论文部分内容阅读
使用CaO-SiO_2-Al_2O_3合成渣与磁铁矿、石墨粉制备含碳球团,考察了球团中渣相成分、渣量以及碳含量对铁水渗碳量的影响,并探讨了含碳球团内铁的熔融渗碳行为和机理。结果表明,熔融渗碳分为熔融还原渗碳以及铁熔体聚合过程渗碳2个阶段,前一阶段熔渣中Fe2+含量与铁的渗碳量处于动态平衡过程,主要受熔渣化学成分的影响;后一阶段的渗碳过程决定铁的物理渗碳极限,主要与铁、碳颗粒的接触条件有关,且熔渣中Fe2+的还原极限与渣相碱度和SiO_2绝对含量有关,铁的熔融渗碳量(质量分数)可以达到4%左右,满足铁锍分离要求。
The effects of slag composition, slag amount and carbon content on the amount of carburizing of hot metal were investigated by using CaO-SiO_2-Al_2O_3 synthesis slag, magnetite and graphite powder to prepare carbon-containing pellets. The effects of carbon-containing pellets Melting and Carburizing Behavior and Mechanism of Internal Iron. The results show that the molten carburization is divided into two stages: carburizing and carburizing, and carburizing during the process of iron melt polymerization. In the previous stage, the content of Fe2 + and carburizing of iron are in a dynamic equilibrium process, which is mainly affected by the chemical composition ; The carburization process of the latter stage determines the physical carburizing limit of iron, which is mainly related to the contact conditions of iron and carbon particles, and the reduction limit of Fe2 + in slag is related to the basicity of slag phase and the absolute content of SiO2. The melting of iron The amount of carburizing (mass fraction) can reach about 4% to meet the requirements of ferrosulfon separation.