Microwave Pyrolysis Pretreatment of High Arsenic Refractory Gold Sulfide Concentrates in Nitrogen Atmosphere: Process Optimization and Mechanism Study

JOM ◽  
2021 ◽  
Author(s):  
Shufeng Ruan ◽  
Dingfan Qiu ◽  
Chengyan Wang ◽  
Xiaowu Jie ◽  
Yonglu Zhang ◽  
...  
Keyword(s):  
Process Optimization ◽  
Nitrogen Atmosphere ◽  
Mechanism Study ◽  
Microwave Pyrolysis ◽  
Refractory Gold ◽  
Sulfide Concentrates ◽  
Gold Sulfide ◽  
High Arsenic

scholarly journals Process Optimization of Wood Particles Microwave Pyrolysis with Combined Production of Bio-Oil and Syngas

2020 ◽  
Vol 69 (6) ◽  
pp. 649-657
Author(s):  
Sikan Wu ◽  
Bo Chen ◽  
Yongyi Song ◽  
Xin Wang ◽  
Biao Zhang ◽  
...  
Keyword(s):  
Process Optimization ◽  
Microwave Pyrolysis ◽  
Bio Oil ◽  
Wood Particles

scholarly journals Bio-oxidation of a refractory gold bearing high arsenic sulphide concentrate: A pilot study

1993 ◽  
Vol 11 (1-3) ◽  
pp. 243-252 ◽  
Author(s):  
J.T. Chapman ◽  
P.B. Marchant ◽  
R.W. Lawrence ◽  
R. Knopp
Keyword(s):  
Pilot Study ◽  
Refractory Gold ◽  
High Arsenic ◽  
Gold Bearing

Microbial oxidation of refractory gold sulfide concentrate by a native consortium

2017 ◽  
Vol 27 (5) ◽  
pp. 1143-1149 ◽  
Author(s):  
N. MARCHEVSKY ◽  
M.M. BARROSO QUIROGA ◽  
A. GIAVENO ◽  
E. DONATI
Keyword(s):  
Microbial Oxidation ◽  
Refractory Gold ◽  
Gold Sulfide ◽  
Sulfide Concentrate

Study on the Gold Leaching Process by Potassium Ferricyanide

2015 ◽  
Vol 814 ◽  
pp. 273-277
Author(s):  
Ping Tang ◽  
Jing Liu ◽  
Min Wei Song ◽  
Hai Ping Yu ◽  
Xu Zhang
Keyword(s):  
Room Temperature ◽  
Potassium Ferricyanide ◽  
Process Conditions ◽  
Leaching Rate ◽  
Gold Leaching ◽  
Solid Ratio ◽  
Leaching Process ◽  
Refractory Gold ◽  
Object Of Study ◽  
High Arsenic

The traditional gold leaching method is cyanidation, which carries serious security and environmental problems. More and more attention is paid to the research on non-cyanide process. A high-arsenic-and-sulphur refractory gold concentrate in Sichuan was taken as the object of study. After the roasting-oxidation pretreatment of the sample, potassium ferricyanide was adopted to carry on the process experiment on gold-leaching. The leaching results as well as correlative process conditions were both investigated. The results showed that good leaching effects could be achieved by potassium ferricyanide. When the amount of potassium ferricyanide was 60g/L, the concentration of NaOH 0.2mol/L, the liquid-solid ratio 6:1 and the leaching process at room temperature lasted for 20h, the gold leaching rate reached 88.1%. If the leaching aid CaO2 is added simultaneously, it can contribute to the gold leaching. When the amount of CaO2 was 3g/L, the gold leaching rate increased to more than 94%, the amount of potassium ferricyanide decreased to 50g/L and the leaching time reduced to 14h.

Effect of grain size on the bacterial oxidation of a refractory gold sulfide concentrate and its dissolution by cyanidation

2022 ◽  
Vol 176 ◽  
pp. 107360
Author(s):  
S.H. Andrianandraina ◽  
J. Dionne ◽  
H. Darvishi-Alamdari ◽  
J.F. Blais
Keyword(s):  
Grain Size ◽  
Bacterial Oxidation ◽  
Refractory Gold ◽  
Gold Sulfide ◽  
Sulfide Concentrate

Rubidium and Potassium Extraction from Granitic Rubidium Ore: Process Optimization and Mechanism Study

2018 ◽  
Vol 6 (4) ◽  
pp. 4922-4930 ◽  
Author(s):  
Peng Xing ◽  
Chengyan Wang ◽  
Baozhong Ma ◽  
Ling Wang ◽  
Wenjuan Zhang ◽  
...  
Keyword(s):  
Process Optimization ◽  
Mechanism Study
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