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有史以来,人类采用多种方法从矿石中回收黄金。经考证黄金选矿技术主要有下列五种工艺方法,见表1。人类最先采用的黄金选矿方法是重选法,例如使用河床淘金盘淘金,而由它发展而来的更复杂的设备,例如约翰逊型旋转洗金筒、带式选矿机和跳汰机完善了该种选矿方法。20世纪前50年,南非在黄金重选研究方面取得了不少成果。最初的选金方法只能提取粗颗粒自然金,随后又研究出把矿石捣磨碎,再采取混汞提金的方法。其基本原理是用大型机械锤把矿石砸碎,用
Historically, mankind has used various methods to recover gold from ores. The research gold dressing technology mainly has the following five kinds of technological methods, see Table 1. The first gold beneficiation method used by humans was re-election, such as the use of riverbed gold pan gold exploration, and more sophisticated equipment developed from it, such as Johnson-style rotary wash gold cylinder, belt concentrator and jig perfect The kind of dressing method. In the first half of the 20th century, South Africa had made many achievements in the study of gold re-election. The initial gold method can only extract coarse particles of natural gold, followed by the study of the ore pound grinding, and then take the method of amalgamation gold. The basic principle is to smash ore with a large mechanical hammer