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随着球团矿在高炉中使用比例的增加,对其质量要求越来越高。鄂州球团厂使用的精矿结构与原设计相差较大,导致生球和成品球质量下降。针对这一问题,通过提高燃煤质量,合理配矿,开发湿式球磨与高压辊磨联合预处理技术,生球系统及梭式布料机改造,完善热工操作制度等措施,保证了生产的稳定顺行。成品球质量稳定,抗压强度达到2 500N/个以上,铁品位波动在1.0%以内,有害元素含量均达到高炉要求的标准。鄂州球团厂的球团矿产量和质量均达到了目标值。
As pellets are used in blast furnaces, their quality requirements are getting higher and higher. The structure of the concentrate used in Ezhou pellet plant is different from the original design, resulting in the decrease of the quality of green ball and finished ball. In response to this problem, through the improvement of coal quality, rational distribution of ore, the development of wet ball mill and high pressure roller mill combined pretreatment technology, ball system and shuttle fabric machine transformation, improve the thermal operation system and other measures to ensure the stability of production Shun. Finished ball quality and stability, compressive strength reached 2 500N / above, the grade of iron fluctuations in less than 1.0%, harmful elements have reached the required standard blast furnace. Ezhou pellet plant pellet production and quality have reached the target value.