The technique of audio frequency slag melting has been exploited for top and bottom combined blownconverter in 150 t combined blowing converter of Tangshan Iron and Steel Company.
The work principle and maintenance method of bottom gas-feeding brick in top-bottom duplicate blownconverter are stated, it is proposed how to make the bricks synchronized with furnace life.
The slag-metal mixing behavior in a top-blownconverter was experimentally studied using water model, in order to examine the distribution of slag in liquid steel and vice versa.