内蒙古某铜矿低碱度铜硫分离浮选试验研究  

Experimental study on low alkalinity copper sulfur separation flotation of a copper mine in Inner Mongolia

作　　者：李超 凌石生 LI Chao;LING Shisheng(BGRIMM Technology Group,Beijing 100160,China;BGRIMM Chemical Techno logy(Cangzhou)Co.Ltd.,Cangzhou 061108,Hebei,China)

机构地区：[1]矿冶科技集团有限公司,北京100160 [2]北矿化学科技(沧州)有限公司,河北沧州061108

出　　处：《矿冶》2024年第1期39-45,共7页Mining And Metallurgy

摘　　要：内蒙古某铜矿选矿厂目前使用铜快速浮选+铜硫混合浮选—分离流程,石灰高碱工艺回收铜和硫,铜、硫回收率低。使用BK506替代石灰作硫铁矿抑制剂、BK305作铜捕收剂,在矿浆pH值9.9(原高碱工艺矿浆pH值为12)的条件下进行低碱度铜硫分离试验。结果表明,低碱工艺指标优于高碱工艺指标,采用低碱工艺闭路试验可获得铜精矿品位22.59%、回收率84.17%的铜精矿和硫精矿品位41.03%、回收率80.78%的硫精矿,铜硫分离效果好。与高碱工艺相比较,低碱工艺铜精矿回收率可提高0.91个百分点;硫精矿回收率可提高2.96个百分点,同时降低了石灰用量,取消了硫浮选前的加硫酸活化作业,工业应用前景较好。A copper ore dressing plant in Inner Mongolia currently uses a copper rapid flotation+copper sulfur mixed flotation separation process,with a lime high alkaii process to recover copper and sulfur,resulting in low copper and sulfur recovery rates.Using BK506 as a substitute for lime as a pyrite inhibitor and BK305 as a copper collector,a low alkalinity copper sulfur separation experiment was conducted under the condition of a flurry pH value of 9.9(the original high alkaii process slurry pH value was 12).The results showed that the low alkaii process index was better than the high alkaii process index.The low alkaii process closed circrnt test can obtain copper concentrate with a grade of 22.59%and a recovery rate of 84.17%,as well as sulfur concentrate with a grade of 41.03%and a recovery rate of 80.78%,The copper sulfur separation effect is good.Compared with the high alkaii process,the low alkaii process can increase the recovery rate of copper concentrate by 0.91 percentage points;The recovery rate of sulfur concentrate can be increased by 2.96 percentage points,while reducing the amount of lime and eliminating the sulfuric acid activation operation before sulfur flotation.The industrial application prospects are promising.

关 键 词：铜矿 低碱选铜 铜硫分离 BK506 BK305 

分 类 号：TD923[矿业工程—选矿] TD952