盘江焦炭对攀枝花钛精矿冶炼钛渣的影响  

Impact of Panjiang coke on titanium slag smelting with Panzhihua titanium concentrate

作　　者：邱淑兴 肖军 李凯茂[1,2] 宋兵 QIU Shu-xing;XIAO Jun;LI Kai-mao;SONG Bing(State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Panzhihua 617000,China;Panzhihua Iron and Steel Research Institute Co.Ltd.of Pangang Group,Panzhihua 617000,China)

机构地区：[1]钒钛资源综合利用国家重点实验室,四川攀枝花617000 [2]攀钢集团攀枝花钢铁研究院有限公司,四川攀枝花617000

出　　处：《中国有色冶金》2022年第2期24-29,共6页China Nonferrous Metallurgy

摘　　要：焦炭作为电炉冶炼钛渣还原剂,对钛渣冶炼过程及产品质量均有一定影响。以西昌焦炭为基准还原剂,通过对盘江焦炭和西昌焦炭的基本性质进行分析,结合2种焦炭现场应用情况,研究盘江焦炭对攀枝花钛精矿冶炼钛渣的影响特征。结果表明,盘江焦炭石墨化程度较西昌焦炭高10.83%,微晶体积较大,对应的表面活性碳原子占总碳原子数量的比例较小,进而使得盘江焦炭相较西昌焦炭反应活性低。尽管盘江焦炭固定碳含量和粒径分布优于西昌焦炭,但由于盘江焦炭的反应活性及结构劣于西昌焦炭,一定程度上导致盘江焦炭较西昌焦炭还原攀枝花钛精矿冶炼钛渣时配碳比增加、吨料电耗偏高、钛渣品位偏低。Coke,as a reductant in electric furnace smelting of Ti-slag,has a certain influence on the Ti-slag smelting process and the product quality.The Xichang coke is taken as the benchmark reductant,analysis on the basic properties of Panjiang coke and Xichang coke is made.By combining the field use of the two kinds of coke,the impact of Panjiang coke on the Ti-slag smelting of Panzhihua titanium concentrate is studied.The result shows that the graphitization extent of Panjiang coke is 10.83%higher than that of the Xichang coke,it has larger micro-crystal volume,with small ratio of corresponding surface active carbon elements to the total carbon elements,so that the reactivity of Panjiang coke is lower than that of Xichang coke.Although the fixed carbon content and particle size distribution of Panjiang coke are superior to those of Xichang coke,the reactivity and structure of the former are inferior to the latter,in some extent,compared with the Xichang coke,the carbon proportioning of Panjiang coke is increased in the reduction of smelting Ti-slag of Panzhihua titanium concentrate,with higher power consumption per ton material and lower Ti grade of the Ti slag.

关 键 词：焦炭 反应活性 石墨化程度 微晶结构 钛渣冶炼 生产指标 

分 类 号：TF823[冶金工程—有色金属冶金]