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Article
Nitric acid leaching of polymetallic middlings of concentration
Investigations into the nitric acid leaching of polymetallic middlings with the purpose of the maximal recovery of copper and zinc into the solution are performed. Using methods of mathematical planning of the...
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Article
Status of the organized recycling of cadmium-bearing secondary raw materials
The main methods being used in metallurgy to systematically recycle cadmium-bearing secondary raw materials are examined. Hydrometallurgical methods which use sequestering reagents that can be regenerated are ...
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Article
Technology for the hydrometallurgical processing of a complex multicomponent sulfide-based raw material
An analysis of the methods currently used for the metallurgical processing of polymetallic middlings from the beneficiation of sulfide ores shows that the oxidant which is the most promising for use as an agen...
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Article
Processing of technogenic lead-containing intermediates using complexing agent solutions
Methods are reviewed for processing technogenic lead-containing waste from nonferrous metallurgy enterprises. Use of different amine and phosphorus-containing complexing agents is considered. Process character...
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Article
Electroextraction of lead from a lead trilonate solution
Laboratory studies of the cathode process of the electroextraction of zinc from the trilonate electrolyte obtained after the purification of solutions after leaching lead cakes of zinc production are performed...
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Article
Innovative technology for recycling the negative segments of alkaline batteries using recoverable solvent
Technology is presented for recycling the negative segments of nickel-cadmium batteries based on the use of sodium ethyelenediaminetetraacetate (EDTA) as a leaching (complex-forming) reagent. Methods are propo...
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Article
Investigation of the selective leaching of cadmium from the active mass of alkali accumulators
During laboratory studies, the optimum conditions of leaching cadmium from the active mass of alkali accumulators in solutions of sodium ethylenediamine tetraacetate are established. At pH > 7, L: S = 7: 1, and t
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Article
Anodic oxidation of iron during the purification of sulfate zinc solutions
The anodic oxidation of iron in zinc solutions is carried out using a two-chamber electrolyzer separated by an anionite membrane. The positive effect that copper ions in the solution have on the rate and compl...
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Article
Removal of impurities from lead-trilonate solutions with regeneration of the solvent
Laboratory investigations of purification of trilonate solutions obtained during leaching of lead cakes of zinc production are carried out. Using the method of potentiometric titration, the conditions of forma...
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Article
Leaching of lead cakes of zinc production in a complexing solvent
The process of leaching of lead cakes of zinc production in a complexing solvent—trilon B, which makes it possible to selectively extract lead into the solution—is studied with the use of mathematical modeling of...
