The preparation of industrial-grade aluminium hydroxide method Appropriate chemical industry

aluminum hydroxide as itself structure and special properties, especially the ultrafine aluminum hydroxide powder preparation, it is difficult to rarely reported this knowledge both at home and abroad, so what's the method to produce aluminum hydroxide of aluminum hydroxide manufacturer?

a microemulsion method, some aluminum hydroxide manufacturer scattered by W/O microemulsion preparation of aluminum hydroxide, can have very good dispersion effect. The microemulsion system has a broad and stable microemulsion phase, preparation of ultrafine grain is a kind of ideal system. In the system, through the ammonia precipitation of aluminum hydroxide ultrafine grain, average particle size of 6 nm, good dispersion.

- two solutions

aluminum hydroxide gel method manufacturers more is the sol-gel method, research and application of sol-gel method in aluminium sulfate as raw materials, in the PH of 3. 5, sol concentration of 0. 4, add 0. 3% water-soluble polymer dispersant, reaction temperature of 80 under the condition of sol, get stable sol, after 5 h, the processing of ultrafine aluminum hydroxide particles was, good dispersion, uniform particle size distribution. Three homogeneous precipitation

this method is of high purity aluminum sulfate precipitation as the precursor, ammonia in controlling reaction conditions after the preparation of aluminum hydroxide particles, but because of this method, the sample size, not easy to control reaction conditions, so a lot of aluminum hydroxide manufacturers did not use this method. Four organic aluminum hydrolyzing method

under the action of catalyst, isopropyl aluminum in ammonia to hydrolysis, aluminum hydroxide after filtration, drying can be generated ultrafine particles, this method is simple, but also increase the cost of aluminum hydroxide manufacturer. Five aluminum acid salt solution

manufacturer of aluminum hydroxide in the supersaturated sodium aluminate solution with sodium bicarbonate, acids, or carbon dioxide to get aluminum hydroxide hydrolysis. At present, aluminum hydroxide as a flame retardant agent mainly using this method.

manufacturer of aluminum hydroxide aluminum hydroxide of different USES according to the different production methods, further research is in its various performance, believe that will soon be achievement.