Basic uses of aluminum sulfate: 1. Used as a paper sizing agent in the paper industry to enhance the water resistance and permeability of paper;
2. After dissolving in water, the fine particles and natural colloidal particles in the water can be aggregated into large flocs, which can be removed from the water, so it is used as a coagulant for water supply and wastewater;
3. Used as turbid water purification agent, also used as precipitating agent, fixing agent, filler and so on. Used as an antiperspirant cosmetic material (astringent) in cosmetics;
4. In the fire protection industry, foam fire extinguishing agent is formed with baking soda and foaming agent;
5. Analytical reagent, mordant, tanning agent, oil decoloring agent, wood preservative;
6. Stabilizers for pasteurization of albumin (including liquid or frozen whole eggs, egg whites or egg yolks);
7. Can be used as raw materials for the manufacture of artificial gemstones and higher ammonium alum, other aluminates;
8. In the fuel industry, it is used as a precipitant in the production of chrome yellow and lake dyes, and at the same time it acts as a fixing and filler;
9, curing agent (oil and fat removal, etc.), pasteurization stabilizer for albumin (including liquid or frozen whole eggs, egg whites or egg yolks). The maximum allowable dosage (FAO / WHO, 1984) is 0.036%. Used in papermaking, water purification, and as a mordant, tanning agent, pharmaceutical astringent, wood preservative, foam fire extinguishing agent, etc. For the production of artificial gems and high-grade ammonium alum