In order to improve the pellets quality of the belt type roasting machine process and to reduce the energy consumption of its process, based on the belt type roasting machine process of Angang, such 3 aspects as upgrading of the belt type roasting machine, optimization of ore proportioning and adding composite binder in pellets production are explored. The results show that, after modification, the utilization coefficient is increased by 0.036 t/m²·h. The unit electricity consumption and the unit gas consumption of pellets production are reduced by 6.02 kW·h/t and 0.165 GJ/t respectively. Through the optimization of ore proportioning, the reduction degree of pellets is increased by 0.4%, the drum strength is increased by 0.5%, and the unit gas consumption is decreased by 0.011 GJ/t. The new composite binder can be used in the pellets production instead of bentonite, and its suitable proportion is from 0.6% to 0.8%. After the application of the composite binder in pellets production, the iron grade of finished ball is increased by 0.58%, the drum strength is increased by 1.3% and the compressive strength is increased by 41 N/P.