“cyanide process”的概念、定义、翻译、参考文献-科学参考

cyanide process

Chemistry

A method of extracting gold by dissolving it in potassium cyanide (to form the complex ion [Au(CN)₂]⁻). The ion can be reduced back to gold with zinc.

Chemical Engineering

A process used to extract gold from crushed rock. It involves dissolving the rock in aqueous sodium or potassium cyanide in the presence of air. The gold is converted to aurocyanide, which is then reduced back to gold with zinc in the following reactions:
$\begin{array}{l} 4 A u + 8 K C N + 2 H_{2} O + O_{2} \to 4 K A u {(C N)}_{2} + 4 K O H \\ 2 K A u {(C N)}_{2} + Z n \to 2 A u + K_{2} Z n {(C N)}_{4} \end{array}$

The process is also known as cyanidation.

单词	cyanide process
释义	cyanide process Chemistry A method of extracting gold by dissolving it in potassium cyanide (to form the complex ion [Au(CN)₂]⁻). The ion can be reduced back to gold with zinc. Chemical Engineering A process used to extract gold from crushed rock. It involves dissolving the rock in aqueous sodium or potassium cyanide in the presence of air. The gold is converted to aurocyanide, which is then reduced back to gold with zinc in the following reactions: $\begin{array}{l} 4 A u + 8 K C N + 2 H_{2} O + O_{2} \to 4 K A u {(C N)}_{2} + 4 K O H \\ 2 K A u {(C N)}_{2} + Z n \to 2 A u + K_{2} Z n {(C N)}_{4} \end{array}$ The process is also known as cyanidation.
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