Domestic and foreign production practice has proved that the blast furnace can achieve the advanced technical and economic indicators, have a great relationship with the preparation of raw materials. .
The practice of production at home and abroad proves that whether blast furnaces can reach advanced and technological economic indicators has a great relationship with the preparation of raw materials.
The production practice at home and abroad has proved that whether the blast furnace can reach the advanced technical and economic indicators has a great relationship with the preparation of raw materials. .<br>