西藏某铜钼矿铜钼混合浮选作业工艺优化试验研究
Experimental Study on Optimization of Beneficiation Process of a Copper-molybdenum Ore in Xizang
吴双桥 1温建 1黄丽娟 1刘晓英1
作者信息
- 1. 紫金矿冶设计研究院,福建上杭 364200
- 折叠
摘要
西藏某 60000 t/d铜钼矿选矿厂铜钼混合浮选存在作业海拔高、处理矿石性质不稳定、矿山氧化率大且易泥化等困难,而且由于浮选作业中中矿循环量大,给生产的稳定和选矿指标的提升带来巨大难题.生产原矿矿石研究表明,该矿石属于难选硫氧混合矿石.本文在矿石性质研究的基础上,开展了多方案浮选工艺条件优化,并对流程结构、捕收剂种类和硫化活化取舍等关键因素展开组合的闭路试验,最终确定"一次粗选+两次扫选+两次精选-精扫"尾矿开路的流程结构和丁基黄药+BK404组合捕收剂以及添加适量硫化钠作为铜硫化活化剂为最佳工艺方案.此时,闭路试验可获得含铜 22.24%、钼 0.740%,铜回收率 85.45%,钼回收率 72.71%的铜钼混合精矿,为下一步生产技改提供可靠的依据.
Abstract
The mixed flotation of copper and molybdenum in a 60000 t/d copper molybdenum ore dressing plant in Xizang has many difficulties,such as high operating altitude,unstable ore processing properties,large oxidation rate of the mine and easy sliming.Moreover,due to the large circulating volume of middlings in the flotation operation,it has brought great difficulties to the stability of production and the improvement of mineral processing indicators.Research on the production of raw ore indicates that this ore belongs to the category of refractory sulfur oxygen mixed ore.Based on the study of ore properties,this article carried out multi scheme flotation process condition optimization,and conducted closed circuit experiments on key factors such as process structure,collector type,and sulfide activation selection.Finally,the process structure of"one coarse selection+two sweeping selections+two fine selections-fine sweeping"tail ore open circuit,butyl xanthate+BK404 combined collector,and adding an appropriate amount of sodium sulfide as copper sulfide activator were determined as the optimal process scheme.At this point,the closed-circuit test can obtain a copper molybdenum mixed concentrate containing 22.24%copper,0.740%molybdenum,with a copper recovery rate of 85.45%and a molybdenum recovery rate of 72.71%,providing a reliable basis for the next production technological transformation.
关键词
铜钼混合浮选/矿石性质研究/硫氧混合矿/关键因素/精扫尾矿开路Key words
Cu-Mo bulk flotation/mineralogy/sulfide-oxidized mixed ore/key factors/scavenger cleaner tail引用本文复制引用
出版年
2025
国家科技期刊平台
NSTL
万方数据