斑岩型铜钼矿浮选工艺优化改造与实践

Flotation process optimization of a porphyry copper-molybdenum ore and its practice

针对乌山铜钼矿在铜钼混合浮选时由于处理能力提高,回水循环利用等导致铜、钼回收率下降,铜钼混合精矿品位降低,杂质二氧化硅超标等问题,在小型试验及流程考查的基础上,进行了铜钼混合浮选工艺流程改造与药剂制度优化。通过取消快速浮选作业、改造混合浮选精选区、增加捕收剂PJ-053用量等,铜回收率由87. 20%提高到88. 45%,钼回收率由74. 54%提高到79. 20%。优化改造后工艺流程更加顺畅、稳定,选矿指标明显提高,且经济效益显著,新增利润2 905. 26万元。

Due to the improvement of treatment capacity in the process of Cu-Mo mixed flotation in Wushan Copper-Molybdenum Mine,reduction of copper and molybdenum recovery caused by backwater recycling and other problems,declining concentrate grade in the copper-molybdenum mixed concentrate and excessive silicon dioxide impurities,mixed copper and molybdenum flotation process is renovated and reagent regime is optimized based on lab tests and flowsheet investigation. By cancelling rapid flotation,modifying cleaning range of mixed flotation,increasing the dosage of collector PJ-053,the recovery rate of copper ore increased from 87. 20 % to 88. 45 %,the recovery rate of molybdenum increased from 74. 54 % to 79. 20 %. The optimized process is smoother and more stable than before,the mineral processing index is improved obviously,and the economic benefit is remarkable with added profits being 29 052 600 yuan.