Abstract: A method for conducting froth flotation using a collector which is primarily hydrocarbon in nature or is a mixture of hydrocarbons with certain oxygenates, the collectors being substantially free of polynuclear aromatics, sulfur and nitrogen.

Abstract: A method for conducting froth flotation using a collector which is primarily hydrocarbon in nature or is a mixture of hydrocarbons with certain oxygenates, the collectors being substantially free of polynuclear aromatics, sulfur and nitrogen.

Abstract: A method for conducting froth flotation using a collector which is primarily hydrocarbon in nature or is a mixture of hydrocarbons with certain oxygenates, the collectors being substantially free of polynuclear aromatics, sulfur and nitrogen.

Abstract: A method for conducting froth flotation using a collector which is primarily hydrocarbon in nature or is a mixture of hydrocarbons with certain oxygenates, the collectors being substantially free of polynuclear aromatics, sulfur and nitrogen.

Abstract: A method for conducting froth flotation using a collector which is primarily hydrocarbon in nature or is a mixture of hydrocarbons with certain oxygenates, the collectors being substantially free of polynuclear aromatics, sulfur and nitrogen.

Abstract: A process for growing crystals at an enhanced rate comprising providing a dispersion of a fluid medium and seed crystals of a metal oxide, introducing feed material comprising a metal oxide into the dispersion and maintaining a uniform mixture of the seed crystals, the feed material and the fluid medium, the feed material having an average crystal size less than the average crystal size of the seed crystals, the feed material being added in an amount and at a rate whereby the seed crystals grow, the feed material providing a soluble nutrient species for deposition of the said crystal to effect crystal growth, the mixture of seed crystals and feed material being treated under conditions which stimulate crystal growth for a period of time sufficient to obtain a desired quantity of a product comprising at least one grown crystal having an average crystal size greater than the average crystal size of the seed crystal.

Abstract: A process for producing mixed oxides containing an alumina species in which a mixture of a hydrated alumina having a specified surface area (average crystal size), a fluid medium and a compound having the formula M.sub.x A.sub.y wherein M is selected from the group consisting of metals, silicon, boron, arsenic and tellurium, A is selected from the group consisting of oxygen and anions, x is from 1 to 4 and y has a value satisfying said formula depending on the valence of M, is formed into a uniform sol, the sol is recovered from the liquid medium and dehydrated, and the dehydrated product is de-agglomerated to produce a mixed oxide having an average particle size of about 1 micron or less.

Abstract: A process for preparing a particulate metal oxide of small particle size wherein a combustible organometallic compound alone or in admixture with a combustible organic liquid carrier is introduced into a combustion zone and combusted in a combustion supporting gas to produce particles of metal oxide, the combustion being carried out under reaction conditions so as to effect calcination of the metal oxide particles prior to condensation of the particles in the bulk phase.

Abstract: A process for producing alumina wherein an aluminum trialkyl is reacted with a substantially water immiscible alcohol to produce an aluminum alkoxide and an alkane, the reaction between the aluminum trialkyl and the alcohol being conducted in an organic phase, the alkoxide being hydrolyzed in an aqueous phase which is in contact with the organic phase, the alumina formed by hydrolysis of the aluminum alkoxide being recovered from the aqueous phase.

Abstract: A process for the vapor phase production of alumina by introducing steam into the vapor space above a heated, liquid phase aluminum alkoxide in which the aluminum alkoxide is hydrolyzed in a heated reaction zone downstream from the liquid alkoxide and collected as a dry powder without the necessity for utilizing conventional drying processes.