胶磷矿浮选中碱性联合调整剂  

Alkalescent mixed-regulators in collophanite beneficiation

作　　者：罗惠华[1] 饶欢欢[1] 杨婕[1] 李成秀[2] 陈炳炎[2] 张泽强[1] 池汝安[3] 

机构地区：[1]武汉工程大学资源与土木工程学院,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》2014年第5期20-24,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(12120111308750);国家973预研项目(2011CB4111901);湖北省自然基金创新群体项目(2010CDA07);十二五科技支撑项目(2013BAB07B01)

摘　　要：为了降低胶磷矿正浮选pH值调整剂碳酸钠的用量,同时又能有效调整矿浆的性质,改善浮选性能,以某磷矿为试验样品进行了氢氧化钠或氧化钙联合碳酸钠调整矿浆性质的浮选试验.结果表明,氢氧化钠与氧化钙单独作为调整剂时的浮选效果较差,配合碳酸钠作为调整剂,可以改善浮选效果;当使用氢氧化钠与碳酸钠比例1∶3用量4.0 kg/t作为pH调整剂时的选矿指标精矿品位18.58％、回收率91.64％、选矿效率18.18％优于单独使用碳酸钠6～7.0 kg/t时选矿指标,前者的药剂用量低,因此选矿过程中的药剂成本会有所降低.在工业生产中,可以使用碳酸钠配合氢氧化钠作为矿浆pH调整剂.To decrease the dosage of sodium carbonate and improve the flotation index,the direct-flotation tests were carried out to study the adjustment performance of sodium hydroxide or calcium oxide combined with sodium carbonate as pH regulators on collophanite ores flotation process.The test resuits show that the flotation index is poor when using sodium hydroxide or calcium oxide alone as pH regulator,but it can be improved when combines with sodium carbonate.The regime of using sodium hydroxide combined with sodium carbonate in proportion of one to three 4.0 kg/t as pH regulators can achieve flotation indexes of 18.58％ concentrate,91.64％ recovery,18.18％ efficiency of concentration which are better than those using sodium carbonate 6-7.0 kg/t,but the former can cut down the reagent cost due to a lower dosage.Thus,sodium hydroxide combined with sodium carbonate can be used as pH regulators in the practice.

关 键 词：pH调整剂 氢氧化钠 氧化钙 碳酸钠 胶磷矿 正浮选 

分 类 号：TD923.1[矿业工程—选矿]