China Nonferrous Metallurgy

Roaster is the core piece of equipment for zinc smelting and was initially introduced into China from abroad. Based on absorption of the associated technology, China ENFI made multiple optimizations and developed the first 152m² large fluidized roaster of independent intellectual property rights in China. Thereafter, a number of roasting systems have been up and run in China, realizing the promotion and penetration of technology for Chinese-made large roaster. Design features of the 152m² large fluidized roaster include optimized design of roaster roof in accordance with temperature field model and stress field model, grate hood of special design, roof of integral tamping patented technology and new ramming materials to replace brickwork for the lower part of roaster. Production practices prove that roaster of optimized design is advantageous in low residual sulfur, good product quality, low capital cost, small footprint, stable production operations and convenient for centralized intelligent control and information management. Large roaster is the future trend of zinc smelting equipment.