Abstract:In order to realize the efficient resource utilization of zinc-containing solid waste in iron and steel metallurgy and solve the problem of insufficient strength of its carbon-containing cold briquettes,converter high-zinc sludge and blue carbon are used as the main raw materials,and the optimization of the briquetting process and binder properties are systematically carried out. By optimizing the cold pressing process parameters (8% moisture addition,forming pressure of 16 MPa) and vacuum roasting system (1 100 ℃,40 min),the effects of bentonite,cement,calcium oxide and innovative binder putty powder on the strength of briquettes were explored. The results show that,with its unique organic-inorganic composite bonding system ( HPMC synergizes with cement and gypsum), putty powder can achieve the optimal reinforcement effect at the lowest addition amount (3%),and its compressive strength of dry briquettes reaches 571. 2 N/ P, and the strength of metallized aggregates after reduction is as high as 840. 4 N/ P,which is significantly better than traditional binders,and fully meets the strength requirements of converter furnace ( >800 N/ P). Thermodynamic analysis shows that the carbothermal reduction reaction of zinc-containing phases such as zinc ferrite can be carried out spontaneously above 600 ℃ at a vacuum of 10 Pa,and the volatilization removal of zinc can be significantly promoted when the temperature rises to 1 100 ℃. The results can provide an effective process parameters and binder selection basis for the preparation of high-performance carbon-containing briquettes from zinc-containing solid waste in iron and steel metallurgy.