黄金选炼技术从书.pdf

前言
本册出版以来,深得广大池浸氰化选金生产者的厚爱。许多
选金生产者应用于实践,取得了相当丰硕的劳动果实。但也同时
指出了本书的不足之处。“理理论从实践中来,再到实践中去”,
在实践中验证理论、发展理论,这是真理发展的必由之路。本书
编制,采纳了众多选金生产者意见,比较具体地依据金矿石的类
型和性质谈了药剂的使用种类、方法和顺序。对于某些选金药剂
的应用原理也作了解释,但基本宗旨没变,那就是通俗实惠,易
懂实用。本书的不详之处,请参看《浸出、置换、熔炼》一书。
编者
叶和平
一九九四年元月一日
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第一章金、银生成的地质条件和矿床类型·········································3
一、含金石英脉矿床········································································4
二、含金蚀变破碎带和网状脉矿床················································ 5
三、碳酸盐建造中的微细浸染金矿··············································· 5
第二章选金药剂的种类和使用方法························································6
一、金、银的溶解原理···································································· 6
二、矿石性质和特点········································································ 7
三、溶金药剂的种类········································································ 7
四、保护碱的种类·············································································9
五、增速药剂···················································································10
六、氧化药剂(增氧药剂)····························································10
七、消除影响金溶解的药剂··························································11
八、置换箱中的添加剂··································································15
九、贫液含金量快速测定法··························································15
十、金粉熔炼时的添加剂······························································17
十一、金的提纯精炼······································································ 18
十二、冬季如何进行氰化······························································19
十三、混汞选金的用药··································································19
十四、池浸氰化时加药的顺序······················································ 22
十五、选金添加剂的使用保管注意事项·····································23
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第一章金、银生成的地质条件和矿床类型
金、是在地壳中相对分布很少的元素,由于它具有高度的化学稳
定性,所以它在自然界中多呈游离态出现,少数金与银、碲、铋形
成互化物形态存在。
金的生成时期可追溯到岩浆分化末期的热水时代。在热水时代,
金溶解于碱性的热水溶液中,并随热水溶液上升充填于地壳的裂缝之
中。随着热