金属学报  1980, Vol. 16 Issue (1): 8-125

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改进包头精矿烧结矿质量的研究

周取定;任允芙;李凤仪

北京钢铁学院、包头钢铁公司烧结试验组;北京钢铁学院、包头钢铁公司烧结试验组;北京钢铁学院、包头钢铁公司烧结试验组

AN IMPROVEMENT ON SINTER QUALITY OF BAOTOU IRON ORE CONCENTRATE

Joint Res. Gp. of Beijing Institute of Iron and Steel Technology and Baotou Iron and Steel Company

周取定;任允芙;李凤仪. 改进包头精矿烧结矿质量的研究[J]. 金属学报, 1980, 16(1): 8-125.
, , . AN IMPROVEMENT ON SINTER QUALITY OF BAOTOU IRON ORE CONCENTRATE[J]. Acta Metall Sin, 1980, 16(1): 8-125.

摘要 参考文献 相关文章 Metrics 全文: PDF(3278 KB)   摘要: 本文对包头精矿烧结矿的宏观结构、微观结构及矿物组成进行了岩相及矿相研究,并对其中的稀土矿物等进行了电子探针分析,对烧结矿中主要胶结相矿物——枪晶石进行人工合成,测定了枪晶石的抗压强度及耐磨性. 试验研究了硅(SiO_2),氟(CaF_2)对包头精矿烧结矿强度的作用机理,测定了随着烧结矿中Si、F_2含量的变化与其液相性质——粘度及表面张力的关系,以及对烧结矿结构及强度的影响. 试验证明,精矿中的F_2是影响烧结矿强度的主要因素,其次是Si低胶结相量少,枪晶石的抗压强度低耐磨性差也是影响烧结矿强度的一种因素. 根据实验结果提出了改进包头精矿烧结矿质量的措施,并在生产中获得成功的应用. Abstract：A study was made of the macro- and microscopic structure and mineralogicalconstitution of sinter prepared by Baotou iron ore concentrate which differs fromothers by the presence of remarkable quantities of fluorine and rare earth com-pounds. The viscosity and surface tension of sinter slag phase have been measuredwith various additions of SiO_2 and CaF_2 in the sinter. It was observed that thefluorine, mainly as CaF_2, forms itself into cuspindine which is a major constituentinjurious to the properties of bonding phase and consequently the strength of thesinter. The fluorine-bearing mineral decreases obviously the viscosity and surfacetension of the slag in the sinter and makes in turn the sinter porous, with opentubular thin framework structure. Certain amount of SiO_2 may also lower thestrength of sinter slag bonding, yet it seems to be acted secondarily. In order toimprove the strength of Baotou sinter, decreasing its fluorine content to such anextent of less than 1.5% in the concentrate by benefciation may be preferable.Furthermore, both raising the slag basicity up to 2.0 and adding dolomite to sub-stitute partially the limestone in sinter burden materials may also be effective.An industrial process raising the sinter basicity up to 2.0 was found on trial inBaotou Iron and Steel Company to be successful. 收稿日期: 1980-01-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 周取定 任允芙 李凤仪 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1980/V16/I1/8 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed