目前铁合金生产用焦炭块经破碎后造成大量损耗(最高达30%)。熔炼铁合金用的焦块粒主要是25—10 mm。对不同粒度的焦块和焦粉做了研究,列述了其粒度组成、化学反应性,比电阻和比重的数值。焦块粒度>10mm和10—7mm的许多质量指标与粒度为20—10mm级的焦块相接近。通过试验研究表明,将冶金焦块的粒度下限值降至8— The current production of coke for ferroalloy production has caused a lot of wear and tear (up to 30%). Smelting iron alloy with the coke block is mainly 25-10 mm. The coke powder and coke powder of different particle sizes were studied, and the values ​​of their particle size composition, chemical reactivity, specific resistance and specific gravity were listed. Coke block size> 10mm and 10-7mm many of the quality indicators and particle size of 20-10mm level close to the coke block. Through experimental studies show that the metallurgical coke particle size lower limit down to 8-