莱钢2×265m^2烧结机节能减排实践

Energy Saving and Pollution Reducing Practice of 2×265m^2 Sintering Machines in Laiwu Steel

通过推广应用热风烧结、低温低负压点火、低温烧结等多项新技术,烧结抽风系统治理漏风、环保设备改造等设备技术改造,以及合理使用固体废弃物、优化原料结构等措施的实施,莱钢2×265m2烧结机系统技术经济指标稳定提升,工序能耗由投产初期的70kg标煤/t以上降至约56kg标煤/t,粉尘排放浓度降低到了80～90mg/m3。同时建议建立稳定的原料结构制度,继续完善低温烧结技术并探索高TFe低SiO2烧结生产技术,以进一步降低烧结工序、炼铁工序成本。

Through promoting the uses of many new technologies such as hot air sintering, low temperature and low suction pressure ignition and low temperature sintering; administering air leakage of draught system, transforming environmental and ether equipment, using solid wastes in reason and improving raw material structure etc, the technical and economic indexes of 2 x 265 m^2 sintering machines in Laiwu Steel improved steadily. The process energy consumption reduced from more than 70 kg standard coal per ton sinter in initial stage to about 56 kg standard coals per ton sinter. The dust emission concentration decreased to between 80 and 90 mg/m^3. At the same time, the authors suggest establishing a stable raw material structure, continuing to improve the low-temperature sintering technology and exploring sinter production technology by high TFe and low SiO2 for decreasing the costs of sinter process and ironmaking process.