the production of copper metal concentrates. A method of purifying copper salts and particularly cuprous chloride is disclosed which involves...
4275045 Method of extraction, trapping and storage of radioactive iodine contained in irradiated nuclear fuels  
After dissolving irradiated nuclear fuel in a nitric acid medium, the vapor produced by this dissolution and consisting of water, nitrogen oxides and iodine is passed into a condenser, then into a...
4259298 Recovery of chlorine values from iron chloride by-product in chlorination of aluminous materials  
The invention relates to a method of recovering the chlorine values from iron chloride obtained from the chlorination of an aluminous material containing iron oxide, such as bauxite. The method...
4258048 Substituted pyridine methyl esters of tetramethyl cyclopropane carboxylic acids and their use as insecticides  
Substituted pyridine methyl esters of tetramethylcyclopropane carboxylic acids and the optical isomers thereof are prepared which correspond to the formula: ##STR1## wherein n represents an integer...
4248851 Promoted oxidation of aqueous ferrous chloride solution  
This invention is directed to the oxidation of ferrous chloride in liquid aqueous solution, such as, waste HCl pickle liquor, to a solution containing ferric chloride, by intimately intermingling...
4244929 Recovery of chlorine values  
The invention relates to the recovery of chlorine values as ferric chloride from iron chloride dust which is obtained as a by-product from the chlorination of a titaniferous material containing...
4244935 Method of forming metal chlorides  
A method of forming the chloride of a metal-oxygen-containing substance, including the steps of coating particles of such substance with green carbon, i.e. carbon which contains substances more...
4243650 Heat and volatized salt recovery from reaction effluent  
A reaction effluent containing vaporized salt withdrawn from a reaction zone, such as a molten salt reaction zone, is contacted with solid particles to cool the gas and condense vaporized salt onto...
4242320 Reduction of ferric chloride  
The invention relates to a method for the reduction of ferric chloride to produce ferrous chloride. The method comprises using gaseous sulphur or a gaseous sulphur chloride in which the atomic...
4241038 Reduction of ferric chloride  
The invention relates to a method for the reduction of ferric chloride to produce ferrous chloride. The method involves using as the reducing agent sulphur monochloride optionally in combination...
4209501 Chlorides of lead, zinz, copper, silver and gold  
A process for forming a metal chloride of a metal or its compound comprising forming a liquid fused salt bath mixture of at least two metal chlorides with one of the chlorides being selected from...
4183899 Chlorination of ilmenite and the like  
Ferruginous titaniferous material is chlorinated with chlorine for producing a product stream of titanium chlorides and by-product metallic iron in a laminar flow process.
4182747 Process for preparation of anhydrous metallic chlorides from waste catalysts  
A process is disclosed for recovering metallic constituents of spent or waste catalysts containing metallic compounds fixed on an aluminous support. The process is particularly applicable for the...
4179492 Process for making rare earth metal chlorides  
A process for forming a metal chloride of a metal or its compound comprising forming a liquid fused salt bath mixture of at least two metal chlorides, the bath having the property of dissolving the...
4144056 Process for recovering nickel, cobalt and manganese from their oxide and silicate ores  
A process for recovering the metals manganese, nickel, and cobalt from their oxides and silicates in which the metal oxide or silicate is heated with ferric chloride in the absence of air and in...
4133933 Electrosensitive recording sheet with support containing cuprous iodide particles  
An electrosensitive recording sheet consists of an electroconductive material of cuprous iodide, an electrosensitive color forming material, a binder and a support. A color forms in the recording...
4130632 Process for the manufacture of trichlorosilane and silicon tetrachloride  
Trichlorosilane or silicon tetrachloride is prepared by reacting metallic uminum-containing silicon in a reaction zone with hydrogen chloride or chlorine at a temperature between about 260° and...
4118200 Process for desulfurizing coal  
The desulfurization of both inorganic and organic sulfur constituents of coal by treating the coal in a liquid fused salt bath in the presence of chlorine to react the sulfur containing...
4107267 Process for treating waste hydrochloric acid  
A process for regenerating waste acid, such as waste hydrochloric acid pickling liquor by producing aqueous hydrochloric acid of pickling concentration and generating iron oxide including that of...
4105747 Method for dehydrating metal chlorides  
A hydrated metal salt is dehydrated to its anhydrous form by dissolving the metal salt hydrate in an organic solvent; and contacting the solvent solution of metal salt hydrate with a molecular...
4100183 Process for preparing cuprous aluminum tetrahalide complexing agents  
Cuprous aluminum tetrahalide complexing agents are prepared from cuprous halide such as cuprous chloride contaminated with cupric halide by a method which reduces the cupric ion to the cuprous ion...
4100250 Selective precipitation of copper chlorides from aqueous solutions with unsaturated aliphatic hydrocarbons  
A process for the selective extraction of copper chlorides from aqueous solutions by forming a solid addition compound of cuprous chloride with an unsaturated aliphatic hydrocarbon having from 2 to...
4098875 Method for thermochemical production of hydrogen from water  
A method for efficient production of hydrogen by thermochemical decomposition of water by use of tri-iron tetraoxide and hydrogen bromide as main cyclic reaction media.
4083693 Apparatus for treating waste acids  
A system for regenerating waste acid, comprises (1) a concentrator for concentrating the waste liquor, (2) a reactor for reacting the concentrated liquor at a temperature below 1000° F. in the...
4083923 Process for the production of aluminum chloride and related products  
The present invention provides a process for the production of aluminum chloride and alumina of metallurgical grade purity, and valuable by-products from aluminous ores like clay, bauxites and...
4078002 Reduction of chemical compounds with 9-BBN  
9-Borabicyclo (3.3.1) noname (9-BBN), a relatively stable solid dialkylborane, can be used to reduce a wide variety of reducible chemical compounds, including both organic and inorganic compounds....
4070437 Process for the recovery of metal chlorides from jarosite sludges resulting from the sulphuric acid processing of ores  
In a process for the recovery of metal chlorides from jarosite in sludges which result from the sulphuric acid processing of ores, the sludge is treated with an aqueous solution of an alkaline...
Matches 51 - 100 out of 201 < 1 2 3 4 5 >