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Ladle base brick and production method thereof
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A technology of ladle and mixed material, applied in the field of ladle base brick and its preparation, can solve problems such as increasing production cost, save production cost, improve normal temperature strength index, and improve the effect of corrosion resistance of molten steel
Active Publication Date: 2018-03-16
瑞泰马钢新材料科技有限公司 +1
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[0002] At present, the ladle base brick is mainly made of corundum spinel or corundum. Since the corundum spinel base brick contains more plate-shaped corundum or white corundum, spinel and other stable materials, the corundum spinel base brick The performance is very stable, but as the price of corundum raw materials continues to rise, its production cost is also increasing
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Embodiment 1
[0026] A kind of ladle base brick, is prepared by mixture and added metal aluminum powder and ADS type high-efficiency water reducer, and described mixture comprises the raw material of weight percentage as shown in Table 1, metal aluminum powder, ADS type high-efficiency water reducer The weight is respectively 0.5% and 1.0% of the mixture weight, and the particle diameter of the metal aluminum powder is 325 mesh.
[0027] The preparation method of described ladle base brick is:
[0028] (1) Premix corundum fine powder, α-aluminafine powder, silicon micropowder, metal aluminum powder, and water reducer for 25 to 30 minutes to obtain premixed fine powder;
[0029] (2) Add platy corundum granules, bauxite granules, chrome corundum granules, spinel granules, and magnesia granules in a formula amount to the mixer, and after mixing and grinding for 1 to 2 minutes, add the pre-mixture obtained in step (1). Mix the fine powder, continue to knead for 2-3 minutes, add water until th...
Embodiment 2
[0036] A ladle base brick, prepared from a mixture, added metal aluminum powder and ADW type high-efficiency water reducer, the mixture includes raw materials in weight percentages as shown in Table 1, the weight of metal aluminum powder and water reducer are respectively It is 0.7% and 0.8% of the weight of the mixture, and the particle size of the metal aluminum powder is 325 mesh.
[0037] The preparation method of described ladle base brick is:
[0038] (1) Premix corundum fine powder, α-alumina micropowder, silicon micropowder, metal aluminum powder, and ADW type high-efficiency water reducer for 25 to 30 minutes to obtain premixed fine powder;
[0039] (2) Add platy corundum granules, bauxite granules, chrome corundum granules, spinel granules, and magnesia granules in a formula amount to the mixer, and after mixing and grinding for 1 to 2 minutes, add the pre-mixture obtained in step (1). Mix the fine powder, continue to knead for 2-3 minutes, add water until the surfa...
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Abstract
The invention discloses a ladle base brick and a production method thereof; the ladle base brick is produced with a mixture, additional metallic aluminumpowder and a water reducer; the mixture includes, by weight, 13-22% of platy corundum particles, 10-20% of alumina particles, 10-30% of chromiumcorundum particles, 5-20% of spinel particles, 3-10% of magnesia particles; 10-20% of corundumfine powder, 5-10% of alpha-alumina micro powder, and 2-6% of silica powder. The ladle base brick disclosed herein is suitable for lade bases; by using the ladle base brick after the connection of upper andlower gates and a slide plate, the service life of the base of a ladle can be effectively extended; since the ladle base brick contains the chromium corundum waste, the waste is made full use, and the technical index requirements can be met; the ladle base brick has significant social benefit and economic benefit; the production cost per ton of the ladle base bricks may be 250-300 RMB less than the original cost.
Description
technical field [0001] The invention belongs to the field of unshaped refractory products, and in particular relates to a ladle base brick and a preparation method thereof. Background technique [0002] At present, the ladle base brick is mainly made of corundum spinel or corundum. Since the corundum spinel base brick contains more plate-shaped corundum or white corundum, spinel and other stable materials, the corundum spinel base brick The performance is very stable, but as the price of corundum raw materials continues to rise, its production cost is also increasing. How to save the manufacturing cost while ensuring the stable performance of the ladle base brick is a common problem faced by the steel production industry at present. Contents of the invention [0003] In order to solve the above problems, the present invention provides a ladle bottom brick and its preparation method, in which chrome corundum particles are added to the raw material, and the chrome corundum ...
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