| 摘要 |
A process for recycling hydrogen cyanide from a cyanide-containing slurry (2 4) is provided. The process includes the steps of adjusting the pH (28) of a cyanide-containing slurry, volatilizing HCN (3 0) contained in the pH adjusted slurry (24) and con- tacting the volatilized HCN (44) with a precious metals-containing slurry (1 8) to recover precious metals (19) therefrom. Alterna- tively, the HCN can be contacted with reclaim, or decant, water to recover cyanide, thereby conserving resources.
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