Abstract: Hydrogen is thermochemically produced from water in a cycle wherein a first reaction produces hydrogen iodide and H.sub.2 SO.sub.4 by the reaction of iodine, sulfur dioxide and water under conditions which cause two distinct aqueous phases to be formed, i.e., a lighter sulfuric acid-bearing phase and a heavier hydrogen iodide-bearing phase. After separation of the two phases, the heavier phase containing most of the hydrogen iodide is treated, e.g., at a high temperature, to decompose the hydrogen iodide and recover hydrogen and iodine. The H.sub.2 SO.sub.4 is pyrolyzed to recover sulfur dioxide and produce oxygen.

Abstract: Ammonium fluoride is converted into a bifluoride by reaction with KF to form KF.HF, converting the latter to NaF.HF and heating said sodium bifluoride to form a solid product comprising NaF.

Abstract: A method of beneficiating kaolin clay by the addition of non-dispersing neutral salts to assist in the removal of discolored impurities, such as titanium and iron bearing minerals from a clay slurry. This process is capable of producing clays having a brightness in the 90- 95 range.

Abstract: A process of reacting finely divided material in a fluidized bed supported by a circular grate in relative circular motion with regard to a cell enclosing an auxiliary bed which has a bottom in free communication with the main fluidized bed and which is in hydrostatic equilibrium with the latter, whereby slag settled on the grate is sorted and extracted.

Abstract: A strengthened creep resistant ferritic iron alloy is provided by alloying the iron with two or more alloying metals of the type that form an intermediate Laves phase in the alloy having the composition Fe.sub.2 X, where X is the alloying metal. One of the alloying metals comprises one to five weight percent of tantalum and/or columbium while the other metal comprises one to eight weight percent of molybdenum and/or tungsten. The total of the Laves phase forming alloying metals is no more than ten weight percent in excess of that necessary to react with interstitial elements that may be added to the alloy.

Abstract: Alkali metal chlorites are produced by the reaction of chlorine dioxide with an alkali metal amalgam in a reaction mixture where the pH is maintained at from about 9.5 to about 11.5 by providing an excess of the alkali metal to the chlorine dioxide of at least 10 mole percent.Alkali metal chlorites obtained by this process are free of insoluble mercury and have reduced concentrations of soluble mercury as a contaminant.

Abstract: Chlorine dioxide and chlorine are produced by reduction of sodium chlorate with chloride ions in an aqueous acid medium having a total acid normality of 2 to 4.8 normal. The reaction medium is maintained at its boiling point under a subatmospheric pressure to provide steam dilution of the chlorine dioxide and chlorine and anhydrous neutral sodium sulphate is deposited therefrom. Chlorine dioxide is recovered as an aqueous solution containing some dissolved chlorine while the bulk of the chlorine is recovered in gaseous form.

Abstract: Chlorine dioxide is produced in a continuous process by reaction of sodium chlorate and hydrochloric acid. The reaction medium is maintained at its boiling point under subatmospheric pressure and the resulting steam is used to dilute the chlorine dioxide and chlorine and remove the same from the reaction zone. Sodium chloride is deposited from the reaction medium in the reaction zone. The reaction medium also contains buffering anions and the actual hydrogen ion concentration of the reaction medium is maintained in the range of about 0.05 to 0.3 normal to maintain an economic production rate for the chlorine dioxide.

Abstract: 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 product fraction is contacted with chlorine in a reactor maintained under reducing conditions, at temperatures of 700.degree. to 1150.degree. C. to convert iron oxide in the ore to iron chloride vapor which is removed from the reaction mixture. A quantity of the reaction bed which is partially chlorinated is removed from the reactor, cooled and separated into an essentially pure titanium dioxide fraction and a partially chlorinated iron-containing fraction. The iron-containing fraction is mixed with fresh ore and recycled to the reactor for further processing. The titanium dioxide product is useful as a starting material for the preparation of titanium dioxide pigment and is useful as a coating for a welding rod.

Abstract: A molten mixture containing magnesium oxide, magnesium chloride and a reducing agent is chlorinated in a furnace having a refractory lining, at least a portion of which adjacent the surface of the molten mixture therein is formed from a nitride-based refractory.

Abstract: A process for removing chloride impurities from TiO.sub.2 by injecting a gas selected from steam, air, nitrogen, or a mixture thereof, at a sonic or a supersonic velocity, a pressure of about 25-600 psi, and a temperature of about 140.degree.-650.degree. C., into the TiO.sub.2 to disperse it, and then separating the TiO.sub.2 from the gas and chlorides.

Abstract: An improved process for the production of aluminum chloride from coked alumina and chlorine comprises providing a bed of coked alumina in a reaction vessel and introducing gaseous chlorine thereto in an amount sufficient to fluidize the bed, at least a portion of the vessel having a nitride-based refractory lining especially adjacent and bounding the lower part of the fluidized bed. Aluminum chloride formed is recovered as a gaseous effluent emmanating from the bed.

Abstract: Alkali and alkaline earth metal bromides may be prepared by reacting a basic compound of an alkali or alkaline earth metal with a reducing agent in the presence of water and thereafter adding thereto stepwise alternate incremental portions of bromine and the basic compound while maintaining the pH less than about 7.0.

Abstract: Silocoformic acid is reacted chemically with hydrogen cyanide to produce silicoformic cyanide and silicoformic dicyanide.

Abstract: A process for preparing very high purity anhydrous hydrogen fluoride by contacting anhydrous hydrogen fluoride with at least 2.3% by weight of persulfuric acid based on the anhydrous hydrogen fluoride or at least 0.7% by weight of hydrogen peroxide based on the anhydrous hydrogen fluoride at ambient temperature and either at least 0.6% by weight of methanol based on the anhydrous hydrogen fluoride or at least one mole of sulfuric acid per mole of hydrogen peroxide at a temperature of from 0.degree. to 75.degree. C and distilling the resulting mixture to recover very high purity anhydrous hydrogen fluoride.

Abstract: A process, which may be continuous, for preparation of sulfur fluorides by reacting a sulfur chloride component with a fluorine containing component selected from the group consisting of nitrosyl fluoride and nitrosyl fluoride-hydrogen fluoride complex.

Abstract: This invention relates to a process for removing hydrogen chloride, chlorine, chlorides, oxychlorides and metal chlorides from a beneficiate produced by contacting a titaniferous ore with chlorine at high temperatures preferably in the presence of carbon wherein the beneficiate mixed with carbon is contacted at temperatures of about 1000.degree. C. with steam, moist air or moist inert gas. The beneficiate which is essentially titanium dioxide is useful as a starting material for the manufacture of titanium dioxide pigments.

Abstract: The efficiency of the Solvay chlorine dioxide producing process is enhanced by the use of a high total acid normality and a single vessel generator-evaporator-crystallizer.

Abstract: Multicourse liner construction for a fluidized bed reaction chamber for the chlorination of alumina bearing material including a reaction-chamber-defining inner course of essentially non-reactive carbon, an outer course of heat insulating refractory material, and an intermediate course of high density and essentially non-reactive material to minimize undesired flow of reactant chlorine externally of said reaction chamber.

Abstract: This invention relates to reactions of beta platinum chloride with gaseous ammonia to yield metallic platinum useful in catalysis and other operations and also complexes of beta platinum chloride and ammonia, which complexes are considered to be new compositions and which are contemplated as being useful in cancer research.