摘要
针对金翅岭金矿选矿厂磨机充填率低,钢球配比、钢球尺寸不合理导致磨机生产能力低,磨矿细度达不到浮选要求及浮选指标差等问题,通过应用段式球径半理论公式和精确化装补球技术,计算得出磨机初装球方案和补加球方案,并对现场磨矿工艺进行优化改进,提高矿物单体解离度,从而改善磨矿效果及浮选指标。工业试验结果表明,应用精确化装补球技术使得磨机生产能力提高了5%~8%,3种矿石的磨矿细度分别提高了7.16个百分点、14.03个百分点和12.13个百分点,磨机电耗分别降低了9.94%、11.47%和10.14%,介质单耗分别降低了21.31%、15.84%和17.83%。特别是3号矿石,浮选尾矿金品位降低了35.29%,回收率提高了2.46个百分点。由此可见,精确化装补球技术的应用取得了良好的效果,创造了可观的经济效益,具有较好的应用及推广价值。
Due to the low production capacity of grinder, the grinding fineness can not reach the requirement of subsequent flotation,the poor result of flotation in Concentrating Mill of Jinchiling Gold Mine,Duan＇s semi-theoretical formulate of ball diameter and the technology of accurate ball loading and addition were applied to calculate the initial ball scheme and extra ball scheme, besides, improve the grinding effect and flotation index by improving the site grinding process and increasing the mineral liberation degree.The industrial test results indicate that the adoption of accurate ball loading and addition method can bring a grinding mill production capacity increase by 5%-8%, grinding fineness of three ores increase by 7.16,14.03 and 12.13 percentage points respectively, electricity consumption decrease by 9.94%, 11.47% and 10.14% respectively,unit consumption of grinding media decrease by 21.31%, 15.84% and 17.83% respectively.Especially for the third ore, the degree of flotation tailings decrease by 35.29% ,the recovery rate increase by 2.46 percentage points.The results indicated that the adoption of the technology of accurate ball loading and addition has bring a good production effect and a remarkable economic benefit, so it has a better using and popularizing value.
出处
《黄金科学技术》
CSCD
2015年第6期87-91,共5页
Gold Science and Technology
关键词
精确化装补球
段式球径半理论公式
磨机生产能力
磨矿细度
电耗
介质单耗
accurate ball loading and addition
Duan＇s semi-theoretical formulate of ball diameter
production capacity of grinder
grinding fineness
electricity consumption
medium consumption
