16.5% Al2(SO4)3 Aluminium Sulphate Salt White Flakes For Water Treatment

Aluminium sulfate is a salt with the formula Al2(SO4)3. It is soluble in water and is mainly used as a coagulating agent (promoting particle collision by neutralizing charge) in the purification of drinking water and wastewater treatment plants, and also in paper manufacturing. The anhydrous form occurs naturally as a rare mineral millosevichite, found for example in volcanic environments and on burning coal-mining waste dumps. Aluminium sulfate is rarely, if ever, encountered as the anhydrous salt. It forms a number of different hydrates, of which the hexadecahydrate Al2(SO4)3·16H2O and octadecahydrate Al2(SO4)3·18H2O are the most common. The heptadecahydrate, whose formula can be written as [Al(H2O)6]2(SO4)3·5H2O, occurs naturally as the mineral alunogen. Aluminium sulfate is sometimes called alum or papermaker's alum in certain industries. However, the name "alum" is more commonly and properly used for any double sulfate salt with the generic formula XAl(SO4) 2·12H2O, where X is a monovalent cation such as potassium or ammonium.

1. Aluminum sulfate is used as an effective crosslinking agent for animal glue and can improve its viscosity.

2. It is also used as a curing agent for urea formaldehyde adhesives, and the curing speed of 20% aqueous solution is faster.

3. In the paper industry, it is used as the precipitator of rosin size, wax lotion and other sizing materials, as the flocculant in water treatment, as well as as the retention agent of foam fire extinguishers, raw materials for manufacturing alum and aluminum white, as well as raw materials for oil decolorization, deodorant and some drugs.

4. It can also manufacture artificial gemstones and high-grade ammonium alum. Products with arsenic content not exceeding 5mg/kg can be used as water treatment flocculants.

5. It can be used as raw material to produce artificial gemstones, high-grade ammonium alum and other aluminate.