利用钙镁质磷尾矿制备镁钙耐火颗粒研究  

Study on the Preparation of Magnesium-Calcium Refractory Particles Using Calcium-Magnesium Phosphorus Tailings

作　　者：张晋 尤大海 魏耀武[4] 张立 李国栋 张婷 Zhang Jin;You Dahai;Wei Yaowu;Zhang Li;Li Guodong;Zhang Ting(Hubei Institute of Metallurgical Geology(Central South Institute of Metallurgical Geology),Yichang,Hubei 443000;Key Laboratory of comprehensive utilization of mineral resources in Yichang,Yichang,Hubei 443000;Hubei Province Mineral Materials and Applied Engineering Technology Research Center,Yichang,Hubei 443000;College of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan,Hubei 430070)

机构地区：[1]湖北冶金地质研究所(中南冶金地质研究所),湖北宜昌443000 [2]矿产资源综合利用宜昌市重点实验室,湖北宜昌443000 [3]湖北省矿物材料及应用工程技术研究中心,湖北宜昌443000 [4]武汉科技大学材料与冶金学院,湖北武汉430070

出　　处：《非金属矿》2024年第4期17-20,共4页Non-Metallic Mines

基　　金：2022湖北省中央引导地方科技发展专项(2022BGE241);2023湖北省重点研发项目(2023BCA099)。

摘　　要：鄂西地区磷尾矿以钙镁质为主,且白云石含量(质量分数)达到75%以上。经过反浮选除磷-正浮选提钙镁的工艺流程后,钙镁回收率到到60%以上,MgO品位达到20%以上。将提纯后钙镁组分通过造粒-预煅烧-分级-改性后,可制得体积密度为3.09 g/cm^(3)、耐火度大于1800℃、荷重软化温度1660℃、常温耐压强度为58.4 MPa的钙镁耐火颗粒,且通过熔炼钢试验证明尾矿中的磷元素不会在冶炼过程中熔入到钢液中,验证了磷尾矿基耐火材料应用于冶金行业的可行性。The phosphorus tailings in the western Hubei region are mainly composed of calcium and magnesium,the content of dolomite reaches over 75%.After the process of reverse flotation for phosphorus removal and positive flotation for calcium and magnesium extraction,the recovery rate of calcium and magnesium reaches over 60%,and the MgO grade reaches over 20%.After the purified calcium and magnesium components are granulated-pre-calcined-graded-modified,calcium and magnesium refractory particles with volume density of 3.09 g/cm^(3),refractory degree greater than 1800℃,load softening temperature of 1660℃,and room temperature compressive strength of 58.4 MPa can be produced.The feasibility of using phosphorus tailings based refractory materials in the metallurgical industry has been verified through steel smelting tests,which have shown that phosphorus elements in tailings will not be integrated into the steel during the smelting process.

关 键 词：磷尾矿 反浮选 正浮选 提纯 钙镁耐火颗粒 冶金 

分 类 号：TD926.4[矿业工程—选矿] TQ175[化学工程—硅酸盐工业]