温度对铜渣和磷矿协同联产制备磷铁影响的实验研究  

Effect of Temperature on the Co-production of Copper Slag and Middle Low-grade Phosphate Rock

作　　者：谢仁齐 黄润[1] 刘利[1] 张金柱[1] Xie Renqi;Huang Run;Liu Li;Zhang Jinzhu(School of Materials and Metallurgy,Guizhou University,Laboratory Metallurgical Engineering and Energy Saving Process of Guizhou Province,Guiyang,Guizhou,China)

机构地区：[1]贵州大学材料与冶金学院,贵州省冶金工程及过程节能重点实验室,贵州贵阳550025

出　　处：《矿产综合利用》2022年第6期42-48,共7页Multipurpose Utilization of Mineral Resources

摘　　要：磷铁是一种重要的工业合金物,在炼钢、化工业及新能源领域和建筑业具有举足轻重的作用,磷铁的开发利用不仅可以为企业带来经济效益,也可为国家经济的发展注入活力。本文在T=1200~1400℃,R(CaO/SiO_(2))=1.0,t=60 min,C=12%条件下进行实验。以磷矿和铜渣为原料,石墨作还原剂,在高温节能管式炉中还原焙烧制取磷铁,还原后的试样进行分离、磨矿,采用XRD、SEM和EDS对磷铁及渣进行表征,结果显示:T<1300℃所得磷铁主要物相为Fe_(3)P,T>1300℃所得磷铁主要物相为Fe_(3)P、Fe_(2)P。还原后测得渣的主要成分为硅酸盐类,以偏硅酸钙为主(CaSiO_(3))和含有少量的硅酸铝。Ferro-phosphorus is an important industrial alloy,which plays a pivotal role in steelmaking,chemical industry,new energy and construction industry.The development and utilization of ferro-phosphorus can not only bring economic benefits to enterprises,but also contribute to the development of national economy.In this paper,the experiment was carried out under the conditions of T=1200℃-1400℃,R(CaO/SiO_(2))=1.0,t=60 min and C=12%.Phosphate rock and copper slag were used as raw materials,graphite was used as reducing agent,and ferrophosphorus was produced by reduction and roasting in a high-temperature energy-saving tubular furnace.The reduced samples were separated and ground,XRD,SEM and EDS were used to characterize ferrophosphorus and slag.The results showed that the main phase of ferrophosphorus obtained is Fe_(3)P at T<1300℃,and the main phase of ferrophosphorus obtained is Fe_(3)P and Fe_(2)P at T>1300℃.After reduction,it was measured that the main component of the slag was silicate,mainly calcium metasilicate(CaSiO_(3))and a small amount of aluminum silicate.

关 键 词：磷铁 磷矿 铜渣 高温还原 

分 类 号：TD952[矿业工程—选矿] TF09[冶金工程—冶金物理化学]