大型流态化焙烧炉的开发与应用

Development and application of large fluidized-bed roaster

焙烧炉是锌冶炼的核心设备,国内最早引进国外109 m^(2)焙烧炉进行生产。中国恩菲在消化吸收该技术的基础上,进行了多项改进优化,开发出国内第一台具有自主知识产权的大型152 m^(2)流态化焙烧炉,此后,在国内建成投产多套焙烧系统,实现了国产大型焙烧炉技术的推广和普及。该152 m^(2)流态化焙烧炉根据温度场模型和应力场模型对炉顶进行优化设计,采用了特殊设计的炉栅风帽,炉顶采用整体捣打专利技术,焙烧炉下段采用新型捣打料代替砌砖。生产实践表明,优化设计后的焙烧炉具有焙烧矿残硫低、产品质量好、建设投资低、占地面积小、生产运行稳定、便于集中智能控制与信息化管理的优势,焙烧炉大型化是锌冶炼工艺装备的发展趋势。

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 152 m^(2) 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 Chinesemade large roaster.Design features of the 152 m^(2) 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.