Fire brick resistant to damage by alkali metal salt and manufacture method of fire brick

Abstract

The invention discloses a fire brick resistant to damage by alkali metal salt and a manufacture method of the fire brick. The fire brick is made from the following raw materials, by weight part, 12-21 of chabazite, 17-28 of cristobalite, 10-15 of nanometer zirconia, 14-23 of gold ore tailings, 12-20 of anorthite, 16-24 of aluminium hydroxide, 19-31 of blast furnace gas sludge, 15-25 of kaolin, 24-38 of pond sludge, 15-25 of magnesium-iron sand, 20-30 of yellow soil and 13-22 of gangue. Raw materials including magnesium-iron sand, nanometer zirconia, and blast furnace gas sludge are added to enhance the mechanical strength of the fire brick and improve damage resistance to alkali metal salt, thermal shock resistance and thermal expansion of the fire brick. The manufactured fire brick can greatly resist organization catalytic damage due to alkali metal salt, and is high in high temperature strength, good in thermal shock resistance and low in thermal expansion coefficient.

Description

technical field [0001] The invention relates to an alkali-resistant metal salt damage refractory brick 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 property is "refractory" like its name. It is a refractory material fired from refractory clay or other refractory raw materials, which can withstand various physical and chemical changes and mechanical actions 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 housing construction, kiln construction, thermal equipment, etc. [0003] The invention patent with the patent number: 201510494613.X discloses a foamed thermal insulation refractory brick produced by using coal gangue and its preparation method. The raw material composition is 40-60 parts by weight of coal gangue, bauxite tailings 30-50 parts, 2...

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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 damage resistance of refractory bricks to alkali metal salts, and a refractory brick with better damage resistance to alkali metal salts is needed in the market

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