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Electro-slag re-melting slag and preparation method thereof

An electroslag remelting and content technology is applied in the field of metallurgical auxiliary materials to achieve the effects of reducing the introduction of nitrogen, saving the cost of steelmaking, and stabilizing the chemical composition

Inactive Publication Date: 2013-03-27
XIXIA HENGGUAN METALLURGICAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of these slag systems is that it contains CaO and is easy to absorb water, so great care must be taken to keep the slag dry to prevent molten steel from absorbing hydrogen and increasing oxygen

Method used

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  • Electro-slag re-melting slag and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The electroslag heavy melting slag of the present invention is made up of the raw material of following percentage by weight:

[0030] Fluorite 20%, bauxite 40%, high calcium lime 30%, fused magnesia 5%, silica 5%.

[0031] Its preparation method is:

[0032] ⑴. Inspection: For each raw material, inspect the raw materials that meet the requirements according to the requirements of their respective component contents;

[0033] ⑵.Fine grinding: pass the raw materials that meet the requirements through the crusher and Raymond mill to produce fine powder with a particle size of more than 100 mesh;

[0034] ⑶. Proportion: Mix the above-mentioned fine powders evenly according to the composition ratio;

[0035] ⑷. Ball making: the mixed raw materials are made into balls with a particle size of 10-30mm through a dry pressing ball machine;

[0036] ⑸.Drying: bake the above-mentioned balls with a particle size of 10-30mm;

[0037] ⑹. Electrofusion: Put the baked ball into the...

Embodiment 2

[0045] The electroslag heavy melting slag of the present invention is made up of the raw material of following percentage by weight:

[0046] Fluorite 20%, bauxite 35%, high calcium lime 30%, fused magnesia 5%, silica 10%.

[0047] Its preparation method is with embodiment 1.

Embodiment 3

[0049] The electroslag heavy melting slag of the present invention is made up of the raw material of following percentage by weight:

[0050] Fluorite 25%, bauxite 35%, high calcium lime 30%, fused magnesia 5%, silica 5%.

[0051] Its preparation method is with embodiment 1.

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Abstract

The invention provides electro-slag re-melting slag, consisting of the following components in percentage by weight: 20%-25% of fluorite, 35%-40% of bauxite, 30%-35% of high-calcium lime, 3%-8% of fused magnesite and 5%-10% of silica. A preparation method of the electro-slag re-melting slag comprises the following process steps of checking, finely grinding, proportioning, balling, drying, electrically smelting, deslagging, cooling, crashing, checking, packaging and storing. The electro-slag re-melting slag provided by the invention can be used for reducing the introduction of hydrogen, oxygen and nitrogen, and has the advantages of ensuring the surface smoothness of cast ingots and low power consumption.

Description

technical field [0001] The invention belongs to the technical field of metallurgical auxiliary materials, and relates to electroslag heavy melting slag, and also relates to a preparation method of the electroslag heavy melting slag. Background technique [0002] At present, in the metallurgical industry, the commonly used electroslag remelting slag systems are binary slag systems and ternary slag systems. The binary slag system is CaF 2 -TiO 2 Slag, whose representative component is CaF 2 70%+Al 2 o 3 30%. This kind of slag has good comprehensive process performance, adapts to different process conditions, has certain desulfurization and de-inclusion capabilities, and is suitable for remelting ball bearing steel, alloy structural steel, high-speed tool steel, mold steel and stainless heat-resistant steel, etc. But this kind of slag has some disadvantages, such as the slag composition is not at the low-melting eutectic point, the melting point is high; the electrical co...

Claims

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Application Information

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IPC IPC(8): C22B9/18
Inventor 张国强
Owner XIXIA HENGGUAN METALLURGICAL MATERIAL CO LTD
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