论文部分内容阅读
我厂长期以来一直是使用自熔性烧结矿单一的炉料结构,在高炉冶炼方面曾经获得较好的效果.但是,自熔性烧结矿强度差、粉末多、粒度不均匀、氧化亚铁高和高温性能差,致使进一步降低焦比和提高产量受到影响.由实验室和工业性试验表明,熔剂性烧结矿却具有良好的冶金性能. 1982年11月5日至30日在两座高炉上同时进行了高碱度烧结矿加硅石的新炉料结构工业性试验,在试验过程中使用碱度1.60～1.70的烧结矿,其冶金性能有了较大的提高,转鼓指数提高3～5%,氧化亚铁降低3.40%,还原率提高8%,低温还原粉化率降低5%,软化温度提高40℃,并且粒度均匀.在冶炼铸造生铁比重占66%的情况下,
For a long time, our factory has been using a single charge structure of self-fluxing sinter, which has obtained good effect in blast furnace smelting.However, the self-fluxing sinter has poor strength, multi-powder, uneven particle size, high ferrous oxide Poor high-temperature performance, resulting in further reduce the coke ratio and increase the yield affected by laboratory and industrial tests show that flux sinter has good metallurgical properties November 5, 1982 to 30 on the two blast furnace at the same time The industrial experiment of new charge structure of high alkalinity sinter plus silica was carried out. The sinter with basicity of 1.60-1.70 was used in the experiment, the metallurgical properties of the sinter were greatly improved, the drum index increased by 3 ~ 5% The ferric oxide is reduced by 3.40%, the reduction rate is increased by 8%, the low-temperature reduction and pulverization rate is reduced by 5%, the softening temperature is increased by 40 ℃, and the particle size is uniform.When the proportion of smelting and casting pig iron accounts for 66%