微硅粉-碎硅石粉复合球团粒度组成对球团性能的影响  

EFFECTS OF PARTICLE SIZE COMPOSITION OF COMPOSITE PELLETS MADE WITH MICROSILICA AND CRUSHED SILICA ON THE PELLETS PROPERTY

作　　者：罗文波 张忠益 吕钧 杨林光 龙潇 LUO Wenbo;ZHANG Zhongyi;LYU Jun;YANG Linguang;LONG Xiao(Faculty of Materials and Energy Engineering,Guizhou Instute of Technology,Guiyang 550003,China;Yunnan Yongchang Silicon Industry Co.,Ltd,Longling 678300,China;Mangshi Yonglong Frroalloy Co,Ld,Mangshi 678400,China;Yunnan Longling Longshan Silicon Co,Ltd.,Longling 678300,China)

机构地区：[1]贵州理工学院材料与能源工程学院,贵州贵阳550003 [2]云南永昌硅业股份有限公司,云南龙陵678300 [3]芒市永隆铁合金有限公司,云南芒市678400 [4]云南省龙陵县龙山硅有限责任公司,云南龙陵678300

出　　处：《铁合金》2023年第1期7-10,共4页Ferro-alloys

基　　金：贵州理工学院高层次人才科研启动项目(XJGC20190951)。

摘　　要：工业硅企业生产中产生大量微硅粉和碎硅石废弃物,通过制备微硅粉-碎硅石粉复合球团返炉冶炼,可以提高工业硅生产资源利用率,达到降本增效的目的。本文通过控制微硅粉-碎硅石粉复合球团的粒度组成来改善球团强度,最终得到强度满足生产要求的球团。当球团中微硅粉含量占比40%的优化条件下,微硅粉-碎硅石粉复合球团干球团落下强度15.5次,抗压强度2197 N,热球团落下强度15.4次,抗压强度1703 N。复合球团性能优越,满足生产要求。A large number of microsilica and crushed silica waste were produced in the production of industrial grade silicon enterprises.By preparing microsilica and crushed silica powder composite pellets for return process,the utilization rate of resources about industrial grade silicon production can be improved,and cost reduction and efficiency increase can be achieved.In the paper,the strength of the pellets can be improved by controlling the particle size composition of the composite pellets made with microsilica and crushed silica powder,and the final strength requirements can be met.Under the optimized condition that the content of microsilica accounts for 40%of the pellets,the dry pellet shatter strength of composite pellets made with microsilica and crushed silica powder was 15.5 times,with the compressive strength of 2197 N,the hot pellet shatter strength was 15.4 times,with the compressive strength of 1703 N.With superior performance,the composite pellets can meet the production requirements.

关 键 词：微硅粉 碎硅石 球团 强度 粒度 

分 类 号：TF624.5[冶金工程—钢铁冶金] TF645