高磷赤褐铁矿提铁降磷氯化离析工艺条件试验研究  

Experiments on segregation technological conditions of iron increase and dephosphorization from high-phosphorus hematite-limonite ore

作　　者：张桂芳[1,2] 刘金浪[2] 张宗华[2] 

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

出　　处：《中国矿业》2010年第7期67-70,共4页China Mining Magazine

基　　金：云南省学科带头人后备人才基金(编号:2006PY01-05)

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。在常规的强磁选、重选和浮选得到的选矿指标不够理想的情况下,本研究根据高磷赤褐铁矿的性质,采用氯化离析工艺进行工艺条件试验研究,分别进行了氯化剂用量试验、还原剂用量试验、磁场强度试验、磨矿细度试验、氯化离析-弱磁选工艺流程全程试验等。试验表明:氯化剂用量为25%为宜,还原剂用量为11%为宜,磁场强度为0.15T为宜,磁场细度为-0.074mm占100%为宜。在最优工艺条件下,铁品位为55.77%,铁回收率为85.48%。High-phosphorus hematite-limonite ore was studied by the spectral analysis,the chemical analysis,and the determination of iron phase,and occurrence mode of ore.Under the case that general ways of high-intensity magnetic separation,Gravity Separation,and floatation did not obtained good beneficiation index,according to the nature of ore,segregation technological conditions of iron increase and dephosphorization from high-phosphorus hematite-limonite ore were studied,including these experiments of the dosage of chlorination agents,the dosage of reducing reagent,intensity of magnetic field,grinding granularity,and full process experiments on segregation-low-intensity magnetic separation.Results were shown that：the dosage of suitable chlorination agents was 25%,and the dosage of suitable reducing agent was 11%,and suitable intensity of magnetic field was 0.15T,and suitable grinding granularity was-0.074mm.Under optimization technological conditions,the iron grade of 55.77% and the iron recovery of 85.48% were obtained.

关 键 词：高磷赤褐铁矿 提铁降磷 氯化离析 

分 类 号：TD92[矿业工程—选矿]