Detailed Photos
Product Description
Poly Aluminum Chloride: A Comprehensive Introduction
Poly Aluminum Chloride (PAC), also known as Polyaluminium Chloride, is an inorganic polymer widely used in various industries, especially in water treatment. This article will explore its definition, physicochemical properties, production methods, storage, market information, downstream industry chain, and application areas.
1. Definition
PAC is a water - soluble inorganic polymer that lies between AlCl3 and Al(OH)3. Its chemical formula is generally expressed as (Al2(OH)nCl6 - n)m, where m represents the degree of polymerization, and n indicates the neutrality of the PAC product. With n ranging from 1 to 5, it forms a high - charge polymeric cyclic chain structure with Keggin structure. This structure endows PAC with strong abilities in electro - neutralization and bridging for colloids and particulate matter in water, enabling it to effectively remove toxic substances and heavy metal ions.
2. Physicochemical Properties
Appearance
- Solid PAC usually appears as yellow, light yellow, dark brown, or dark gray powder or granules. The color is mainly related to its raw materials and preparation process, especially the content of iron ion impurities. Higher purity often results in lighter color.
- Liquid PAC is typically light yellow to colorless transparent liquid, with a concentration generally ranging from 10% to 20%. The color and concentration are determined by the degree of polymerization of aluminum chloride and acidity.
Solubility
It is easily soluble in water and dilute alcohol but insoluble in absolute alcohol and glycerol.
Chemical Reactivity
When heated above 110°C, it decomposes, releasing hydrogen chloride (HCl) and breaking down into aluminum oxide. It undergoes depolymerization when reacting with acids, reducing the degree of polymerization and basicity until it becomes a normal salt. When reacting with alkalis like NaOH, the degree of polymerization and basicity increase, eventually forming aluminum hydroxide or aluminate. When mixed with polyvalent salts such as aluminum sulfate, precipitation is likely to occur, often reducing or completely losing its coagulation performance.
3. Production Methods
(1). Metal Aluminum Method
- Raw Materials: Mainly use aluminum processing scraps such as aluminum chips, aluminum ash, and aluminum slag.
- Process: Hydroxyl Al powder with high purity is used. The production process generally adopts heating and pressurized acid - dissolving method. The synthesized PAC has low content of toxic substances such as heavy metals.
(2). Aluminum Ash HCl Method
- Raw Materials: Aluminum ash (mainly composed of aluminum oxide and metallic aluminum), HCl, and water.
- Process: Aluminum ash is added to a reactor pre - filled with washing water at a certain ratio. Then, HCl is slowly added under stirring for polycondensation reaction. After ripening and polymerization until the pH value reaches 4.2 - 4.5 and the relative density of the solution is about 1.2, sedimentation is carried out to obtain liquid PAC. The liquid product can be further diluted, filtered, evaporated, concentrated, and dried to obtain solid PAC.
4. Boiling Pyrolysis Method
- Raw Materials: Crystalline aluminum chloride.
- Process: Crystalline aluminum chloride is subjected to boiling pyrolysis at 170°C. The released hydrogen chloride is absorbed by water to prepare 20% HCl for recycling. Then, water is added for ripening and polymerization above 60°C. After that, it goes through solidification, drying, and crushing to produce solid PAC.
5. Storage
- PAC should be stored in a dry, moisture - proof, and heat - avoiding place.
- Since it has certain corrosiveness, the storage container should be made of corrosion - resistant materials.
- The effective storage period of liquid PAC is usually about half a year, while that of solid PAC is about two years.
6. Market Information
The global market for PAC has been growing steadily in recent years, driven by the increasing demand for water treatment in both developed and developing countries. Asia - Pacific is the largest consumer region, mainly due to rapid industrialization and urbanization in countries like China and India, which have led to a large amount of industrial wastewater and domestic sewage that need treatment. The market is highly competitive, with numerous manufacturers. Key factors affecting market competition include product quality (such as aluminum content, basicity, and impurity content), price, and supply capacity.
7. Downstream Industry Chain
- Water Treatment Plants: Both for municipal and industrial water treatment. Municipal water treatment plants use PAC to purify raw water to meet the standards for domestic water supply. In industrial water treatment, it is used in various industries such as petrochemical, textile, and papermaking to treat wastewater before discharge.
- Industrial Manufacturers: In industries like papermaking, PAC is used as a sizing agent to improve paper quality; in the printing and dyeing industry, it is used for treating wastewater. It is also used as a cement accelerator, a hardening agent in precision casting, and an adhesive in refractory materials.
