超微细嵌布铁矿选矿技术研究  

Research on Beneficiation Technology of Micrograined Iron Ore

作　　者：张恩泽 王永刚[1] ZHANG Enze;WANG Yonggang(Jiuquan Iron and Steel(Group)Co.Ltd.,Jiayuguan 735100,China)

机构地区：[1]酒泉钢铁(集团)有限责任公司,甘肃嘉峪关735100

出　　处：《甘肃冶金》2024年第5期6-11,共6页Gansu Metallurgy

摘　　要：采用层压破碎,预选抛尾,球磨、塔磨+助磨、艾萨磨、分散-絮凝的阶段磨矿阶段磁选工艺,在磨矿细度-8μm85%的条件下,超微细嵌布黄沙泉铁矿可获得精矿Fe品位62.83%,SiO_(2)含量7.95%,TFe回收率63.69%,MFe回收率94.78%的较好指标。层压破碎后相对可磨度显著提高,复配助磨剂用量1 kg/t时助磨效果至少可达10%。Adopting lamination crushing,pre-selection tail,ball milling,tower miling and aid-grinding,ISA milling,dispersion flocculation stage grinding and stage magnetic separation process,under the conditions of grinding fineness of -8μm about 85%,micrograined huangshaquan iron ore can get better index of concentrate grade 62.83%,SiO_(2)5.21%,TFe recovery 65.70%,MFe recovery 94.78%.Significant improvement in relative grindability after laminated crushing,when the dosage of composite grinding aids is 1 kg/t,the grinding effect can reach at least 10%。

关 键 词：层压破碎 预选抛尾 绝对可磨度 解离度 磨矿 分散-絮凝磁选 

分 类 号：TD951[矿业工程—选矿]