Abstract: Disclosed herein are a method of reductively bleaching a mineral slurry comprising adding in the mineral slurry an effective amount of a formamidine sulfinic acid (FAS) and an effective amount of a borohydride to reductively bleach the mineral slurry, compositions comprising a mineral slurry, a FAS, and a borohydride, and final products comprising a mineral obtained by the method disclosed herein.

Abstract: A process for the percolation leaching of minerals from a mineral-beating ore comprises agglomerating the mineral-bearing ore with an agglomerating agent of a cationic block copolymer having a polymeric segment and a block containing an ammonium cation optionally with a block derived from an acrylamide monomer, forming the ore/agglomerating agent mixture into a heap, and leaching the heap by percolation with a leaching solution for subsequent recovery of the minerals at an acidic pH.

Abstract: Agglomerating agent and method for use in heap leaching of mineral bearing ores. Cationic polymers alone or in combination with cement or lime are highly effective agglomerating agents in acidic or alkaline leaching operations. The cationic polymers are preferably graft copolymers, block copolymers or linear copolymers of acrylamide and diallyl dimethyl ammonium chloride.

Abstract: The heat from garbage upon incineration and solar heat can be effectively used to make sterilized hot water economically. A sterilized hot-water generator is provided with upper, intermediate and lower tanks in communication with each other. The lower tank includes a combustion chamber which is in communication with heating chambers housed centrally within the upper and intermediate tanks. A solar heat hot-water maker is attached to the front side of the sterilized hot-water generator. A sterilizer is located through the heating chambers in the upper and intermediate tanks to introduce the hot water in the upper tank into an associated sterilizing chamber for sterilization by heating. A fume removing tank is provided to dissolve, in water, fumes generated during combustion. Exhaust gases leaving the fume removing tank are fed to a reducing tank where they are reduced to oxygen, by plants, for example. The oxygen is then released into the atmosphere.

Abstract: Hydrogen sulphide is scavenged from a feedstock comprising crude oil and hydrogen sulphide by adding a compound of general formula ##STR1## to the feedstock. R is an alkyl group containing 1 to 18 carbon atoms, an aryl group, or an alkyl aryl group wherein the alkyl moiety contains 1 to 18 carbon atoms and L is a leaving group.Preferred scavengers include acetic anhydride and triacetamide.

Abstract: This invention relates to glass-ceramic packages for integrated circuits containing multi-layer, interconnected thick film wiring patterns obtained by co-sintering a glass-ceramic composite and copper, silver, palladium or gold based conductors at temperatures not exceeding about 1000.degree. C. The dielectric systems disclosed herein contains composites of borosilicate glasses and crystalline fillers which are fabricated by either mixing glass frit and the filler or by a sol-gel coating process.

Abstract: A body of volatile, inorganic, normally liquid chemical which reacts with water, such as liquid sulfur trioxide, is treated to suppress the evolution of noxious acidic vapors therefrom to the atmosphere by applying to the exposed surface of said liquid body a treating agent consisting essentially of a fluorinated aliphatic liquid thickened with a thickening agent, such as fumed silica, to increase the viscosity thereof and render it relatively immobile and reduce the rate of flow of said vapors from said liquid body.