铁酸钙脱磷剂试制及其脱磷效果的实验研究  

Experimental Study on Preparation of Calcium Ferrite Dephosphorization Agent and its Dephosphorization Effect

作　　者：年冠华 富强 NIAN Guanhua;FU Qiang(Liaoning Metallurgical Vocational Technical College,Benxi 117000,China;Beying Steel Plant of Benxi Group,Benxi 117000,China)

机构地区：[1]辽宁冶金职业技术学院,辽宁本溪117000 [2]本钢集团北营炼钢厂,辽宁本溪117000

出　　处：《工业加热》2022年第9期56-59,63,共5页Industrial Heating

摘　　要：为了实现在铁水脱磷过程中取代萤石造渣的目的,在实验室条件下试制了铁酸钙渣,并进行铁水脱磷的实验研究。依据铁酸钙的配比,分别在平炉和回转炉进行了烧制铁酸钙。通过XRD检测和矿相分析发现,采用回转窑试制的铁酸钙组织结构较平炉试制的铁酸钙更为均匀致密,熔点更低。综合比较回转窑和平炉两种工艺的产品质量和价格,选择回转窑方式生产铁酸钙最为合适。利用铁酸钙和石灰作为脱磷剂,采用铁酸钙与石灰为1∶1的配比能够获得最好的铁水脱磷效果。In order to achieve the purpose of replacing fluorite in the process of hot metal dephosphorization, calcium ferrite slag is prepared under laboratory conditions, and conducted experimental research on hot metal dephosphorization.According to the ratio of calcium ferrite, calcium ferrite was prepared in open hearth furnace and rotary kiln.Through XRD detection and mineral phase analysis, it is found that the structure of calcium ferrite prepared by the rotary kiln is more uniform and dense than the calcium ferrite produced by the open-hearth furnace, and the melting point is lower.Comprehensive comparison of the product quality and price of the two processes of rotary kiln and open-heart furnace, it is most suitable to choose the rotary kiln method to produce calcium ferrite.Calcium ferrite and lime are used as dephosphorization agents, and the ratio of calcium ferrite and lime is 1∶1 to obtain the best hot metal dephosphorization effect.

关 键 词：铁酸钙脱磷剂 试制 回转窑 平炉 熔化特性 铁水脱磷效果 

分 类 号：TF704.4[冶金工程—钢铁冶金]