The technique of audio frequency slag melting has been exploited for top and bottom combined blown converter in 150 t combined blowing converter of Tangshan Iron and Steel Company.

• 在唐钢150t复吹转炉上开发出适用于百吨以上顶底复吹转炉的音频化渣技术,并根据音频曲线实现了转炉吹炼操作的量化分级管理。