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Current stabilizer sintering technology

The technology of a flow stabilizer and process is applied in the field of continuous casting technology in iron and steel production, which can solve the problems of low life of the flow stabilizer in the tundish, and achieve the effects of less product cracks, good thermal crack resistance and improved life.

Inactive Publication Date: 2012-09-05
SHANDONG IRON & STEEL CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem of low service life of the current stabilizer in the tundish in the prior art, the present invention provides a firing process of the current stabilizer with reasonable design, advanced technology, high product yield and long service life

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0043] A sintering process for a current stabilizer, the steps are: crushing magnesia blocks, screening, batching, dry mixing, wet mixing with water, vibration molding, demoulding, natural curing, low-temperature drying, high-temperature sintering, and tundish drying under the table Roasted, using a front tundish baked in which:

[0044] 1) smash

[0045] Use special crushing equipment for refractory materials to crush the original blocks of magnesia with different sizes, and at the same time carry out fine powder processing as needed;

[0046] 2) Screening

[0047] Use a vibrating screen to sieve the broken refractory blocks into particles with a particle size of ≤1mm, 1-3mm, 3-5mm, and 5-8mm;

[0048] 3) Ingredients

[0049] The ingredients are formulated according to the following weight percentages: high-purity magnesia and fused magnesia are base materials, the addition amount is 95% (high-purity magnesia 20%, fused magnesia 80%), the addition amount of silicon micropo...

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Abstract

The invention provides a firing process for a current stabilizer, which belongs to the technical field of continuous casting technology in steel production and comprises the steps of crushing, screening, batching, dry mixing, wet mixing by adding water, vibration forming, demoulding, natural curing, low temperature drying, high temperature firing, tundish baking under a table, and tundish baking before using to obtain the current stabilizer. The firing process has the characteristics of reasonable design, advanced technology, high product yield and long service life.

Description

technical field [0001] The invention relates to a firing process of a current stabilizer for a continuous casting tundish, belonging to the technical field of continuous casting processes in steel production. Background technique [0002] At present, the domestic continuous casting tundish current stabilizer mainly has the following problems: [0003] 1. Adopt low-temperature drying process, and the drying temperature is below 200°C. [0004] 2. Prefabricated parts are prone to cracks, and the yield is low, about 70%. [0005] 3. The service life is low, between 20-36 hours. During use, it is easily eroded by high-temperature molten steel, broken and floating, and the bottom is easy to penetrate in the later stage of use, causing bag-wearing accidents, damaging equipment, and affecting production. [0006] CN2541085 (01262010.6) discloses a continuous casting tundish current stabilizer, and its background technology describes the application of the continuous casting tundi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 吕铭袁本明张永青费燕王兆成鹿洪利刘纯星王玉春
Owner SHANDONG IRON & STEEL CO LTD
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