氰化系统阶段提高金精矿磨矿细度的生产实践

The Production Practice about Improving Grinding Fineness of Gold Concentrate in Cyanide System Stage

在氰化生产过程中,进入氰化系统的金精矿细度对浸出指标起着至关重要的作用。为了进一步提高氰化浸出率,在选矿厂生产实践中充分利用现有设备资源,通过采集和分析再磨及磨矿分级系统的相关数据,确定合理的工艺参数,优化调整球磨机转速、磨矿介质、旋流器参数和给矿排矿等一系列参数,分阶段提高入浸金精矿细度,最终使精矿细度-400目含量提高至90%以上,浸出回收率提高0.17%,达到了降低磨矿分级系统电力消耗、降本增效的目的。

In the process of cyanide production,the gold concentrate fineness entranced the cyanide system is very important for leaching indicators.In order to improve the cyanide leaching rate,it is needed to make full use of existing equipment resources in the production practice of concentrator.Gather and analyze the related data of regrinding and grinding classification system,the reasonable process parameters have been determined.Optimized and adjusted to a series of parameters-milling rotational speed,grinding medium,cyclone parameters,and ore feeding and ore exhausting,to improve the gold concentrates fineness in stages.Finally,the content of gold concentrates fineness (400 meshes) increased up to more than 90%,and the leaching recovery rate increased by 0.17%.It has reached the purpose of reducing electricity consumption of the grinding classification system and cutting the cost to increase the profit.