摘要
为了研究钢铁企业含锌杂料的高效利用新技术,以3种含锌粉尘和1种硫酸渣为对象,开展球团金属化烧结新工艺研究。结果表明:在内配无烟煤,生球水分18%,造球时间13min的条件下造球,在总C/Fe(质量比)为0.5、外配还原剂烟煤(内外还原剂C含量分加比例为50:50)、料层高度400mm和风速0.4m/s的条件下鼓风烧结,得到成品率为85.62%、利用系数为0.471t/(m2·h)、转鼓强度为81.31%及固体燃耗为309.67kg/t的良好指标。金属化烧结矿全铁质量分数为60.53%,金属化率为45.23%,Zn的质量分数为0.18%,锌脱除率为92.78%,烟气冷凝后得到的粉尘经过进一步提纯后可作为锌冶炼的原料。
In order to develop new techniques of utilizing zinc-bearing waste,three kinds of zinc-bearing dusts and one kind of pyrite cinder were used for the pellets-metallized sintering process(PMSP).The results show that iron bearing mixture is used to ball under the conditions of balling at 18 mass%moisture for 13min.The green balls are used to conduct the metallized sintering process under conditions of mass ratio C/Fe of 0.5,in which the carbon ratio of inside to outside pellets of 50:50,the bed height of 400mm and the air speed of 0.4m/s.The pre-reduced product,assaying 60.53 mass% Fe with the metaIlization degree of 45.23%,and the Zn content of 0.18 mass%,was obtained at the yield of 85.62%,productivity of 0.471t/(m2.h),tumble index of 81.31%,the solid fuel consumption of 309.67kg/t,respectively.The dust obtained by flue gas condensation can be also used as raw material for zinc smelting after further purification.
作者
朱德庆
石玥
潘建
春铁军
鲁胜虎
ZHU De-qing;SHI Yue;PAN Jian;CHUN Tie-jun;LU Sheng-hu(School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,Hunan,China;School of Metallurgical Engineering,Anhui University of Technology,Ma'anshan 243002,Anhui,China)
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2018年第11期866-873,共8页
Journal of Iron and Steel Research
基金
国家自然科学基金资助项目(51574281)
关键词
含锌杂料
球团
金属化烧结
金属化率
脱锌率
zinc-bearing waste
pellet
metallized sintering
metallization
zinc removal rate
