Test method for matching degree of smelting performance of blast furnace charges

Abstract

The invention discloses a testing method of matching degree of high furnace charge smelting performance, and belongs to the technical field of high furnace steelmaking. The testing method includes steps of combining a coke sample, a sintering ore sample, and a pellet sample. Among the to-be-tested samples, the coke and the sintering ore, the coke and the pellet sample, and the sintering ore and the pellet ore can be contacted face to face during the smelting process. After smelting, cutting the to-be-tested sample and observing the smelting degrees of the combination faces of the coke and sintering ore, the coke and the pellet ore, and the sintering ore and the pellet ore; accordingly analyzing the matching condition of the smelting performance of the coke and ore. The testing method is simple in operation, exact in testing result, and provides scientific and effective basis for the high furnace dosing and effectively guides the smooth performance of the high blast.

Description

technical field [0001] The invention relates to the selection of blast furnace raw materials, belongs to the technical field of blast furnace steelmaking, and in particular relates to a test method for matching degree of smelting performance of blast furnace materials. Background technique [0002] Blast furnace material plays a vital role in ensuring the smooth operation of the blast furnace. Both the basic theory of ironmaking and the practice of blast furnace production have proved that optimizing the quality of raw materials and metallurgical properties of blast furnace ironmaking is not only the key to achieving high efficiency, large-scale, long life, and The prerequisite for energy saving and emission reduction is also the basic condition for increasing coal injection ratio and reducing coke ratio and fuel ratio. The so-called optimization of charge quality is to improve the quality of charge: high-grade furnace ore, less slag and improved raw fuel performance, etc. ...

AI Technical Summary

Problems solved by technology

[0004] At present, the method of making and testing iron ore reflow performance samples is as follows: select 10-12.5mm iron ore and coke, spread them into the crucible according to a layer of coke and a layer of ore, and then conduct a high-temperature performance test. It can only reflect the smelting performance of a single ore. Since the conditions and raw materials of each test will fluctuate, this test cannot simultaneously reflect the matching effect of the smelting degree and remelting performance of different iron ore raw materials.

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