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1.绪言随着新日铁室兰厂中期扩建计划的实施,不锈钢的生产从装备有小型转炉的一炼钢厂到装备有中型转炉的二炼钢厂,并于1977年12月开始了生产。本报告所提供的系采用大型转炉LD—RHOB法熔炼铬铁的技术。 2.熔炼铬铁期间操作分析指标的选择影响熔炼铬铁的操作因素如图1所示。除了操作中事先决定的前提和可以选择的条件外,在熔炼铬铁的操作期间,可以控制的因素是熔池的搅拌强度。因此,熔池搅拌强度的选择是取决于吹炼条件和透入深度(L)与熔池深度(L_0)的比例,即L/L_0被用来作为操作
1. INTRODUCTION With the implementation of the mid-term expansion plan of the Nippon Steel Muroran Plant, the production of stainless steel started from a steelmaking mill equipped with a mini-converter to a second steelmaking plant equipped with a medium-sized converter and started production in December 1977 . The report provides the technology of using a large converter LD-RHOB ferrochrome smelting technology. 2. Analysis of operational indicators during the selection of ferrochrome Melting ferrochrome operating factors affect the selection shown in Figure 1. In addition to the preconditions and optional conditions in the operation, the controllable factor during the operation of ferrochromium melting is the stirring strength of the bath. Therefore, the selection of pool stir strength is dependent on the blowing conditions and the ratio of penetration depth (L) to pool depth (L_0), ie, L / L_0 is used as the operation