What colors does polyaluminium chloride have? The polyaluminium chloride sold on the market is quite diverse. Because each manufacturer has different production processes and raw materials, the colours of the polyaluminium chloride produced are also somewhat different. Generally, there are three colours of polyaluminium chloride: white, yellow and tan. The following explains the difference in the uses of the three different colours. Polyaluminium chloride with an aluminium dioxide content of 27-30 within the national standard is mostly solid powder from earthy yellow to yellowish yellow. These types of polyaluminium chloride are relatively water soluble. During the dissolution process, they are accompanied by physical and chemical changes such as electrochemistry, coagulation, adsorption and precipitation, and eventually generate [Al2(OH)3(OH)3]∝↓, thereby achieving the purpose of purification. Therefore, when using polyaluminium chloride, no other additives are needed. The flocs are formed quickly and coarsely, with high activity and fast precipitation, and the purification effect on high turbidity water is obvious.
White polyaluminium chloride is called high-purity iron-free white polyaluminium chloride, or food-grade white polyaluminium chloride. Compared with other polyaluminium chlorides, it is a higher-quality product. The main raw materials are high-quality aluminium hydroxide powder and hydrochloric acid, and the production process used is the most advanced technology spray drying method in China. White polyaluminium chloride is used in many fields such as papermaking sizing agent, sugar decolorization and clarification agent, tanning, medicine, cosmetics, precision casting and water treatment.
The raw materials of yellow polyaluminium chloride are calcium aluminate powder, hydrochloric acid, and bauxite. It is mainly used in sewage treatment and drinking water treatment. If the raw materials used for drinking water treatment are aluminium hydroxide powder, hydrochloric acid and a little calcium aluminate powder, the process adopted is plate and frame filter pressing process or spray drying process. Since there are strict requirements for heavy metals in the treatment of drinking water, both the raw materials and the production process are better than brown polyaluminium chloride. Yellow polyaluminium chloride is generally produced by drum drying or spray tower drying, and there are two solid forms of flakes and powders.
The raw materials of brown polyaluminium chloride are calcium aluminate powder, hydrochloric acid, bauxite and iron powder. The production process adopts the drum drying method, which is generally used for sewage treatment. Because iron powder is added, the color is brown. The more iron powder is added, the darker the color. If the iron powder exceeds a certain amount, it is sometimes called polyaluminum ferric chloride, which has a good effect in sewage treatment.
The main products of flocculant manufacturer Xinhuan Water Treatment are:
White polyaluminium chloride (food grade), drinking grade polyaluminium chloride, industrial grade polyaluminium chloride, anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide, petroleum recycling polyacrylamide, oil recovery polyacrylamide, polyacrylamide, polymer flocculant polymer flocculation coagulant, polymeric ferrous sulphate, polyferric aluminium chloride and other water treatment chemicals. Welcome customers to write to us to negotiate business! Tel/WhatsApp：+8619003830067 Email：joanna@xhwtm.com Contact:Joanna
