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Iron pellets production - by adding coke and bentonite to metallurgical dust, pelletising and reducing the pellets

机译:铁球的生产-通过向冶金粉尘中加入焦炭和膨润土,制粒并减少球团

摘要

Fe pellets are produced from a mixt. of 45:55 blast furnace dust produced by steel making furnaces by (a) adding to the mixt. coke particles in such an amt. that the ratio of free C atoms to O atoms, which are bounded to Fe, Zn, and Pb, is 0.75-1.25, (b) adding 0.5-7 wt % (0.8-3%) bentonite, (c) pelletising the mixt. to which water has been added so that the pellets contain 9.5-15.6% (9.5-13.0%) water, (d) drying the green pellets at a temp. at which C is not combusted, giving pellets with a porosity of 27.5-40.0%, and (e) reducing the pellets in a rotary kiln. The pellets are suitable as charge or burden in a blast furnace. method prevents pulverisation of the pellets.
机译:铁粒是由混合物制成的。炼钢炉产生的45:55的高炉粉尘的添加方法(a)添加到混合物中。这种罐中的焦炭颗粒。绑定到Fe,Zn和Pb的自由C原子与O原子的比率为0.75-1.25,(b)添加0.5-7 wt%(0.8-3%)的膨润土,(c)将混合物造粒。向其中添加水,使颗粒中含有9.5-15.6%(9.5-13.0%)的水,(d)将绿色颗粒临时干燥。在不燃烧C的情况下,得到的小球的孔隙率为27.5-40.0%,并且(e)在回转窑中还原小球。粒料适合作为高炉中的装料或装料。该方法防止了颗粒的粉碎。

著录项

  • 公开/公告号FR2398113A1

    专利类型

  • 公开/公告日1979-02-16

    原文格式PDF

  • 申请/专利权人 SUMITOMO METAL INDUSTRIES LTD;

    申请/专利号FR19770021957

  • 发明设计人

    申请日1977-07-18

  • 分类号C21B13/08;

  • 国家 FR

  • 入库时间 2022-08-22 19:34:09

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