scholarly journals Fundamentals of partial pressure oxidation of gold bearing sulphide minerals

2020 ◽  
Author(s):  
◽  
Ambrosia Ivana
Keyword(s):  
Partial Pressure ◽  
Pressure Oxidation ◽  
Sulphide Minerals ◽  
Gold Bearing

scholarly journals Oxidation of pyrite: Consequences and significance

2002 ◽  
Vol 56 (7-8) ◽  
pp. 299-316 ◽  
Author(s):  
Mile Dimitrijevic ◽  
Milan Antonijevic ◽  
Valentina Dimitrijevic
Keyword(s):  
Pyrite Oxidation ◽  
Bacterial Oxidation ◽  
Pressure Oxidation ◽  
Sulphide Minerals ◽  
Electrochemical Processes ◽  
Refractory Gold ◽  
Points Of View ◽  
Galvanic Interaction ◽  
Spontaneous Oxidation ◽  
Gold Bearing

This paper presents the most important studies on the oxidation of pyrite particularly in aqueous solutions. The consequences of pyrite oxidation was examined, as well as its importance, from both the technical-technological and environmental points of view. The oxidation of pyrite was considered in two parts. The spontaneous oxidation of pyrite in nature was described in the first part, with this part comprising pyrite oxidation in deposits depots and mines. It is explained how way natural electrochemical processes lead to the decomposition of pyrite and other minerals associated with pyrite. The oxidation of pyrite occurring during technological processes such as grinding, flotation and leaching, was shown in the second part. Particular emphasis was placed on the oxidation of pyrite during leaching. This part includes the leaching of sulphide and oxide ores, the leaching of pyrite coal and the leaching of refractory gold-bearing ores (pressure oxidation, bacterial oxidation, oxidation by means of strong oxidants and the electrolysis of pyrite suspensions). Various mechanisms of pyrite oxidation and of the galvanic interaction of pyrite with other sulphide minerals are shown.

Measurement of reaction enthalpy during pressure oxidation of sulphide minerals

2009 ◽  
Vol 96 (1) ◽  
pp. 117-124 ◽  
Author(s):  
I. Bylina ◽  
L. Trevani ◽  
S. C. Mojumdar ◽  
P. Tremaine ◽  
V. G. Papangelakis
Keyword(s):  
Reaction Enthalpy ◽  
Pressure Oxidation ◽  
Sulphide Minerals

Pressure oxidation of double refractory gold bearing sulphide Concentrates

2019 ◽  
pp. 55-66
Author(s):  
Ya. M. Shneerson ◽  
◽  
L. V. Chugaev ◽  
Keyword(s):  
Pressure Oxidation ◽  
Refractory Gold ◽  
Gold Bearing

scholarly journals Pressure oxidation of refractory gold-bearing concentrates using halogen-containing solvents and adsorbent

2015 ◽  
pp. 29-33
Author(s):  
A. V. Boldyrev ◽  
◽  
S. V. Balikov ◽  
A. V. Bogorodskiy ◽  
Yu. E. Emelyanov ◽  
...  
Keyword(s):  
Pressure Oxidation ◽  
Refractory Gold ◽  
Gold Bearing
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