Is high-purity aluminum oxide aluminum oxide?

Because high-purity alumina and alumina are used in many industries, and there are certain similarities in their physical and chemical properties. Over time, many people have questioned whether high-purity alumina is alumina? We consulted relevant professionals and received professional answers. Please refer to the following for specific details.

 High purity alumina is not alumina. Generally speaking, alumina is a relatively impure type of alumina, which is prepared industrially from bauxite and diaspore. High purity alumina is generally prepared by chemical methods.

1、 Alumina

Character: A white solid that is insoluble in water, odorless, tasteless, hard, easily hygroscopic and non deliquescent. It is an amphoteric oxide that is soluble in inorganic acids and alkaline solutions, almost insoluble in water and non-polar organic solvents; Relative density (d204) 4.0; Melting point 2050 ℃.

Storage: Sealed and dry storage.

Usage: Used as analytical reagents, dehydration of organic solvents, adsorbents, organic reaction catalysts, abrasives, polishing agents, raw materials for aluminum smelting, and refractory materials.

2、 High purity alumina

Character: White micro powder, with uniform particle size, easy to disperse, stable chemical properties, moderate high-temperature shrinkage performance, and good sintering performance; High conversion rate and low sodium content.

Performance: The basic raw materials for producing heat-resistant, wear-resistant, and corrosion-resistant products, such as high aluminum refractory materials, high-strength ceramic products, automotive spark plugs, grinding materials, etc., have reliable quality, high melting point, good thermal stability, high hardness, good wear resistance, high mechanical strength, good electrical insulation, and corrosion resistance. They are widely used in shaped and unshaped refractory materials, refractory castable binders, wear-resistant grinding tools, high-purity refractory fibers, special ceramics Mirror polishing of decorative materials such as electronic ceramics, structural ceramics, stainless steel, granite, etc.

Purpose: It can meet the requirements of users with different purposes and process conditions. High temperature alumina is produced by using industrial alumina, aluminum hydroxide, and additive technology for low-temperature phase inversion calcination, followed by advanced grinding technology and process to produce activated alumina micropowder, which is characterized by high activity and fine particle size. Especially suitable for shaped products and refractory castables, plastic, repair materials, gunning materials, coating materials and other amorphous refractory materials, it has a strong effect on improving the high-temperature strength of refractory materials and improving their corrosion resistance.

The above has already introduced both in detail. We believe that our doubts about whether high-purity alumina is alumina have been resolved, and the former is superior to the latter in terms of fire resistance and corrosion resistance. Moreover, the former has a wider range of uses, so we usually choose the former when making purchases.