Test method for matching degree of smelting performance of blast furnace charges
A test method and matching technology, applied in the field of blast furnace steelmaking, can solve the problem of not being able to simultaneously reflect the matching effect of different iron ore raw material smelting degrees and reflow properties, and achieve the effects of simple operation and accurate measurement results.
Active Publication Date: 2019-09-24
武汉钢铁有限公司
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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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[0022] In order to better explain the present invention, the main content of the present invention is further clarified below in conjunction with specific examples, but the content of the present invention is not limited to the following examples.
[0023] The invention discloses a test method for matching degree of smelting performance of blast furnace charge, which comprises the following steps:
[0024] 1) Prepare the sample to be tested: the sample to be tested is a combined sample of a coke sample 1 with a height of 40-60 mm and an iron ore sample with a height of 13-17 mm, and the coke sample 1 is a solid cube structure, such as figure 1 As shown, the cube structure is preferably a cube structure, and the height of the cube structure is preferably 50mm. A groove is provided along one side of the cube. When the surfaces are in contact with each other, a coke-mineral air gap 5 is formed between the surfaces; in the embodiment of the present invention, the preferred groove...
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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. ...
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IPC IPC(8): G01N25/00
Inventor肖志新陈令坤卢正东余珊珊
Owner武汉钢铁有限公司