Method for detecting scrap steel constituent in stainless steel

A technology for composition detection and stainless steel, applied in the field of stainless steel, can solve the problems of excessive inclusion content in molten scrap, shorten the smelting time, reduce the consumption of refractory materials, and avoid mismatches
CN101271095BInactive Publication Date: 2010-06-09BAOSHAN IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BAOSHAN IRON & STEEL CO LTD
Publication Date
2010-06-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a detection method of components of stainless steel waste steel, which pertains to the detection process of the components of the stainless steel waste steel. In the method, the mixing ratio by weight percentage of 30 to 50 percent of stainless steel waste steel, the mixing ratio by weight percentage of 12 to 17 percent of chromium-iron alloy, the mixing ratio by weight percentage of 1 to 3 percent of nickel and the mixing ratio by weight percentage of 37 to 50 percent of dephosphorizing liquid iron are added at the batching stage; the oxygen blowing amount is controlled at 0 to 6m<3> / t at the melting stage, 1.0 to 2.0kg / t of ferrosilicon powder is injected at the reduction stage, 1.5 to 3.0kg / t of ferrosilicon is added, and contents of chromium and nickel in the waste steel are finally calculated by utilizing the contents of the chromium and the nickel in the steel liquid, yields of the chromium and the nickel in an electric furnace and structure of raw materials. The detection method dilutes inclusions of the stainless steel waste steel, thus reducing the impact of the inclusions on forming the steel liquid by melting by the electric furnace, reducing power consumption used in the melting by the electric furnace, shortening the smelting period and further reducing the impact of melting down of the stainless steel waste steel on the normal production when the detection of the components is carried out.
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Description

technical field

[0001] The invention relates to stainless steel technology, in particular to a component detection process of stainless steel scrap. Background technique

[0002] According to relevant statistics, in 2005, the nickel content of domestic stainless steel scrap was also more than 80,000 tons, and it will reach more than 150,000 tons in 2010 (exceeding the current domestic production volume); The annual output will reach more than 480,000 tons. Therefore, it is very important for the healthy development of the domestic stainless steel industry to pay attention to the recycling of stainless steel scrap. The source of stainless steel scrap is complex, and its composition uniformity is very poor. The difficulty of accurately determining the composition of stainless steel scrap has always troubled various stainless steel smelting companies. At present, the more commonly used method is to extract a certain proportion of purchased stainless steel scrap and melt it in ...

Claims

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