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Vol 202
Pages:
69
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Researches on improvement of gold leaching process by means of mass transfer optimization in gas-liquid reactors

Authors:
D. V. Gradov1
V. M. Sizyakov2
Ilkka Turunen3
Arto Laari4
About authors
  • 1 — National Mineral Resources University (Mining University)
  • 2 — National Mineral Resources University (Mining University)
  • 3 — Lappeenranta University of Technology
  • 4 — Lappeenranta University of Technology
Date submitted:
2012-09-21
Date accepted:
2012-11-02
Date published:
2013-03-01

Abstract

Modern metallurgy pays more attention to chemical processes safety of staff and nature environment. One of the most hazardous branches in metallurgy is gold ores cyanidation. Researches on possibility to avoid cyanide leaching are carrying out during last thirty years. Cyanide competitors are thiosulphate and thiourea solvers. Within international  cooperation  between National Mineral Resources University and Lappeenranta University of Technology researches are devoted to tiosulphate leaching improvement. Main efforts  are  forwarded  on  process chemistry, however mass transfer processes of heterogenic  systems  are  important  as well. Therefore their optimization is planned to achieve by means of computer modeling based on particle image velocimetry.

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References

  1. Доброхотов Г.Н. Гидрометаллургические процессы: Учеб. пособие. Л., 1976.
  2. Наумчик А.Н. Аппаратура для выщелачивания и разделения пульпы в гидрометаллургии. Л., 1984.

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