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江西省“七五”重点工程项目之一的瑞昌洋鸡山金矿扩建250t/d采选工程,1991年11月29日在瑞昌市通过了由省冶金厅组织的竣工验收。 该矿于1984年6月建成100t/d采选综合生产能力,生产金铜精矿和硫精矿。但由于金嵌布粒度细,赋存状态复杂,选矿方法单一,致使选矿回收率不高。为了提高黄金产量和金属回收率,1987年该矿经上级批准,改坑采为露采,生产规模由原来的100t/d扩建至250t/d。扩建工程于1989年2月完工投入试生产,采用浮选——氰化——浮选工艺流程生产金铜精矿、硫精矿和成品金。经过近3年的试生产,已达到了设计生产能力。竣工验收会认为:洋鸡山金矿250t/d扩建工程,基建速度快、质量好,环保设施同时配套,试生产效果显著,是一个成功的范例。
250t / d mining and excavation project of Ruichang Yangjishan Gold Mine, one of the “Seventh Five-year” key projects of Jiangxi Province, was approved by the Provincial Metallurgical Department on November 29, 1991 in Ruichang City. The mine was completed in June 1984 100t / d mining comprehensive production capacity, the production of gold and copper concentrate and concentrate. However, due to the small size of gold cloth, the occurrence of complex state, a single beneficiation method, resulting in dressing recovery rate is not high. In order to improve the gold output and metal recovery rate, the mine was approved by a higher level in 1987 and the pit mining was open pit mining. Its production scale was expanded from 100t / d to 250t / d. Expansion project was completed in February 1989 trial production, the use of flotation - cyanidation - flotation process production of gold copper concentrate, sulfur concentrate and finished gold. After nearly 3 years of trial production, has reached the design and production capacity. Completion of the acceptance will be that: Yangjishan 250t / d expansion project, infrastructure, fast, good quality, environmental protection facilities at the same time, trial production is remarkable, is a successful example.