强力混合预润湿强化干矿粉造球的研究  

Research on Pre-wetting of Dry Ore Powder by Intensive Mixing to Enhance Pelletizing

作　　者：颜明 谭潇然 陈许玲[2] 刘荣超 邵宏研 孙大为 YAN Ming;TAN Xiaoran;CHEN Xuling;LIU Rongchao;SHAO Hongyan;SUN Dawei(Jianlong Xilin Iron and Steel Co.,Ltd.,Yichun 153026,China;School of Resource Processing and Bioengineering,Central South University,Changsha 410083,China)

机构地区：[1]建龙西林钢铁有限公司,黑龙江伊春153026 [2]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《矿业工程》2024年第3期52-55,共4页Mining Engineering

摘　　要：北方冬季长、气温低,一般采用超低水分铁精矿进行球团生产,但其造球性能差,现有暖仓浸泡预润湿工艺流程长、水分波动大。为此,在系统研究了铁精矿水分对造球性能影响规律的基础上,引入强力混合机进行预润湿混合。结果表明,强力混合可明显改善预润湿效果、提高生球强度,适宜的混合料水分和膨润土用量分别降低1%和0.3%,流程缩短、生产效率提升。In northern China,the winter is long and the temperature is low,iron concentrate with ultra-low moisture is generally used for pellet production,but its pelletizing performance is poor.And the existing warm bin soaking pre-wetting process has a long process flow and large moisture fluctuation.Therefore,based on the systematic study of the influence of iron concentrate moisture on pelletizing performance,an intensive mixer is introduced for pre-wetting and mixing.The results show that the intensive mixing can significantly improve the pre-wetting effect and increase the strength of green balls,and the appropriate mixture moisture and bentonite consumption are reduced by 0.5%and 0.2%respectively.The process is shortened and the production efficiency is improved.

关 键 词：超低水分铁精矿 强力混合 造球性能 

分 类 号：TF046[冶金工程—冶金物理化学]