Experimental study on burden design optimization for blast furnaces at Juquan Iron and Steel Co. 酒钢高炉炉料结构优化实验研究。
When the circumference of the large bell is loaded by the small bell, the large bell is opened and the stock is dropped into the furnace. 大料钟的圆周都装上炉料后，大料钟降下，炉料便装入炉内。
