Method for detecting water yield of steel hot-pressed block

Abstract

The invention relates to a method for detecting the water yield of hot-pressed steel blocks, which comprises the following steps of: sampling from a vehicle with the hot-pressed steel blocks, taking one hot-pressed steel block as a sample block on one vehicle, grouping the hot-pressed steel blocks into a sample block group when the number of the obtained sample blocks reaches a specified value, and drilling scrap iron at the upper, lower, left and right points of each sample block; then gathering a group of scrap iron and putting the scrap iron into the crucible; melting the scrap iron by using the high-frequency induction furnace with regulating the current continuously in the melting process to reduce the splashing of the scrap iron in the melting process is reduced; then turning off theinduction furnaceafter slag and iron are separated through heating, moving out and cooling the crucible after the temperature reaches a certain degree, and breaking the crucible to take out the ironblock; and finally, removing impurities on the surface of the iron block, and calculating the water yield of the iron block. According to the method, group sample preparation is carried out, so that the phenomenon of large error caused by non-uniform materials is avoided, and the calculation precision of the water yield of the steel hot-pressed block is improved.

Description

technical field [0001] The invention relates to the technical field of steelmaking, in particular to a method for detecting the water yield of hot-pressed steel blocks. Background technique [0002] Hot briquette iron is produced by direct reduction technology of fine ore. The grade of iron ore is increased to 67.5-68% through beneficiation. Natural gas is used as the reducing gas, and the reformed natural gas is processed into H2 and CO. The ore and the reducing gas flow in reverse, and after four-stage reduction, sponge iron is obtained, and then hot-pressed to obtain the final product - hot-pressed iron , which contains 92%-93% of total iron, 1-1.1% of carbon, 0.01% of harmful elements, and the content of powdered substances is less than 2%. Hot-pressed iron has the common characteristics of ordinary sponge iron: high purity, low harmful impurity content, which is conducive to the production of high-quality steel, uniform quality, high strength, low pulverization rate, ...

AI Technical Summary

Problems solved by technology

[0004] For this reason, the present invention provides a method for detecting the water yield of hot-pressed steel blocks to overcome the problem of inaccurate detection results of hot-pressed iron blocks in the prior art

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