Method for detecting effluent rate of slag steel type waste steel by adopting intermediate frequency furnace

Abstract

The invention discloses a method for detecting the effluent rate of slag steel type scrap steel by adopting an intermediate frequency furnace, the slag steel type scrap steel with poor electrical conductivity is melted by adding fluxing scrap steel into the intermediate frequency furnace, and then the effluent rate of the slag steel type scrap steel is calculated, the method is suitable for metallurgical raw material inspection, the effluent rate of the slag steel type scrap steel can be directly calculated, and the method is suitable for industrial production. Accurate basis is provided for quality judgment of the steel scrap, the current situation that no reliable judgment basis exists for the steel scrap is changed, adulteration of the steel scrap is avoided, the quality of the steel scrap is improved, and loss is reduced for enterprises.

Description

technical field [0001] The invention belongs to the technical field of metallurgical raw material inspection, in particular to a method for detecting the water yield of slag steel scrap by using an intermediate frequency furnace. Background technique [0002] In the production process of converter and electric furnace steelmaking, scrap iron and steel is an important production raw material, which has an important impact on the consumption and cost of iron and steel materials, and the stability of the smelting process. In the regulations on the quality acceptance of scrap steel purchased by iron and steel enterprises, it is difficult to directly and accurately distinguish the quality of scrap steel with the naked eye, especially for slag steel scrap with high slag content, such as large slag steel, small slag steel, particle steel , slag iron, etc. [0003] Water yield is the most direct quality index to evaluate the quality of scrap steel. For slag steel scrap, due to its...

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Problems solved by technology

For slag-steel steel scrap, due to its poor quality stability, there are currently some ways to measure the water yield by melting in a small crucible (less melting), or analyze the TFe content by drilling samples, etc. The melting test and drill sample analysis cannot accurately reflect the overall quality level

Due to the large number of internal voids, the density measured by the drainage method cannot reflect the level of iron content.

The test results of the above methods cannot be directly used as the basis for quality judgment due to poor representativeness and other reasons. It is known that the acceptance and judgment of slag-steel scrap steel are evaluated after the use effect, but due to the large amount of slag in slag-steel scrap steel, it cannot be used in large quantities. Use, resulting in a low smelting ratio, and the use is greatly affected by the process, steel type, molten iron and other raw materials, resulting in a difficult post-evaluation of its quality

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