淘洗磁选机在鲕状赤铁矿提铁降杂中的应用
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摘要
对广西某鲕状高磷赤铁矿进行了提铁降杂试验研究。采用磁化焙烧-磨矿-磁选-淘洗磁选流程,可得到精矿TFe品位61.16%、回收率82.13%、P含量0.385%、K_2O+Na_2O含量0.305%的优良指标,有害杂质含量显著降低。淘洗磁选可有效提高铁精矿品位并降低各非磁性矿物及碱金属含量。
In beneficiation of a high phosphorus oolitic hematite from Guangxi Zhuang Autonomous Region, a study aiming to upgrade its iron content by removing impurities was carried out. By using a magnetic roasting-grinding-magnetic separation-elutriation magnetic separation flowsheet, iron concentrate with TFe grade and recovery of 61.16% and 82.13%, respectively, was obtained, while the P content and K_2O+Na_2O content were reduced to 0.385% and 0.305%, respectively, showing that the harmful impurities could be effectively removed. It is concluded that elputriation magnetic separation can effectively improve the grade of iron concentrate and reduce the content of various non-magnetic minerals and alkali metals.
In beneficiation of a high phosphorus oolitic hematite from Guangxi Zhuang Autonomous Region, a study aiming to upgrade its iron content by removing impurities was carried out. By using a magnetic roasting-grinding-magnetic separation-elutriation magnetic separation flowsheet, iron concentrate with TFe grade and recovery of 61.16% and 82.13%, respectively, was obtained, while the P content and K_2O+Na_2O content were reduced to 0.385% and 0.305%, respectively, showing that the harmful impurities could be effectively removed. It is concluded that elputriation magnetic separation can effectively improve the grade of iron concentrate and reduce the content of various non-magnetic minerals and alkali metals.
引文
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[2] Ponomar V P,Dudchenko N O,Brik A B.Reduction roasting of hematite to magnetite using carbohydrates[J].International Journal of Mineral Processing,2017,164:21-25.
[3] Jianwen Yu,Yuexin Han,Peng Gao,et al.Recovery of boron from high boron iron concentrate using reduction roasting and magnetic separation[J].International Journal of Iron and Steel Research,2017,24(2):131-137.
[4] 解琳.国外某褐铁矿预洗矿-磁化焙烧-弱磁选工艺研究[J].矿冶工程,2018(2):51-54.
[5] 王建英,张新龙,张铁柱.固阳褐铁矿磁化焙烧-磁选扩大实验研究[J].矿冶工程,2017(4):82-85.
[6] 张汉泉,高王杰,蔡祥.硫酸渣磁化焙烧过程中铁的转化规律及分离试验研究[J].矿冶工程,2018(4):41-44.
[7] 周咏.全自动淘洗磁选机在研山铁矿的应用[J].现代矿业,2017(11):177-178.
[8] 李刚.水厂铁矿选矿工艺流程的改进[J].现代矿业,2016(10):69-71.
[9] 杨海龙,马嘉伟,包士雷.全自动淘洗磁选机在提铁降杂工程中的应用[J].矿业工程,2016,14(3):33-35.
[10] 姚耿,司不知,刘彬.全自动淘洗磁选机在中钢苍山铁矿的应用[J].现代矿业,2015(6):192-193.
[11] 吴新义,蔡顺贵,丁开振.马钢罗河铁矿磁选铁精矿降硫试验[J].金属矿山,2017(11):75-77.