Abstract:The waste heat boiler of flash furnace is an important equipment in flash smelting process. Its operation status is directly related to the production stability of flash furnace production. In recent years, the corrosion leakage of FFB mostly occurs in the high temperature area of FFB radiation part. Therefore, it is necessary to improve the corrosion resistance of the furnace tubes in the high temperature area of FFB. Through the experiment, the high temperature corrosion mechanism of FFB and the main factors causing the corrosion of FFB tubes are found, and the effective high temperature corrosion prevention measures are given in combination with the production practice. These measures have been applied to production practice and achieved good results, which effectively guaranteed the stable and smooth production of FFB and flash furnace.