含钛铁精矿高铁低硅烧结技术  

High iron and low silica sintering techniques of titaniferous iron concentrate

作　　者：范晓慧[1] 陈许玲[1] 李骞[1] 袁礼顺[1] 石军 羊小东 宋清勇 

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083 [2]攀枝花新钢钒股份有限公司炼铁厂,四川攀枝花617022

出　　处：《中南大学学报（自然科学版）》2006年第3期481-486,共6页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金与上海宝钢集团公司联合资助项目(50374080);新世纪优秀人才支持计划(NCET-05-0690);中南大学研究生教育创新工程资助项目(030609)

摘　　要：在攀枝花新钢钒股份有限公司炼铁厂现有的资源条件下,通过优化配矿实现含钛铁精矿高铁低硅烧结,烧结矿全铁的质量分数从49.20%提高到51.46%,SiO2的质量分数从5.30%降低到4.05%。采取钛精矿预先制粒和返矿预润湿等强化措施,烧结矿转鼓强度可提高2.24%,利用系数提高0.06 t/(m2.h),成品率提高4.84%。矿相分析结果表明:钛精矿预先制粒可提高烧结矿中铁酸钙和硅酸钙的含量,降低钙钛矿的生成,圆粒状赤铁矿聚晶复合体和团块状集合体显著增加;而返矿预润湿则增加了扩散固结的比例,磁铁矿含量增加,铁酸钙含量减少。The high iron and low silica sintering of titaniferous iron concentrate was realized with optimal proportioning ore under the present condition in Panzhihua New Steel and Vanadium Limited Company. Iron content of sinter can be increased from 49. 20% （mass fraction） to 51.46% and SiO2 content can be decreased from 5.30% to 4.05%. The quantity and quality of sinter was improved by some strengthen techniques such as pre-granulating of titanium concentrate and pre-moistening of return fine. Tumbler strength, productivity coefficient and yield of sinter can be raised by 2.24%, 0. 06 t/（m^2·h） and 4. 84%, respectively. The mineralogical analysis results of sinter show that pregranulating of titanium concentrate can increase contents of calcium ferrite and calcium silicate, decrease perovskite content, and produce markedly round crystal combination and lump aggregate of hematite. And pre-moistening of return fine can improve diffuse binding, increase magnetite content, and decrease calcium ferrite content.

关 键 词：钛铁精矿 烧结 攀枝花 

分 类 号：TE124.5[石油与天然气工程—油气勘探]