氰化钠从硼镁石矿石中提取金

IF 0.1 Q4 ENGINEERING, CHEMICAL

Journal of the Pakistan Institute of Chemical Engineers Pub Date : 2020-04-19 DOI:10.54693/piche.04721

Sajjad Ali

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引用次数: 0

摘要

目前的研究重点是通过氰化钠（NaCN）从硼镁石矿石中提取金。由于锑的存在阻碍了氰化提取金，因此，首先用硫化钠（Na2S）和氢氧化钠（NaOH）对矿石进行处理，以去除/最小化锑含量。研究了氰化提金过程中NaCN浓度、时间效应和温度对金浸出率的影响。观察到金的提取率随着NaCN浓度和矿石量的增加而增加。金的最大浸出率（52.89-76.53%）在80℃、100分钟浸出时间、300转/分和10.5的pH水平下进行。

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Extraction of gold from boulangerite ore using sodium cyanide

Present study focuses over the extraction of gold via sodium cyanide (NaCN) from boulangerite ore. Since the presence of antimony hinders the extraction of gold by cyanidation therefore, the ore was first treated with sodium sulphide (Na2S) and sodium hydroxide (NaOH) to remove/minimize the antimony content. Gold extraction via cyanidation was then studied for different parameters including concentration of NaCN, time effect and influence of temperature on leaching of gold. It was observed that extraction of gold increases with increase in concentration of NaCN and ore amount. Maximum leaching of gold (52.89 - 76.53 %) was carried out at 80 oC, 100 minutes leaching time, 300 rpm and a pH level of 10.5.

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Journal of the Pakistan Institute of Chemical Engineers ENGINEERING, CHEMICAL-

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