Properties of New Mullite-SiC Bricks for CDQ Shafts

Currently the service life of CDQ shafts in China is mainly restricted by the properties of the inclined flue bricks.In this work,based on the systematic analysis of the damage mechanism of inclined flue refractories,high performance mullite-SiC bricks were developed.The bricks were produced by corundum,andalusite,SiC and other high purity raw materials.Metal silicon and alumina ultra micropowder were added to form dispersion multi-phase structure,fortifying the matrix and improving the microstructure.The products have excellent properties such as low porosity,high density,good wear resistance,high refractoriness under load,and good thermal shock resistance.The products can replace the ordinary mullite-SiC bricks and obtain a good service life.

干熄炉斜道支柱检修方案及实施

对悬吊技术在干熄炉斜道支柱检修工作中的运用进行介绍，为昆钢干熄炉斜道支柱的检修提供了一种技术解决方案。

适用于连续高温物料的竖炉进料装置

利用干熄焦工艺原理开发了适用于连续高温物料的竖炉进料装置。该进料装置以旋转布料器为核心,通过增加单环布料、多环布料、落料点调节等功能实现竖炉的均匀布料。将主要结构设置在炉外,实现了设备长寿化,维护检修也更安全便捷。

140 t/h干熄焦循环风机国产化研制

干熄焦循环风机是干熄焦动力中枢装置,其稳定性和耐磨要求高,长期以来被进口产品所垄断。本文详细介绍140 t/h干熄焦循环风机国产化研制的工作,从气动设计和结构设计两方面解决高效设计、轴承选择、轴封选择、耐磨设计等国产化研制难点。根据现场使用结果来看,研制的风机轴承温度、振动、风机效率等情况良好,使用性能达到国外进口风机水平,国产化研制较成功。

干熄焦模型技术在烧结矿热力学的应用研发

通过对竖炉型烧结矿冷却及余热回收技术的研发,解决了其主要技术难题,基于干法熄焦技术原理,构建了竖炉型烧结矿冷却及余热回收工艺。研究表明,采用竖炉型烧结矿冷却及余热回收技术可有效提升热烧结矿余热资源的回收率与再转化效率,降低烧结生产的工序能耗。