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Corundum spinel repair material for carbonless steel ladle working lining and preparation method thereof

A corundum spinel, carbon-free ladle technology, applied in the direction of improving process efficiency, can solve the problems of large impact on the service life of repair materials and linings, unstable adhesion performance, poor adhesion of repair materials, etc., to increase strength and Anti-slag erosion performance, good anti-slump effect, and the effect of improving construction performance

Active Publication Date: 2022-08-09
WUGANG REFRACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the thermal gunning of the ladle wall used in China is limited by factors such as gunning construction conditions and sintering time, and its service life is relatively low.
When repairing in a cold state, the adhesion of the repair material is poor, and some adhesion properties are unstable, easy to fall and slide, and the rebound rate is high when thrown with a shovel, and some parts are easy to fall off after baking. Great impact on service life

Method used

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  • Corundum spinel repair material for carbonless steel ladle working lining and preparation method thereof
  • Corundum spinel repair material for carbonless steel ladle working lining and preparation method thereof
  • Corundum spinel repair material for carbonless steel ladle working lining and preparation method thereof

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Embodiment Construction

[0026] The following describes the implementation of the present invention in detail with reference to the examples, but they do not constitute a limitation of the present invention, but are only examples. At the same time, the advantages of the present invention will become clearer and easier to understand by illustrating the advantages.

[0027] The corundum spinel repairing materials for carbon-free ladle working linings of Examples 1 to 4 of the present invention and the repairing materials of Comparative Examples 1 to 3, the formulas in parts by mass are shown in Table 1.

[0028] Table 1

[0029]

[0030] The preparation methods of the corundum-spinel repair materials for carbon-free ladle working linings of Examples 1 to 4 of the present invention and the repair materials of Comparative Examples 1 to 3 include the following steps: batching according to the ingredients and contents of the raw materials, First, the matrix material (corundum composite with particle siz...

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Abstract

The invention discloses a corundum-spinel repair material for carbon-free steel ladle working lining and a preparation method thereof. The repair material includes the following components in parts by mass: 30-80 parts of corundum composite material, 15 parts of aluminum-magnesium spinel ~45 parts, 2-10 parts of alumina micropowder, 3-8 parts of pure calcium aluminate cement, 1-7 parts of plasticizer, 0.1-0.3 parts of water reducing agent, 0.03-0.3 parts of explosion-proof fiber. The corundum-spinel repair material for carbon-free ladle working lining of the invention has good adhesion performance, appropriate spreading performance, high medium and high temperature strength, good overall performance, excellent anti-scour and anti-erosion performance, long service life, and economical resources and reduce carbon emissions.

Description

technical field [0001] The invention relates to the technical field of repairing materials for working linings of ladle, in particular to a corundum-spinel repairing material for working linings of non-carbon ladles and a preparation method thereof. Background technique [0002] With the development of metallurgical technology, especially the refining technology outside the furnace, the operating conditions of the ladle are becoming more and more severe, and the prolongation of the refining time directly affects the service life of the ladle. Especially the joint part of the carbon-free working lining brick and the magnesia-carbon slag line brick, due to the inconsistent thermal expansion properties of the material, cracks appear in this part, which become grooves after being washed and eroded by molten steel and slag, which becomes a bottleneck restricting the extension of the life of the ladle. Both steel mills and refractory contractors, from the perspective of increasing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/3222C04B2235/3217C04B2235/5208C04B2235/447C04B2235/77C04B2235/96C04B2235/9615Y02P10/20
Inventor 姚亚双雷中兴
Owner WUGANG REFRACTORY CO LTD
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