Investigation of behavior of elemental sulfur in H2O-OH--CN- solutions

Тип публикации: статья из журнала

Год издания: 2009

Идентификатор DOI: 10.3103/S1067821209060030

Ключевые слова: elemental sulfur, cyanides, alkali solutions, dissolution, hydrometallurgy of gold, simplex-lattice design of the experiment, Alkali solutions, Cyanides, Dissolution, Elemental sulfur, Hydrometallurgy of gold, Simplex-lattice design of the experiment, Alkali solutions, Concentration of, Cyanidation, Elemental sulfur, Gold-recovery plant, Planning method, Simplex-lattice design, Solvent composition, Technological process, Cyanides, Experiments, Gold, Hydrometallurgy, Ions, Leaching, Mathematical models, Metallurgy, Solubility, Sorption, Sulfur, Dissolution, cyanide, dissolution, gold, hydrolysis, hydroxide, numerical model, solubility, sorption, sulfur

Аннотация: The processes of dissolution of elemental sulfur in S-H2O-OH--CN- systems are investigated. These processes simulate the technological processes of cyanidation and the sorption leaching of Au from the biocakes of gold recovery plants in the range of concentrations of the CN- ions of 0-0.02 mol/dm(3) and the range of concentrations of the OH- ions of 0-0.1 mol/dm(3). Using the simple-lattice planning method of the experiment, mathematical models and "solvent composition-amount of dissolved sulfur" diagrams are constructed for temperatures of 20, 30, and 40A degrees C. It is established that, at t = 20A degrees C, the strongest effect on the solubility of S in the mentioned solvents exerts the concentration of cyanides, while, at t = 30 and 40A degrees C, the larger contribution to an increase in transfer of S into the solution gives the OH- content. The role of hydrolysis that the CN- ion plays in increasing the solubility of sulfur in the studied systems is shown.

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Издание

Журнал: RUSSIAN JOURNAL OF NON-FERROUS METALS

Выпуск журнала: Vol. 50, Is. 6

Номера страниц: 582-588

ISSN журнала: 10678212

Место издания: NEW YORK

Издатель: ALLERTON PRESS INC

Авторы

  • Chubarov A.V. (Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Krasnoyarsk 660025, Russia; Res Ctr JSC Polyus, Krasnoyarsk 660061, Russia)
  • Maksimenko V.V. (Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Krasnoyarsk 660025, Russia)
  • Belousova N.V. (Res Ctr JSC Polyus, Krasnoyarsk 660061, Russia)

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