中低品位胶磷矿新型捕收剂的浮选性能  

Flotation performance of new collector on low and medium grade collophanite

作　　者：罗惠华[1] 汤家焰[1] 李成秀[2] 陈炳炎[2] 张泽强[1] 池汝安[3] 

机构地区：[1]武汉工程大学环境与城市建设学院,湖北武汉430074 [2]中国地质科学院矿产综合利用研究所,四川成都610041 [3]武汉工程大学化工与制药学院,湖北武汉430074

出　　处：《武汉工程大学学报》2013年第9期39-43,共5页Journal of Wuhan Institute of Technology

基　　金：中国地质调查局地质大调查项目(1212011120321);国家973预研项目(2011CB4111901);教育部长江学者与创新团队项目(0974);湖北省自然基金创新群体项目(2010CDA07);国家自然科学基金委员会;湖北省自然科学基金的资助

摘　　要：以碘值135的棉油脂肪酸作为原料通过合成与复配方法获得一种新型磷矿选矿捕收剂;首先将脂肪酸与酰胺药剂进行酰胺化,然后在合成的药剂中复配一定量的烷基酚聚氧乙烯醚表面活性剂.通过气相色谱分析了该脂肪酸的组成,以贵州磷矿为对象,利用常温浮选试验研究了该捕收剂的选矿特性.试验结果表明,碘值135脂肪酸中油酸、亚油酸含量较高,在碳链结构中双键、三键数目多.经过酰胺化和复配15%的表面活性剂烷基酚聚氧乙烯醚,提高了脂肪酸对磷酸盐矿物的浮选效果,在常温浮选过程中,降低了捕收剂的用量.在磨矿细度为-0.074 mm 79.83%,采用常温正反浮选工艺,获得了五氧化二磷为30.12%精矿,产率为71.20%,回收率为92.90%的选矿指标.A new collector was prepared through simple amidation using a surfactant OP-10compound with fatty acids whiose iodine value is 135as raw material.To examine flotation performance of the new collector,fatty acid composition was analyzed by gas chromatography and flotation tests with phosphate rock in Wengfu Guizhou in normal temperature were conducted.The test results show that the fatty acids whose iodine value is 135contain more oleic acid and linolei,selectivity of the fatty acids on phosphate minerals is raised through simple amidation and compounding with a surfactant OP-10dosage of synthetic medicament quality of 15%,the dosage of the collector is reduced greatly in the process of phosphate rock flotation in normal temperature.Beneficiation indexes that the phosphorus concentrate grade is 30.12%,the yield is 71.20 % and the recovery rate is 92.90% are obtained with flotation and reverse flotation in the grinding fineness-0.074mm 79.83%.

关 键 词：脂肪酸 酰胺化 复配 胶磷矿 常温浮选 

分 类 号：TD923.1[矿业工程—选矿]