In order to keep the normal bath temperature and slag forming condition, the charge of pig iron should not be exceeded 10 % on middle and small converter.
中小型转炉内生铁块的加入量不应超过10 %，使转炉吹炼过程中保持正常的熔池升温和成渣状况。
2
In both the Acid Bessemer and Basic Bessemer processes molten pig iron is refined by blowing air through it in an egg-shaped vessel, known as a converter, of 15-25 tonnes capacity.