Alumina hollow sphere

Alumina hollow spheres are hollow spherical lightweight heat-insulating refractory materials that are blown out after melting alumina at high temperature in an electric arc furnace. It is characterized by light weight, closed cells and high temperature resistance. It is an ideal heat insulation filling material for high temperature kilns, a high-quality aggregate for high temperature lightweight refractory castables, and an excellent high temperature resistance, heat insulation and energy-saving refractory material. It can be used as high-temperature and ultra-high temperature insulation filler, high-temperature refractory concrete lightweight aggregate, high-temperature castable, and can also be used in high-temperature energy-saving downdraft kiln, shuttle kiln, molybdenum wire furnace, tungsten rod furnace, induction furnace, nitriding furnace, etc. . Reducing the weight of the furnace body, reforming the structure, saving materials, and saving energy will all achieve significant results.

Alumina hollow spheres are a new type of high-temperature heat-insulating material, and the crystal form is a-Al2O3 microcrystals. With aluminum oxide hollow spheres as the main body, it can be made into products of various shapes. The service temperature is as high as 1800 degrees Celsius. The mechanical strength of the product is high, which is several times that of ordinary light products, and the volume density is only half of that of corundum products.

Features:

Characteristics and properties of alumina hollow spheres

Alumina hollow spheres are light, closed cells, high temperature resistant, and have good thermal insulation properties. With alumina hollow spheres as the main body, they can be made into products of various shapes. The service temperature is 1800°C, and the products have high mechanical strength, which is the number of general light products. times, while the bulk density is only half of that of corundum products.

Product Categories

There are two types of alumina hollow balls: mixed-grade balls and graded balls. The particle size of the mixed-grade balls is 0.2-5mm, and the particle size of the graded balls is 0.1-0.2mm, 0.2-0.5mm, 0.5-1mm, 1-2mm, 2-3mm. , 3-5mm.