浸出试验工艺条件对制备低磷铁精矿品位的影响  

Effect of technological conditions of leaching experiment on grade of low-phosphorus iron ore in preparation process

作　　者：张晓刚[1] 张桂芳[2] 张宗华[1] 陈晓鸣[1] 

机构地区：[1]昆明理工大学国土与资源工程学院,云南昆明650093 [2]昆明理工大学应用技术学院,云南昆明650093

出　　处：《中国矿业》2010年第4期61-63,67,共4页China Mining Magazine

摘　　要：对高磷赤褐铁矿进行了光谱分析、化学成分分析、铁物相的测定,以及矿石赋存状态研究。根据赤褐铁矿的性质,本研究选择不同酸分别进行了硫酸、盐酸浸出试验。对最佳浸出酸进行了酸浓度、浸出温度、液固比、浸出时间等不同工艺条件的试验研究。试验表明最佳工艺条件:H2SO4浓度以8.33%较为合适,浸出温度以60℃为宜,液固比以2.5∶1为宜,浸出时间以15min为宜。得到铁品位为58.96%,磷品位为0.222%,铁回收率为75.08%。Spectrum analysis, chemical composition analysis, determination of iron phase and the modes of occurrence on the ore of high phosphorus hematite-limonite had been studied by the paper. According to the character of hematite-limonite ore, leaching experiment were done by choosing different hydrochloric acid and sulfuric acid respectively. Different technology conditions of best leaching acid was studied in the concentration of acid , leaching temperature, liquid-to-solid ratio and leaching time. Best technology conditions were shown： the concentration of H2SO4 is 10%, leaching temperature is 60℃, liquid-to-solid ratio is 2.5 ： 1 and leaching time is 15 minutes, an ideal concentrate was obtained, which had the iron grade of 58. 96%, the phosphorous grade of 0. 222%, and the iron recovery of 75.08%.

关 键 词：浸出试验 工艺条件 品位 低磷铁精矿 

分 类 号：TD913[矿业工程—选矿]