难免离子对低品位菱镁矿浮选除硅的试验研究  

Research on Unavoidable Ions Effect Flotation of the Low-grade Magnesite

作　　者：郭石磊[1] 孙威[1] 龙小柱[1] 于欣平[1] 靳璐璐[1] 马超[1] 

机构地区：[1]沈阳化工大学化学工程学院,沈阳辽宁110142

出　　处：《山东化工》2017年第12期35-38,共4页Shandong Chemical Industry

摘　　要：我国菱镁矿资源丰富,针对海城某低品位菱镁矿,采用反浮选工艺进行难免离子(Fe^(3+),Mg^(2+)和Ca^(2+))对硅杂质脱除影响的试验研究。本试验以海城某工厂的菱镁矿为原料,通过单因素浮选试验,在磨矿细度-0.074mm占85%,保持矿浆原pH值,MgCl_2用量为80mg/L,抑制剂硅酸钠用量为200g/t,捕收剂十二胺为200g/t,起泡剂50%松油4.7L/t的条件下,最终可以得到精矿Mg O品位为45.31%,回收率为80.7%的良好指标。Magnesite resource is abundant in China. In this paper, the research of the influence of unavoidable ions （ Fe^3＋, Mg^2＋ and Ca^2＋） on the removing impurities by reverse flotation for the low - grade magnesite with high contents of silicate in Liaoning province is introduced. In the experiment, flotation condition test was conducted under then optimal conditions as follows：grinding fineness -0. 074mm of 85%, keep the slurry original pH, magnesium chloride dosage of 80mg/t, mineral adhesive dosage of 200g/t,lanrylamine dosage of 200g/t,50% pine oil dosage of 4.7L/t. The great performance of eoncentrate grade with MgO was 45.31% and recovery was 80.7%.

关 键 词：菱镁矿 反浮选 除硅 难免离子 

分 类 号：P619.237[天文地球—矿床学]