There are two kinds of raw materials for activated alumina production, one is “fast powder” produced by trialumina or Bayer stone, and the other is produced by aluminate or aluminum salt or both at the same time.
X,ρ-alumina and the production of X,ρ-alumina
X, ρ-alumina is the main raw material for the production of activated alumina balls, or FCA for short. In China, it is called “fast release powder” because of the alumina powder produced by rapid dehydration method.”Fast depowder” is a mixture of X-alumina and p-alumina with different contents due to different production conditions.
X,ρ-alumina was discovered in 1950 and was certified by ASTM in 1960. In the 1970s, x and Europe. The key to the X, ρ -alumina technology is rapid dehydration, usually in a fluidized bed reactor, where the bed temperature is controlled by a combustion gas or liquid. In 1975-1980, Tianjin Institute of Chemical Industry successfully developed the suspension heating fast stripping production technology with the characteristics of Chinese technology. It used cone reactor, added the dry and crushed aluminum hydroxide, and made the mixture of X-alumina and ρ-alumina by flash roasting 0.1~10s in the rapid dehydration furnace.
Post time: Apr-01-2023
