In the chromite slag drying project in South Africa, Xinmiao Machinery faced extreme working conditions of high temperature, high humidity and high corrosion. The company adopted high temperature resistant and anti-corrosion materials and multi-stage preheating design to ensure that the equipment can maintain a high-efficiency drying effect with a moisture content of 0.38% when it runs continuously for 27 months without major repairs. The successful implementation of this project not only verified Xinmiao Machinery's engineering capabilities in extreme environments, but also provided reliable drying solutions for global mining customers.