Abstract: This paper mainly introduces the application of steel slag in Malaysia “one belt one road” iron and steel project. The regular pattern of combustible gas generation in hot stuffy production of steel slag was analyzed, and the corresponding preventive measures for safety accidents were put forward to ensure the safety in hot stuffy process with pressure.The favorable factors for magnetic separation of steel slag by hot stuffy process with pressure were analyzed. The conclusion can be used for reference in overseas application of steel slag hot stuffing process with pressure and magnetic separation purification line.

Key words: steel slag, pressure, hot stuffy, rolling crushing, purification, magnetic separation, safety