中文摘要：

对山西某铝土矿进行了提铝降铁试验研究,结果表明：采用1粗1精1扫浮选、1次高梯度强磁选流程处理该矿石,可以将Al2O3品位为从64.80%提高到72.57%,回收率达86.86%;Fe2O3含量从3.28%降至1.81%,去除率达57.20%;适宜的磨矿细度是取得理想分选指标的前提;六偏磷酸钠和捕收剂RL在正浮选提铝作业中发挥了主导作用;六偏磷酸钠在强磁选降铁作业中具有显著的强化分散作用。

英文摘要：

The aluminum increasing and iron reduction research on Shanxi a bauxite was carried out.The results show it could increase the Al2O3 grade from 64.80% to 72.57%,the recovery rate comes to 86.86%,while the concent of Fe2O3 decrease from 3.28% to 1.81%,the removal rate reaches to 57.20% when deal with the ore with one roughing,one cleaning,one scavenging and one high gradient magnetic separation.Appropriate grinding fineness is the guarantee of ideal separation index,sodium hexametaphosphate and RL flotation play a leading role in flotation to increasing aluminum,and sodium hexametaphosphate makes remarkable dispersion in the strong magnetic separation for iron reduction.