贵州某高镁高铝胶磷矿双反浮选降杂试验研究  

STUDY ON IMPURITY REDUCTION FOR A HIGH MAGNESIUM AND ALUMINA COLLOPHANITE BY DOUBLE REVERSE FLOTATION

作　　者：李松清[1] 孙昊[1] 郑桂兵[1] 朱阳戈[1] 胡晓星[1] 

机构地区：[1]北京矿冶研究总院,矿物加工科学与技术国家重点实验室,北京102628

出　　处：《矿冶》2016年第1期1-4,9,共5页Mining And Metallurgy

基　　金：“十二五”国家科技支撑计划项目(2013BAB07B00);贵州省科技计划课题(项20116023)

摘　　要：以BK425为反浮选脱镁捕收剂,BK432为反浮选脱铝捕收剂,对贵州某高镁高铝胶磷矿采用双反浮选进行了提质降杂试验研究。原矿一段磨矿细度为-0.074 mm含量占70%,二段中矿再磨细度为-0.074 mm含量占75%,经过双反浮选闭路试验流程可以获得P2O5品位33.97%,倍半氧化物之和(Al2O3+Fe2O3)2.23%,Mg O含量0.73%,P2O5回收率73.71%的磷精矿。BK432捕收能力强,形成的脱铝泡沫较脆,容易消泡,流动性好,为反浮选脱铝闭路流程创造了良好的前提条件。With BK425 as a demagging collector and BK432 as a dealuminizingcollector of reverse flotation,an impurity reduction study of double reverse flotation on a high magnesium and alumina collophanite in Guizhou province has been carried out. The tests results show that under the conditions of first stage grinding fineness -0. 074 mm 70% and second stage middling-regrinding fineness of -0. 074 mm 75% , and by the closed-circuit flowsheet of double reverse flotation,a phosphate concentrate can be obtained with P205 grade 33.97% , （Al2O3 ＋ Fe203 ） grade 2.23% ,MgO grade 0.73% and P205 recovery 73.71%. The BK432 collector has strong collecting ability and the froth formed in the dealuminizing flotation is fragile and easy to be defoaming, and which provide good conditions for the closed - circuit flowsheet of dealuminizing by reverse flotation.

关 键 词：胶磷矿 双反浮选 捕收剂 高镁高铝 倍半氧化物 

分 类 号：TD952.5[矿业工程—选矿] TD923