Melting method in electric steel making
专利汇可以提供Melting method in electric steel making专利检索，专利查询，专利分析的服务。并且PURPOSE: To reduce the melting time of raw material by spraying the melting accelerator containing a large amount of volatiles on the furnace bottom after tapping, charging the raw material composed primarily of iron scrap thereon then porforming current supplying and O
2 blowing.
CONSTITUTION: Semi-coke 65%, anthracite coal 25W50%, iron powder 3W7% and lignin binder 3W5% based on weight are mixed and molded to prepare the melting accelerator containing 15% or more of volatiles. Next, this melting accelerator is sprayed on the furnace bottom after tapping, after which the raw material composed primarily of iron scrap is placed thereon, thence current supplying and O
2 blowing are done. As a result of this, the volatiles in the melting accelerator are first evaporation-ignited to evolve heat and this together with the arc heat from the upper part promote the formation of the molten metal pool in the hearth, thereby preventing the over-oxidation of iron scrap and eventually reducing the melting time and power consumption. Here, the amount of spraying of the melting accelerator is 2W6kg per ton of iron scrap.
COPYRIGHT: (C)1980,JPO&Japio，下面是Melting method in electric steel making专利的具体信息内容。
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