Product Parameters
| ITEM |
SPECIFICATION |
TEST RESULT |
| Al2O3 (mass fraction, %) |
≥30 |
30.5 |
| Basicity, % |
40 - 90 |
72.9 |
| Water insoluble, % |
≤0.6 |
0.14 |
| PH value (10g/L solution) |
3.5 - 5.0 |
3.7 |
| As (mass fraction, %) |
≤0.0002 |
Complies |
| Cd (mass fraction, %) |
≤0.0002 |
Complies |
| Cr (mass fraction, %) |
≤0.0005 |
Complies |
| Pb (mass fraction, %) |
≤0.001 |
Complies |
| Fe (mass fraction, %) |
≤2 |
Complies |
| Hg (mass fraction, %) |
≤0.00001 |
Complies |
| Se (mass fraction, %) |
≤0.001 |
Complies |
| Density (20°C) g/cm³ |
≥1.12 |
1.13 |
Packaging & Shipping
25kg/50kg bag---23~25tons/1FCL without pallet
1000kg bag---20tons/1FCL without pallet
Application
1. Water Treatment
- Drinking Water Treatment: PAC is used to remove suspended solids, colloids, and some organic matter in raw water. It can effectively reduce the turbidity of water and improve the clarity of water, ensuring the safety of drinking water.
- Industrial Wastewater Treatment: It can treat a variety of industrial wastewater, such as the removal of chroma and heavy metal ions in printing and dyeing wastewater, the treatment of oily wastewater in the oil - refining industry, and the treatment of wastewater containing fluori-ne in the leather industry.
- Municipal Sewage Treatment: PAC is used in the primary and secondary treatment of municipal sewage to enhance the sedimentation effect of suspended solids and organic matter, improving the quality of effluent water.
Other Industrial Applications
- Paper Industry: As a sizing agent, it can improve the strength and smoothness of paper. It can also be used to control the charge of paper pulp, improving the retention rate of fillers and fibers.
- Precision Casting: Used as a hardening agent to help the formation of casting molds.
In conclusion, Poly Aluminum Chloride is an important chemical product with a wide range of applications. Its unique properties make it an irreplaceable material in water treatment and many industrial production processes.
Certifications
Company Profile
Shandong Jiuchong Chemical Company Limited was founded in 2016, which is located in Weifang City, Shandong Province, China. We have 228 square meters of office space. Now Jiuchong chemical is a large modern international chemical enterprise with more than 28 series. Since our establishment, the company has gradually established and improved a sound supply chain system, quality monitoring system and service system, ensuring products quality and service.
At the same time, relying on our own geographical location and resource advantages, our company is committed to the optimization of a variety of chemical supply chain, including magnesium chloride, sodium metabisulfite, sodium bicarbonate, calcium chloride, magnesium sulfate, polyaluminium chloride, aluminium sulfate, industrial salt, soda ash etc.
Our products are sold well in 288 domestic cities and more than 36 foreign countries. Now the company has won the praise and trust of domestic and foreign customers. Based on stable quality and output, good team service and staff efforts, we will continue to develop domestic and foreign markets.
Jiuchong chemical takes "integrity, innovation and development" as the concept, puts integrity in the priority position in serving customers, and guarantees high quality products and satisfactory cooperation for customers experience. Your satisfaction is our driving force. Quality is the soul of enterprise and that is what we have always done. In the future, Shandong Jiuchong Chemical Company Limited hopes to build a brilliant tomorrow with you!
FAQ
Q1: Is this product safe to handle?
A: Yes, it is generally considered safe and non-toxic under normal handling conditions. However, we recommend wearing gloves and a mask to avoid prolonged skin or inhalation exposure, especially in large-scale use.
Q2: What is the shelf life of this product?
A: The shelf life is 2 years when stored in a cool, dry, and well-ventilated area. It should be kept away from moisture to prevent caking or decomposition.
Q3: What packaging options are available?
A: Standard packaging includes 25kg or 50kg plastic woven bags with inner liners. We also offer jumbo bags and customized bag marks according to your requirements.
Q4: Can you provide documents such as COA, MSDS, or TDS?
A: Absolutely. We can provide Certificate of Analysis (COA), Material Safety Data Sheet (MSDS), Technical Data Sheet (TDS), and other documents as needed for customs or technical review.
Audited Supplier 
){kind=link}