Magnesium-aluminum refractory material and preparation method therefor

Abstract

The present invention relates to a magnesium-aluminum refractory material. The magnesium-aluminum refractory material is prepared by using magnesium aluminate spinel of different particle sizes as a raw material, and adding an auxiliary additive, nanometer magnesia, boron carbide, a binder and nanometer aluminium oxide. According to the product provided by the present invention, the organization structure is more uniform, and therefore strength and thermal shock resistance of the product are improved; the particle size of nano-zinc oxide is small, and therefore micro pores can be filled with the nano-zinc oxide, porosity of the product is reduced, and volume density is increased; and refractoriness is high, corrosion resistance is excellent, thermal shock resistance is good, and the sintering temperature range is wide.

Description

technical field

[0001] The invention belongs to the technical field of refractory materials, and in particular relates to a magnesium-aluminum refractory material with high refractoriness, excellent corrosion resistance, good thermal shock resistance and wide sintering temperature range and a preparation method thereof. Background technique

[0002] With the increasing shortage of energy, countries are paying more and more attention to the development, production and use of high-temperature industrial energy-saving materials. High-temperature kilns need to use a large number of refractory materials with excellent performance or special properties. For example, in order to prolong the service life and improve the heat exchange capacity, the glass kiln regenerator needs to have excellent corrosion resistance, creep resistance and lattice body with special shape and size. In addition, the upper structure of the oxy-fuel glass melting furnace also needs to use concave refractory...