绿色矿冶

A zinc smelting company uses a rotary kiln method to recover zinc from the leaching residue produced by the wet system. This paper introduced the process principle, process flow and composition control standards of leaching residue and coke powder in a large rotary kiln production system in China, and further extended the influence of rotary kiln tail temperature and system pressure on production and control essentials. The formation principle of the middle and rear coking of the rotary kiln, the influence on production and the operation method of eliminating the ringing of the chemical kiln were discussed in depth. In addition, the key equipment and process parameters of the subsequent treatment process of rotary kiln, namely waste heat boiler, electric dust collection and zinc oxide desulfurization process, were analyzed, and the problems and solutions that were easy to occur in production were pointed out, in order to provide practical equipment, process and operation experience for the rotary kiln production system of zinc smelting industry.