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Abstract <p>Studies were conducted on gold extraction from ore of a deposit in Tajikistan using cyanide and thiourea. Thiourea leaching was found to involve decomposition of the solvent, which increased its consumption and caused passivation of the gold surface by elemental sulfur, leading to a low extraction rate. The decrease in gold extraction with increasing thiourea leaching time was attributed to resorption of the gold complex by sorption-active minerals. Cyanidation achieved 98.1% gold recovery, whereas thiourea leaching gave 78.1%.</p>

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Comparative Studies on Gold Extraction from Ores Using Cyanide and Thiourea

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • I. R. Boboev,
  • R. S. Sel’nitsyn,
  • M. Musofirzoda

摘要

Abstract

Studies were conducted on gold extraction from ore of a deposit in Tajikistan using cyanide and thiourea. Thiourea leaching was found to involve decomposition of the solvent, which increased its consumption and caused passivation of the gold surface by elemental sulfur, leading to a low extraction rate. The decrease in gold extraction with increasing thiourea leaching time was attributed to resorption of the gold complex by sorption-active minerals. Cyanidation achieved 98.1% gold recovery, whereas thiourea leaching gave 78.1%.