In order to solve the problems encountered in the process engineering of rotary hearth furnace,and further optimize the process flow and technical parameters,the physical and chemical properties of zinc-containing dust raw materials are determined by chemical analysis,and the influencing factors of pelletizing performance and metallization rate in reduction process are analyzed by control variable method. The formation mechanism of adhesive in heat exchange system is deduced by analyzing the chemical composition and phase composition of secondary dust,and the energy efficiency of different gases used in rotary hearth furnace is compared and analyzed. The results show that when the moisture mass fraction of mixed dust is 12% and bentonite is added with 5%,the production process of strong mixer + counter-bar pressing ball can meet the requirements of pelletizing system. Under the condition of drying and dewatering at 211 ~ 314 ℃,the critical water content of green pellets is 3.35%;When the temperature is higher than 1 300 ℃,the metallization rate of pellets can reach over 85%,and when the n(C)/n(O) ratio is higher than 0.9,the metallization rate of pellets can reach over 70%. Reducing KCl mass fraction in green pellets can effectively solve the problems of secondary dust sticking and blocking in heat exchange system. Under the same process conditions,the energy consumption of blast furnace gas,converter gas and generator gas is about 15% ~ 20% higher than that of coke oven gas. The basic data can provide references for the process design and application of rotary hearth furnace.