Al2O3-SiC-C refractory brick for torpedo ladle produced by utilizing waste Al2O3-C and preparation method of Al2O3-SiC-C refractory brick

Abstract

The invention belongs to the field of refractory matters for ferrous metallurgy and in particular relates to an Al2O3-SiC-C refractory brick for a torpedo ladle produced by utilizing a waste Al2O3-C material and a preparation method of the Al2O3-SiC-C refractory brick. The Al2O3-SiC-C refractory brick comprises the following raw materials in percentage by weight: 10-40% of special grade bauxite clinker particles with the particle size of 3-5mm, 10-30% of special grade bauxite clinker particles with the particle size of 1-3mm, 5-20% of alundum particles with the particle size of 0.088-1mm, 5-20% of corundum fine powder with the particle size of less than 0.088mm, 2-8% of silicon carbon particulates with the particle size of 0.088-1mm, 2-8% of silicon carbon fine powder with the particle size of less than 0.088mm, 10-25% of waste Al2O3-C material fine powder with the particle size of less than 0.088mm, 5-15% of alumina micro powder with the particle size of less than 0.088mm, 3-10% of binding clay fine powder with the particle size of less than 0.088mm, 1-10% of crystalline flake graphite powder with the particle size of less than 0.088mm, 0.5-5% of asphalt powder with the particle size of less than 0.088mm, and 4-8% of additional phenolic resin.

Description

technical field [0001] The invention belongs to the field of refractory materials for iron and steel metallurgy, in particular to Al used in the working lining of torpedo tanks in the production process of molten iron pretreatment 2 o 3 -SiC-C brick field, specifically a kind of waste Al 2 o 3 - Al used in the production of torpedo tanks with C materials 2 o 3 -SiC-C refractory brick and its preparation method. Background technique [0002] Hot metal pretreatment is an important link in the iron and steel metallurgy process. It plays a vital role in improving product quality, optimizing production processes and reducing production costs. Therefore, matching the performance and service life of refractory materials for hot metal pretreatment is crucial important. During work, the inner lining of the torpedo tank is not only subjected to thermal shock and melting loss of molten iron, and repeated immersion in high-temperature molten iron, but also undergoes severe erosion...

AI Technical Summary

Problems solved by technology

In order to ensure the excellent performance of the products, the three major continuous casting parts are all made of high-grade raw materials, and the particle size limit of the raw materials is small. After molding, the products must be inspected by X-detection to eliminate internal defects of the products. Unqualified products must be discarded and piled up on the production site. A large number of substandard products, serious waste of resources

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