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近几年来,随着高炉的大型化以及精料的进一步发展,国外许多高炉渣量已降到300公斤左右,促使对矿石的处理精益求精。国内不少同志也主张在现有的基础上细磨深选,把渣量降到300公斤以下。渣量对降低焦比是否起决定性作用是值得商讨的。炼铁的最终目的是在保证质量的前提下生产成本低廉的生铁,选矿、细磨深选等均是为达到这一目的的手段,决不
In recent years, with the large-scale blast furnace and the further development of fine materials, many foreign blast furnace slag has dropped to about 300 kg, prompting the improvement of ore processing. Many domestic comrades also advocate finely grinding deep elections on the existing basis and reducing the amount of slag below 300 kilograms. It is worth discussing whether the amount of slag plays a decisive role in reducing the coke ratio. The ultimate goal of ironmaking is to produce low-cost pig iron under the precondition of ensuring quality, beneficiation and fine grinding are the means to achieve this goal.