Abstract: Naphthenohydroxamic acid is prepared by reaction at 25.degree.C to 30.degree.C, equimolar quantities ofA. an ester of naphthenic acid,B. hydroxylamine dissolved in an alcohol/water/alkali metal sulfate slurry wherein the water content of the slurry is insufficient to hydrolyze the ester during conversion to naphthenohydroxamic acid, andC. an alkali metal hydroxide dissolved in alcohol.Naphthenohydroxamic acid is useful as a chelating agent in hydrometallurgy to recover metal values from dilute solution.
Abstract: Metals are alloyed into aluminum using a solid compact comprised of particles containing a high concentration of the metal to be added. The compacts are prepared by blending finely divided particles of the metal containing material with a salt fluxing agent, then compacting the mixture into a readily useable form such as a pellet. The resultant pellet provides rapid dissolution of the alloying constituent in the aluminum whether cold charged to the furnace or added to a molten bath over a wide range of bath temperatures.
Abstract: Leather treating compositions are prepared which comprise condensed or polymaric alkyl phenol phosphates generally and more particularly an alkylphenol-polyphenol condensate subsequently alkoxylated and phosphated. These compositions may be utilized for leather processing, and specifically for: retanning, lubricating, and imparting water resistance to chrome and/or mineral tanned leather. Additionally, these comprositions may be used to effect modifications of base mineral tannages for the purpose of dyeing, bleaching, and fatliquoring leather.
Abstract: The tendency for methyl chloroform to decompose in the presence of metals, particularly aluminum, is inhibited by a stabilizer mixture comprising an epoxide, a nitroalkane, trioxane and either propylene glycol mono-methyl ether, dioxepane or a mixture thereof.
Abstract: Brine coming to the earth's surface can contain substances other than salt in water; occasionally of particular interest is gas contained in the brine, especially natural gas or methane or ethane. As the brine reaches the surface of the earth, the presence of this gas is visibly apparent and gives the brine a cloudy appearance. This gas is typically well dispersed through the brine initially as very minute incipient gas bubbles that will accumulate and separate from the brine, given sufficient time. A method is herein provided for quickly and efficiently clarifying the brine by passing the cloudy brine through a filter zone providing a pressure drop across the zone of greater than about 20 p.s.i.g.
Abstract: Hot reduced manganese ore is cooled by blowing air through a layer of ore at velocities greater than 1 meter per second. The use of an inert cooling gas is unnecessary, and air reoxidation of the ore does not occur in the process.