Impregnated type sorbents based on benzo-15-crown-5 for gold(III) extraction from hydrochloric solutions

Russian Chemical Bulletin - A series of sorbents based on benzo-15-crown-5, various supports (styrene-divinylbenzene LPS-500, hydrophobized silica gel), and diluents (octan-1-ol, nitrobenzene,...     

Specific Features of Chemical Interactions in Atmospheric Purification of a Nickel-Cobalt Solution To Remove Copper

Atmospheric purification of a nickel-cobalt solution to remove copper with a high-copper converter matte was studied. The structural and textural characteristics and the phase and chemical composition of the high-copper converter matte and of the solid residue remaining after atmospheric copper removal were examined. The mechanism of copper precipitation and leaching-out of elements belonging to the iron triad was determined, and the extents of the main chemical reactions were calculated.__________Translated from Zhurnal Prikladnoi Khimii, Vol. 78, No. 5, 2005, pp. 705–711.Original Russian Text Copyright © 2005 by Vydysh, Naftal’, Petrov, Batsunova.     

Specific Features of Chemical Interactions in Double-Stage Leaching of a Solid Target Product Formed in Processing of High-Copper Converter Matte

Oxidative leaching of a solid product of copper refining was studied in a laboratory, with autoclave oxidation replaced with that in the atmosphere. The extent of the chemical reactions that occur in atmospheric oxidative leaching and autoclave refining in the technology of sulfate leaching of high-copper converter matte was determined.