电解锰渣中高温焙烧试验研究  

Experimental Study on Roasting of Electrolytic Manganese Slag at Medium and High Temperature

作　　者：陈沪飞 CHEN Hufei(Guizhou Kingray New Materials Co.,Ltd.,Tongren 554300,Guizhou,China;Changsha Research Institute of Mining and Metallurgy Co.,Ltd.,Changsha 410012,Hunan,China)

机构地区：[1]贵州金瑞新材料有限责任公司,贵州铜仁554300 [2]长沙矿冶研究院有限责任公司,湖南长沙410012

出　　处：《矿冶工程》2024年第5期100-104,共5页Mining and Metallurgical Engineering

基　　金：国家重点研发计划(2022YFC3901204);铜仁市科技计划项目([2023]71号)。

摘　　要：为探索电解锰渣合理处置方法,研究了中高温焙烧对电解锰渣中锰、硫、氨氮含量的影响。结果表明:电解锰渣直接焙烧时,焙烧温度1050℃、焙烧时间60 min条件下,电解锰渣直接焙烧样中S质量分数由9.11%降至0.87%,锰质量分数由1.87%增至2.26%;电解锰渣先经水洗再配煤焙烧,焙烧温度1000℃、焙烧时间60 min、配煤量质量分数3%条件下,水洗-配煤焙烧样中S质量分数降至1.32%、锰质量分数降至0.78%;电解锰渣经中高温焙烧后可满足水泥掺合料对S质量分数的要求;电解锰渣中高温焙烧脱氨氮效果较好,其中氨氮基本脱除。In order to find a reasonable disposal method for electrolytic manganese slag(EMS),effect of roasting at medium and high temperature on the content of manganese,sulfur and ammoniacal nitrogen in EMS was explored.The results show that after the EMS is directly roasted at 1050℃for 60 min,the mass fraction of S in the EMS sample falls from 9.11%to 0.87%,while the mass fraction of Mn goes up from 1.87%to 2.26%.After being washed with water,the EMS sample is then roasted with 3%coal(in mass fraction)at 1000℃for 60 min.As a result,the mass fractions of S and Mn in the obtained roasted sample drop down to 1.32%and 0.78%,respectively.It is found that after direct roasting process at medium and high temperature,EMS can meet the requirement of mass fraction of S for cement admixture,and also medium and high temperature roasting process can almost remove all ammoniacal nitrogen therein,presenting a good removal effect.

关 键 词：电解锰渣 中高温焙烧 脱硫 水泥 脱氨 脱氮 

分 类 号：TF046[冶金工程—冶金物理化学]