Processing double refractory gold-arsenic-bearing concentrates by direct reductive melting

Ainur Seitkan; Simon A.T. Redfern

doi:10.1016/j.mineng.2016.08.017

Processing double refractory gold-arsenic-bearing concentrates by direct reductive melting

Ainur Seitkan^*, Simon A.T. Redfern

^*Corresponding author for this work

University of Cambridge

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Iron arsenides may be the key to extraction of gold from existing refractory ores such as that at Bakyrchik, Kazakhstan, an ore body containing an estimated £8.5 billion reserve of gold. Gold is not extractable without significant ecological contamination from the associate arsenopyrite mineralisation. A new method for gold recovery from refractory gold-arsenic-bearing materials, based on direct reductive melting (DRM) of the concentrate has been developed, which locks As into relatively benign iron arsenide phases, whilst gold is extracted into lead alloy. The method has been filed as a patent with the Patent Office of the Republic of Kazakhstan.

Original language	English
Pages (from-to)	286-302
Number of pages	17
Journal	Minerals Engineering
Volume	98
DOIs	https://doi.org/10.1016/j.mineng.2016.08.017
Publication status	Published - Nov 1 2016
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd

ASJC Scopus Subject Areas

Control and Systems Engineering
General Chemistry
Geotechnical Engineering and Engineering Geology
Mechanical Engineering

Keywords

Bakyrchik
Direct reductive melting
Double refractory gold-arsenic-bearing concentrate
Process optimisation
Thermodynamic modelling

Access to Document

10.1016/j.mineng.2016.08.017

Cite this

@article{ab24643d615d4a9dba8e0b984f807d27,

title = "Processing double refractory gold-arsenic-bearing concentrates by direct reductive melting",

abstract = "Iron arsenides may be the key to extraction of gold from existing refractory ores such as that at Bakyrchik, Kazakhstan, an ore body containing an estimated £8.5 billion reserve of gold. Gold is not extractable without significant ecological contamination from the associate arsenopyrite mineralisation. A new method for gold recovery from refractory gold-arsenic-bearing materials, based on direct reductive melting (DRM) of the concentrate has been developed, which locks As into relatively benign iron arsenide phases, whilst gold is extracted into lead alloy. The method has been filed as a patent with the Patent Office of the Republic of Kazakhstan.",

keywords = "Bakyrchik, Direct reductive melting, Double refractory gold-arsenic-bearing concentrate, Process optimisation, Thermodynamic modelling",

author = "Ainur Seitkan and Redfern, {Simon A.T.}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2016",

month = nov,

day = "1",

doi = "10.1016/j.mineng.2016.08.017",

language = "English",

volume = "98",

pages = "286--302",

journal = "Minerals Engineering",

issn = "0892-6875",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Processing double refractory gold-arsenic-bearing concentrates by direct reductive melting

AU - Seitkan, Ainur

AU - Redfern, Simon A.T.

PY - 2016/11/1

Y1 - 2016/11/1

N2 - Iron arsenides may be the key to extraction of gold from existing refractory ores such as that at Bakyrchik, Kazakhstan, an ore body containing an estimated £8.5 billion reserve of gold. Gold is not extractable without significant ecological contamination from the associate arsenopyrite mineralisation. A new method for gold recovery from refractory gold-arsenic-bearing materials, based on direct reductive melting (DRM) of the concentrate has been developed, which locks As into relatively benign iron arsenide phases, whilst gold is extracted into lead alloy. The method has been filed as a patent with the Patent Office of the Republic of Kazakhstan.

AB - Iron arsenides may be the key to extraction of gold from existing refractory ores such as that at Bakyrchik, Kazakhstan, an ore body containing an estimated £8.5 billion reserve of gold. Gold is not extractable without significant ecological contamination from the associate arsenopyrite mineralisation. A new method for gold recovery from refractory gold-arsenic-bearing materials, based on direct reductive melting (DRM) of the concentrate has been developed, which locks As into relatively benign iron arsenide phases, whilst gold is extracted into lead alloy. The method has been filed as a patent with the Patent Office of the Republic of Kazakhstan.

KW - Bakyrchik

KW - Direct reductive melting

KW - Double refractory gold-arsenic-bearing concentrate

KW - Process optimisation

KW - Thermodynamic modelling

UR - http://www.scopus.com/inward/record.url?scp=84988026263&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84988026263&partnerID=8YFLogxK

U2 - 10.1016/j.mineng.2016.08.017

DO - 10.1016/j.mineng.2016.08.017

M3 - Article

AN - SCOPUS:84988026263

SN - 0892-6875

VL - 98

SP - 286

EP - 302

JO - Minerals Engineering

JF - Minerals Engineering

ER -

Processing double refractory gold-arsenic-bearing concentrates by direct reductive melting

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

Access to Document

Other files and links

Fingerprint

Cite this