用硫氰酸盐从硫酸烧渣中浸出金银试验研究
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摘要
研究了用硫氰酸盐从吸收二氧化硫废气后的硫酸烧渣中浸出金银,考察了硫氰酸盐用量、体系pH、液固体积质量比、浸出时间对金、银浸出率的影响。试验结果表明,在烧渣质量100g、硫氰酸钠10g、体系pH=2、液固体积质量比2∶1、常温下搅拌浸出4h条件下,金浸出率为82.6%,银浸出率为62.4%,浸出效果较好。
Leaching of gold and silver from pyrite cinders absorbing sulfur dioxide by thiocyanate process was investigated.The effects of thiocyanate usage,system pH,liquid-to-solid ratio,leaching time on leaching of gold and silver were examined.The results show that leaching rate of gold and silver are 82.6% and 62.4%,respectively under the optimum conditions of pyrite cinders of 100 g,sodium thiocyanate of 10 g,system pH of 2,liquid-to-solid ratio of 2∶1,agitation leaching for 4hours at room temperature.The leaching effect is better.
Leaching of gold and silver from pyrite cinders absorbing sulfur dioxide by thiocyanate process was investigated.The effects of thiocyanate usage,system pH,liquid-to-solid ratio,leaching time on leaching of gold and silver were examined.The results show that leaching rate of gold and silver are 82.6% and 62.4%,respectively under the optimum conditions of pyrite cinders of 100 g,sodium thiocyanate of 10 g,system pH of 2,liquid-to-solid ratio of 2∶1,agitation leaching for 4hours at room temperature.The leaching effect is better.
引文
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[2]孙戬.金银冶金[M].2版.北京:冶金工业出版社,2008:431-436.
[3]刘秉涛,庞锡涛.硫氰酸盐法浸取金银的热力学分析[J].黄金,1995,16(3):40-42.
[4]冀少华,安莲英,唐明林.硫氰酸盐法从工业废渣中浸取金银的试验研究[J].矿产综合利用,2009(1):43-44.
[5]于大勇,曹艳君.难浸金矿废矿渣中金的分析与提取[J].石油化工高等学校学报,1997,10(4):31-33.