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Vol. 10 (2007 year), No. 4

Maslov A.A., Avsaragov Kh.B.
Treating of radioactive effluents by sorbents using minerals of the Kola region in static states

The author has studied the principle possibility and appropriateness of using alternate extraction reactants at extraction of cerium out of solutions. As such extraction reactants the cation-exchange extragents have been considered, to latter carboxylic acids and, in particular, naphthenic acid refer. It has been experimentally established that using of naphthenic acid as an extraction reactant (a cheaper reactant as compared to the one used now) permits to increase extraction of cerium up to 73.5 % and to diminish material costs.

(in Russian, стр.3, fig. 0, tables. 2, ref 7, Adobe PDF, Adobe PDF 0 Kb)

Vol. 11 (2008 year), No. 3

Zosin A.P., Priymak T.I., Avsaragov Kh.B., Koshkina L.B., Masloboev V.A.
The geo-cemented stone based on magnesium-ferrous slags of the nonferrous metallurgy – the resistant material for radioactive waste immobilization

The way of sorption clearing of large-capacity waste water of the nonferrous metallurgy enterprises from cations of Ni, Co, Cu has been proposed. A low-cost effective sorbent on the basis of a hardening mineral dispersion technology using the slag formed as a result of ore-thermal processing of sulphiric copper-nickel ores has been developed. The optimum conditions of synthesis have been revealed; the phase structure of reaction products and the sorption mechanism have been defined. The method of recycling of waste sorbents containing up to 5.0-5.5 weights % of nonferrous metals (Ni, Co, Cu) has been proposed. These waste sorbents can be used as raw material in ore-thermal furnaces. The degree of nickel extraction is 99.9 %.

(in Russian, стр.6, fig. 4, tables. 2, ref 5, Adobe PDF, Adobe PDF 0 Kb)