Optimized long-life low-material-consumption refining ladle

Abstract

The invention discloses an optimized long-life low-material-consumption refining ladle. The ladle comprises a ladle shell, wherein a permanent layer is built on the inner wall of the ladle shell; a cyclic work layer is poured on the inner wall of the permanent layer; a consumptive work layer is built on the inner wall of the cyclic work layer; the castable of the cyclic work layer comprises the following components in parts by weight: 55-70 parts of sintered microporous corundum aggregate, 5-10 parts of magnesium aluminum spinel aggregate, 10-25 parts of fine powder, 2-8 parts of micro powder, 3-8 parts of bonding agent, 0.1-0.5 parts of antidetonant, 0.05-2 parts of water reducing agent and 0.01-0.1 parts of foaming agent. The cast cyclic work layer improves the safety coefficient for use of the refining ladle, has good integrity and effectively blocks the penetration of molten steel from brick joints of the permanent layer, and the cast cyclic work layer has low thermal conductivity and good thermal insulation property and can greatly reduce the consumption of the refractory material per ton of steel.

Description

Technical field [0001] The present invention relates to a further improvement of the smelting ladle described in the Chinese invention patent application publication number CN103464735A, and specifically refers to an optimized smelting ladle with high life and low consumables. Background technique [0002] The refractory structure used for the traditional smelting ladle lining is mainly divided into two layers, namely the permanent layer and the working layer. The permanent layer is usually not in direct contact with the molten steel, and the thickness is about 80-150mm. Its main function is to heat insulation and prevent the temperature of the ladle from dropping. Quickly affect the quality of pouring steel. Most permanent layers are made of high-alumina bauxite bricks or casted with bauxite castables. These refractory materials have relatively low refractoriness, low strength in high-temperature use, and poor resistance to molten steel erosion and slag erosion. The working lay...

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Problems solved by technology

[0005] However, the above-mentioned technical solution not only requires that the poured circulating working layer must have excellent high strength and high temperature resistance, but also must have excellent resistance to molten steel erosion and steel slag erosion, as well as low thermal conductivity and good Thermal shock stability, etc., but currently this technical field has not developed a casting material specially used for the above-mentioned circulating working layer, and there is no related report similar to the above-mentioned circulating working layer castable

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