冲天炉熔炼用的焦炭的筛分是较难解决的问题。目前大部分工厂所采用的方法有两种。一种是人工挑选,此法耗费人力,效率也低。另一种是机械筛分,但采用的较少。因为此法不仅占用大面积场地,而且需要较多的配套设备。 Cupola smelting coke screening is more difficult to solve the problem. At present, there are two methods used by most factories. One is manual selection, this method consumes manpower, efficiency is low. The other is mechanical screening, but less used. Because this method not only occupy a large area of ​​venues, but also need more equipment.