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中南大学学报(英文版)

Journal of Central South University

Vol. 23    No. 4    April 2016

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Effect of copper slag recovery on hydrometallurgicalcut-off grades considering environmental aspects
AFSHIN AKBARI1, ESMAEIL RAHIMI2

1. Department of Mining Engineering, Islamic Azad University-Central Tehran Branch, Tehran, Iran;
2. Department of Mining Engineering, Islamic Azad University-South Tehran Branch, Tehran, Iran

Abstract:Determining the hydrometallurgical cut-off grades specifies the destination of low grade materials and this is subjected to more benefits in mining. Copper production rate is considered as one of the fundamental issues in hydrometallurgical cut-off grades determination. Slags are remarked as one of the main sources of copper. It is not only regarded as a waste but also identified as another resource extracting base metals. Slags are characterized by copper high grade. Thus, slag copper recovery can be led to different cut-off grades and net present value (NPV).The current research scrutinizes the effect of slag recovery by both flotation and hydrometallurgical methods on the hydrometallurgical cut-off grades. For this purpose, the optimum cut-off grade algorithms of hydrometallurgical methods are developed by considering associated environmental parameters, incomes and also the costs. Then, their optimum amounts are calculated with NPV maximization as an objective function.The results indicate that considering slag copper recovery in the hydrometallurgical cut-off grade algorithms reduces the environmental costs caused by slag dumping and leads to more NPV by 9%.

 

Key words: hydrometallurgy; cut-off grades; low grade materials; waste; floatation; slag; copper recovery; environmental parameters; slag dumping; NPV maximization

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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