北方某中低品位磷矿低温浮选试验研究  

Experimental study on flotation of a mid-low grade phosphate ore from north China at low temperature

作　　者：杨聪[1] 陈兴华[1,2] 解文康 邓海波[1] 马智敏 刘国红 YANG Cong CHEN Xing-hua XIE Wen-kang DENG Hai-bo MA Zhi-min LIU Guo-hong(School of Minerals Processing and Bioengineering, Central South University, Changsha Hunan 410083, China Pingdingshan Huaxin Flotation Engineering Technology Service Co. ,Ltd. , Pingdingshan Henan 467000,China)

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083 [2]平顶山华兴浮选工程技术服务有限公司,河南平顶山467100

出　　处：《化工矿物与加工》2017年第2期1-4,38,共5页Industrial Minerals & Processing

摘　　要：北方典型硅质磷块岩分选指标易受低温因素影响。本文针对某P_2O_5品位为16.60%的中低品位磷矿,以碳酸钠为调整剂,水玻璃为抑制剂,新组合药剂HXP-7为捕收剂,在8~10°C进行正浮选试验研究。结果表明:在磨矿细度为-0.074mm占62.87%的条件下,按照正交试验确定的最佳药剂用量,通过一次粗选、两次精选的浮选流程,开路试验获得了磷精矿P_2O_5品位为36.84%、P_2O_5回收率为87.98%,闭路试验获得了磷精矿P_2O_5品位为34.76%、P_2O_5回收率为90.48%的良好指标。The flotation index of siliceous phosphate ore in north China tends to be significantly affected by the low temperature. In this study, direct flotation tests were conducted on a mid-low grade phosphate with P2O5 grade of 16.60%, using so- dium carbonate as regulator, sodium silicate as depressor and a new combined reagent HXP-7 as collector at a low temperature of about 8-10℃. Results showed that with the grinding fineness being -0. 074 mm 62.87%, by adding an optimal amount of rea- gents that was determined by the orthogonal test, the phosphate concentrate with grade of P20536.84% and recovery of 87.98% was produced by an open-circuit test and the phosphate concen- trate with grade of P2O5 34. 76% and recovery of 90. 48% was obtained by a closed-circuit test with the one-roughing and two- cleaning flotation process.

关 键 词：中低品位磷矿 硅质磷矿 低温浮选 捕收剂 正交试验 

分 类 号：TD971[矿业工程—选矿]