低取代度羧甲基淀粉对齐大山铁矿抑制效果的研究  

Study on Inhibitory Effect of Carboxymethyl Starch with Low Degree Substitution on Qidashan Iron Ore

作　　者：孙长胜[1] 朱一民[2] 杨艳平[2] 任佳[2] 

机构地区：[1]鞍钢集团矿业公司齐大山铁矿,辽宁鞍山114043 [2]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《矿产保护与利用》2015年第1期32-36,共5页Conservation and Utilization of Mineral Resources

基　　金：中国地质调查资助项目(12120113086600);十二五科技支撑项目(12BAB14B02);中国地质调查局资助项目(1212011120312)

摘　　要：采用水酶法制备了一种低取代度羧甲基淀粉DRJ-2作为铁矿抑制剂。以齐大山铁矿的混合磁选精矿为浮选给矿,进行了详细的试验研究。结果表明,该抑制剂DRJ-2用量少,工艺流程简单;浮选闭路试验获得了精矿品位67.33%、尾矿品位12.64%、回收率86.33%的优异指标。该研究为提高铁矿物回收率、降低尾矿品位提供了一种性能优良的抑制剂。A kind of carboxymethyl starch with low degree substitution was synthesized using aqueous solvent and was used as inhibitor of iron ore in the flotation process of mixed magnetic concentrate of Qidashan Iron Ore Treatment Plant. Results showed that the dosage of DRJ-2 was less than that of strach,and technical process is simple. A better experimental index of concentrate Fe grade 67. 33%,Tailings Fe grade 12. 64%,and Fe recovery 86. 33% was obtained in a closed-circuit flotation test,which means that DRJ-2 is an effective inhibitor for increasing iron recovery of concentrate and decreasing the TFe grade in the tails saving iron resources.

关 键 词：低取代度 羧甲基淀粉 抑制剂 铁矿 浮选 齐大山 合成 

分 类 号：TD951[矿业工程—选矿] TD923.14