基于烧结复合返矿分流的混合工艺应用

Application of Mixed Process Based on Splitting of Sintering Composite Returns

采用烧结原料先润湿、混匀、消化,然后再与返矿共同制粒的实验室实验和工业化应用,研究了烧结复合返矿分流的“强混+消化+制粒”工艺对混合制粒效果以及烧结经济技术指标的影响。结果表明,与传统混合工艺相比,烧结复合返矿分流的“强混+消化+制粒”工艺能够提高混合料混匀效果,实验室研究平均粒径提高0.56 mm,烧结指标也得到改善,烧结速度提高了2.99 mm/min,成品率提高了0.11%,转鼓强度提高0.01%,烧结机利用系数提高0.24 t/(m^(2)·h);工业实验结果显示,烧结矿平均粒径提高0.46 mm,利用系数提高0.07 t/(m^(2)·h),成品率提高了0.08%。

Laboratory experiments that raw materials for sintering are first wetted,mixed,digested,and then granulated with ore returns are conducted and applied in industrial production.The influences of the"intensive mixing+digestion+granulation"process of the split sintering composite returns on the mixed granulation effect and sintering economic and technical indicators are studied.The results show that compared with traditional mixing processes,the"intensive mixing+digestion+granulation"process of the split sintering composite returns can improve the mixing effect of the mixture,increase the average particle size by 0.56 mm and improve the sintering indexes in the laboratory experiments.The sintering speed has increased by 2.99 mm/min,the yield has increased by 0.11%,the tumbler strength has increased by 0.01%,and the utilization coefficient of the sintering machine has increased by 0.24 t/(m^(2)·h);The industrial experiment results show that the average particle size of sintered ore has increased by 0.46 mm,the utilization coefficient has increased by 0.07 t/(m^(2)·h),and the yield has increased by 0.08%.