调整剂对高硫铝土矿浮选脱硫行为的影响  

An experimental study on the effects of regulators on desulfurization of high-sulfur bauxite

作　　者：李长凯[1] 孙伟[1] 张刚[1] 孟祥丽[1] 周苏阳[1] 

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083

出　　处：《有色金属（选矿部分）》2011年第1期56-59,26,共5页Nonferrous Metals（Mineral Processing Section）

基　　金："十一五"国家科技支撑计划重点项目(2008BAB31B02-04-02);国土资源部公益性行业科研专项基金(201011031)

摘　　要：采用浮选方法研究了调整剂对高硫铝土矿浮选脱硫的影响。以变性淀粉作为抑制剂,草酸和硫酸铜作为活化剂,丁基黄药作为捕收剂,综合考虑了分选系数和脱硫率,在最优条件下可取得硫含量为0.28%,Al2O3回收率为95.47%的精矿指标。试验表明变性淀粉可以很好地抑制一水硬铝石,减少Al2O3损失,使用组合活化药剂草酸和硫酸铜能显著提高脱硫率。The effects of regulators on the desulfurization of high-sulfur bauxite has been studied in flotation process using modified starch as depressant,oxalic acid and copper sulfate as combined activators,and butyl xanthate as collectors.The concentrate with 0.28% S content and 95.47% Al2O3 recovery at the optimum conditions can be achieved with comprehensive consideration of desulfurization ratio and separation ratio.The results show that modified starch can efficiently depress diasporic bauxite to reduce the loss of Al2O3,and combined activators of oxalic acid and copper sulfate can remarkably promote desulfurization ratio.

关 键 词：高硫铝土矿 组合活化剂 抑制 脱硫 

分 类 号：TD923[矿业工程—选矿] TD952.5