Molten slag corrosion-resistant refractory brick and preparation method thereof

Abstract

The invention discloses a molten slag corrosion-resistant refractory brick and a preparation method thereof. The refractory brick is prepared from the following raw materials in parts by weight: 13-24 parts of siliceous shale, 18-27 parts of base slag, 15-25 parts of kyanite, 11-19 parts of hydrargillite, 5-9 parts of cerium oxide, 15-20 parts of steel mill precipitator dust, 10-15 parts of vesuvianite, 20-30 parts of purple grit mud, 24-32 parts of bentonite, 14-22 parts of talcum, 15-25 parts of baddeleyite, 12-24 parts of superfine molybdenum powder, 8-13 parts of condensed aluminum phosphate and 4-8 parts of yttrium oxalate. The refractory brick prepared by the invention is compact in crystal structure, high in refractoriness under load, favorable in thermal shock resistance, high in normal-temperature and high-temperature mechanical strength, favorable in wear resistance and favorable in thermal conductivity; and the refractory brick has excellent molten slag corrosion resistance, is particularly suitable for resisting the corrosion and invasion of a solution and molten slag from a high-temperature smelting furnace, is wide in application range and has a favorable use effect.

Description

Technical field [0001] The invention relates to a refractory brick resistant to slag erosion and a preparation method thereof, belonging to the field of refractory materials. Background technique [0002] Refractory brick is a kind of building material brick, and its properties are the same as its name, "refractory". It is a refractory made of refractory clay or other refractory materials, which can withstand various physical and chemical changes and mechanical effects at high temperatures. Refractory bricks are not common in our lives, but they appear in some buildings that are closely related to our lives, such as house construction, kiln construction, and thermal equipment. [0003] The patent number is: 201510494613.X. The invention patent discloses a foamed thermal insulation refractory brick produced from coal gangue and its preparation method. Its raw material composition is 40-60 parts of coal gangue and bauxite tailings in parts by weight. 30-50 parts, 2-15 parts of fly ...

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Problems solved by technology

The invention provides a foamed thermal insulation refractory brick produced using coal gangue as the main raw material and its preparation method, although it solves the problems of low refractoriness, poor molding, low strength and high cost of lightweight refractory thermal insulation bricks in the domestic market , but with the rapid development of science and technology and the continuous improvement of the economic level, higher requirements are put forward for the slag erosion resistance of refractory bricks, and a refractory brick with better slag erosion resistance is needed in the market