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目前,小型黄金矿山,选矿经济技术指标比较落后,可挖潜力很大。隆回金矿金山里选厂,经技术改造之后,采取优先提取粗粒金,即混汞+浮选工艺流程,选矿回收率可达85％左右,比原工艺回收率提高了20～25％,降低了成本,改善了生产条件,减轻了工人体力劳动,消除了环境污染。1983年6月投产以来开始受益。 (一) 小选厂改造的必要性隆回金矿原采用土法生产,1960年改为土洋结合,即采用摇床+氰化(渗滤)工艺流程,生产指标不高,金属流失较
At present, small gold mines, mineral processing economic and technical indicators are relatively backward, can tap a great potential. Longjin gold mine Jinshan in the selected plant, after technological transformation, to give priority to the extraction of coarse grained gold, that is, amalgam + flotation process, beneficiation recovery rate of up to 85% than the original process recovery rate increased by 20 to 25% , Reducing costs, improving production conditions, reducing manual labor and eliminating environmental pollution. Since its commissioning in June 1983, it has begun to benefit. (I) The Necessity of Small Plant Transformation The original Longhui gold mine was originally produced by indigenous method. In 1960, it was replaced by soil-ocean combination, that is, using shaker + cyanidation (diafiltration) process, the production index was not high,