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为了提高冶炼低磷钢和普通钢种的经济效益,日本住友金属公司鹿岛厂开发了简单精炼法(SRP)的铁水除磷新法,特点如下: 1、用2座250吨的顶底复吹转炉作反应器,即一座脱磷,一座脱碳,进行2阶段逆流容器操作; 2、用脱碳炉获得的P_2O_5含量低的块渣作为脱磷炉的脱磷剂,使石灰总耗量最低,并实现稳定快速精炼; 3、在脱碳炉中精炼,通过控制氧流量和脱碳率提高锰的回收率。铁水脱磷处理工艺,原先是用于生产低磷钢的预处理;目前该技术广泛用于生产普
In order to improve the economic benefits of smelting low-phosphorus steel and ordinary steel, Japan’s Sumitomo Metal Co., Ltd., Kashima plant developed a new method of simple refining (SRP) of molten iron and phosphorus removal, features are as follows: 1, with two top- Converter as a reactor, that is, a dephosphorization, a decarbonization, 2-stage countercurrent operation of the container; 2, with the decarburization furnace P205 low content of the residue as a dephosphorization furnace dephosphorizer, the lowest total lime consumption , And achieve stable and rapid refining; 3, refined in the decarburization furnace, by controlling the oxygen flow rate and decarburization rate increased manganese recovery. Hot metal dephosphorization process, was originally used to produce low-phosphorus steel pretreatment; currently the technology is widely used in the production of general