羧甲基纤维素对微细粒蛇纹石的絮凝及抑制作用  

Flocculation and Depression Effects of Carboxymethyl Cellulose on Serpentine

作　　者：冯博[1] 朱贤文[1] 彭金秀[1] 

机构地区：[1]江西理工大学江西省矿业工程重点实验室,赣州341000

出　　处：《硅酸盐通报》2016年第5期1367-1371,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金资助项目(51404109);中国博士后科学基金(2015M582759XB)

摘　　要：通过浮选实验、沉降实验、吸附量测试及红外光谱测试研究不同种类抑制剂在蛇纹石浮选中的作用,并考察其作用机理。结果表明,蛇纹石表面亲水,可浮性较差,微细粒级蛇纹石能够通过泡沫夹带上浮进入精矿。高分子抑制剂羧甲基纤维素(CMC)能完全抑制细粒级蛇纹石的浮选,而抑制剂水玻璃不能抑制细粒级蛇纹石的浮选。机理研究表明,CMC和水玻璃均能在蛇纹石表面吸附,而高分子抑制剂CMC能对细粒级蛇纹石产生絮凝作用,增大蛇纹石颗粒表观粒度,降低泡沫夹带,从而实现细粒级蛇纹石的完全抑制。The depression effects of different depressant on serpentine flotation was studied by flotation experiments,settlement experiments,adsorption tests and infrared spectra tests,and the mechanism was also discussed. The result shows that the serpentine surface is hydrophilic and the natural flotability is poor. The fine grained serpentine comes into the concentrate mainly by entrainment. The polymeric depressant CMC can depress the flotation of fine grained serpentine while depressant sodium silicate can＇t depress fine grained serpentine flotation. Mechanism studies show that the polymeric depressant can flocculate fine grained serpentine and increase the serpentine apparent particle granularity,thus reduce the entrainment and realize the depression of fine grained serpentine.

关 键 词：抑制剂 蛇纹石 絮凝 抑制 

分 类 号：TD952[矿业工程—选矿]