Novel direct continuous casting slag washing mixed material and preparation process thereof
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A technology for straight-up slag washing and mixing materials, applied in the field of new straight-up slag-washing mixed materials and their preparation, can solve problems such as insufficient refining capacity, and achieve the effects of improving slag composition, strong ability to absorb inclusions, and fast melting speed
Inactive Publication Date: 2013-08-14
涟源市飞达冶金炉料厂
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[0003] In my country's iron and steel industry, most of them are small and medium-sized converter iron and steel enterprises, and the casting method is basically based on continuous casting. Some iron and
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[0024] Example 1
[0025] The new straight-up slag washing mixed material of this embodiment is composed of the following components by weight: 5 parts of aluminum powder, 65 parts of alumina powder, 20 parts of quicklime, 6 parts of silicon dioxide powder, and 4 parts of magnesium oxide powder.
[0026] Its preparation process comprises the following steps:
[0027] (1) Ball milling: Weigh the above proportions of aluminum powder, alumina powder, quicklime, silicon dioxide powder, and magnesium oxide powder with a balance, put them into a ball milling tank, and grind them on a roller ball mill for 20 hours at a rotational speed of 1000 r / min. to obtain micron powder;
[0028] (2) Drying: Put the slurry obtained by the roller ball milling in step 1 into a vacuum drying box for vacuum drying, the vacuum degree is 0~-0.35Pa, and the drying temperature is controlled at 35~100 ℃, and the time is 20 ~54h;
[0029] (3) Mixing: The dried micron powder obtained in step 2, except fo...
Example Embodiment
[0032] Example 2
[0033] The new straight-up slag washing mixed material of this embodiment is composed of the following components by weight: 15 parts of aluminum powder, 55 parts of alumina powder, 20 parts of quicklime, 6 parts of silicon dioxide powder, and 4 parts of magnesium oxide powder. The preparation process is the same as that in Example 1.
Example Embodiment
[0034] Example 3
[0035] The new straight-up slag washing mixed material of this embodiment is composed of the following components by weight: 25 parts of aluminum powder, 45 parts of alumina powder, 20 parts of quicklime, 6 parts of silicon dioxide powder, and 4 parts of magnesium oxide powder. The preparation process is the same as that in Example 1.
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Abstract
The invention relates to a novel direct continuous casting slag washing mixed material and a preparation process thereof, and belongs to the field of special-performance alloy and powder metallurgy novel material in metal materials of the novel materials. The novel heating slag washing mixed material comprises the following components in parts by weight: 30-65 parts of aluminum oxide powder, 30-50 parts of quick lime, 1-6 parts of magnesium oxide powder, 0-6 parts of fluorite and 5-6 parts of silicon dioxide powder. The preparation process of the novel heating slag washing mixed material comprises the following steps of: ball-milling the materials in a ball mill to obtain particle powder; press-moulding the ball-milled particle powder by a ball press, smelting in an electric-arc furnace; and adding 5-40 parts of aluminum powder to the molten liquid during a turning down process, and crushing the cooled material into particles. The novel direct continuous casting slag washing mixed material disclosed by the invention can be used for filtering deoxidized desulfurized molten steel very well, so that produced deoxidation products can be caught effectively and modification of impurities in the steel is promoted, so that the purpose of evolving the molten steel is reached.
Description
technical field [0001] The invention relates to a novel straight-up slag washing mixed material and a preparation process thereof, belonging to the field of special-performance alloys among metal materials among new materials and new powder metallurgy materials. Background technique [0002] my country's steel production continues to develop, steel output increases, and the variety and quality of steel have approached or reached the international advanced level. However, converter steelmaking is still the most important steelmaking method in China. The output of converter steelmaking has increased from 121 million tons in 1998 to 540 million tons in 2008, the proportion of converter steelmaking has increased from about 80% in 1998 to about 90% at present. Casting technology has also made great progress. The variety and output of continuous casting steel have continued to increase. The continuous casting ratio has increased from 68.8% in 1998 to about 98.86% in 2008. With the ...
Claims
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