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Continuous casting crystallizer function protection material special for high-oxygen enamel steel

A technology of continuous casting mold and protective material, applied in the field of metallurgical auxiliary materials, can solve the problems of various oxide inclusions, increase the brittleness of steel, etc., and achieve the effect of strong wear resistance and good anti-scale explosion performance.

Active Publication Date: 2017-05-31
HENAN XIBAO METALLURGICAL MATERIALS GROUP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0008] 1. The oxygen content in molten steel is high, and oxygen will increase the brittleness of steel. Oxygen often exists in the form of ferrous oxide and manganese oxide in steel, and it is easy to form a variety of oxide inclusions

Method used

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  • Continuous casting crystallizer function protection material special for high-oxygen enamel steel
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  • Continuous casting crystallizer function protection material special for high-oxygen enamel steel

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preparation example Construction

[0044] The preparation method of the special continuous casting crystallizer functional protection material for high-oxygen enamel steel of the present invention comprises the following steps:

[0045] Step S1: Weigh the above-mentioned raw materials for weighing and batching, put them into a mixer and mix for 40-50 minutes; then add them to a stirring mill, mix with water, grind, and sieve to obtain a slurry with a particle size of ≤1mm;

[0046] Step S2: The slurry is pumped through the slurry pipeline by the ceramic plunger slurry to the prilling tower for atomization and drying, and the slurry changes from liquid to solid to form hollow particles;

[0047] Step S3: Sieve the hollow particles to obtain qualified material, cool and pack.

[0048] The chemical composition of the premelt used in the present invention and its weight percentage are: SiO 2 25.0~35.0%, CaO35.0~46.0%, Al 2 o 3 2.0~7.0%, R 2 O4.0~15.0%, F ~ 2.0~8.0%, MgO2.0~6.0%, of which R 2 O=K 2 O+Na 2 O+...

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Abstract

The invention discloses a continuous casting crystallizer function protection material special for high-oxygen enamel steel and relates to metallurgical auxiliary materials. The continuous casting crystallizer function protection material comprises, by weight, 55.0%-62.5% of pre-molten materials, 4%-6% of lithium carbonate, 4%-6% of light-burned white alkali, 1%-3% of bentonite, 8%-10% of high fluorite powder, 1%-4% of high alumina, 4%-6% of cryolite, 3%-5% of sodium fluoride, 2%-4% of albite, 2%-4% of fine glass powder, 0-2% of imported carbon black and 0-2% of graphite, and the sum of the content of all the raw materials is 100%. The continuous casting crystallizer function protection material is special for the high-oxygen enamel steel and can be appropriately spread in a crystallizer, and no sintering and caking phenomenon occurs; melting is uniform, and a stable three-layer structure is achieved; the thickness of a liquid slag layer is 8-12 mm; the steel slag consumption quantity is 0.3-0.5 Kg / ton; and the surface quality, the subsurface quality and the inner quality of a casting blank are good.

Description

technical field [0001] The invention relates to metallurgical auxiliary materials, in particular to a special continuous casting crystallizer function protection material for high-oxygen enamel steel. Background technique [0002] On November 1, 2016, it was learned from the Ministry of Industry and Information Technology that the "Industrial Technology Innovation Capability Development Plan (2016~2020)" was officially released, aiming to break through common key technologies in key areas, strengthen the transformation of scientific and technological achievements into real productivity, and improve the performance of key links and key areas. Innovation capabilities, promote the deep integration of the two industries, stimulate the new kinetic energy of "mass innovation and mass innovation", and promote my country's transformation from a manufacturing power to a manufacturing power. The "Plan" also puts forward the key directions for the development of some industries in the i...

Claims

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Application Information

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IPC IPC(8): B22D11/111
CPCB22D11/111
Inventor 李伟锋李书成周彬张鹏
Owner HENAN XIBAO METALLURGICAL MATERIALS GROUP
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