Hey there! If you’re reading this, chances are you’re curious about what goes into making polyaluminium chloride (PAC). Well, you’ve come to the right place. I’m a supplier of PAC, and I’m here to walk you through the whole production process, step by step. Polyaluminium Chloride

First off, let’s talk about what PAC actually is. It’s a water treatment chemical that’s super effective in clarifying water by removing impurities. It’s used in a ton of different industries, from water treatment plants to paper mills, and even in the food and beverage industry. So, it’s a pretty big deal.
The production process of PAC starts with the raw materials. The main ingredients are usually bauxite ore, hydrochloric acid, and calcium aluminate powder. Bauxite is a sedimentary rock that’s rich in aluminum, and it’s the primary source of aluminum for PAC production. Hydrochloric acid is used to dissolve the aluminum from the bauxite, and calcium aluminate powder is added to adjust the basicity of the final product.
The first step in the production process is the digestion of bauxite ore. This involves mixing the bauxite with hydrochloric acid in a reactor vessel. The mixture is then heated and stirred for a few hours to allow the acid to dissolve the aluminum from the bauxite. The reaction is exothermic, which means it releases heat, so the temperature in the reactor needs to be carefully controlled to prevent overheating.
Once the digestion is complete, the resulting solution is filtered to remove any solid impurities. This is an important step because any undissolved solids could affect the quality of the final PAC product. After filtration, the solution is transferred to another reactor, where calcium aluminate powder is added. The calcium aluminate reacts with the hydrochloric acid in the solution to form calcium chloride and aluminum hydroxide. This process is known as neutralization, and it helps to adjust the basicity of the solution.
The next step is the polymerization process. This is where the magic happens. The neutralized solution is heated and agitated to promote the formation of polyaluminum species. During polymerization, the aluminum hydroxide molecules combine to form larger, more complex polymers. The degree of polymerization can be controlled by adjusting the reaction conditions, such as temperature, pH, and reaction time. The longer the reaction time and the higher the temperature, the more highly polymerized the PAC will be.
After polymerization, the solution is cooled and allowed to settle. This allows any remaining solids to sink to the bottom of the reactor, and the clear liquid on top is the PAC solution. The solution is then decanted or filtered to remove any remaining impurities. At this point, the PAC solution can be further processed to produce different grades of PAC, depending on the specific requirements of the customer.
One common way to produce different grades of PAC is by adjusting the basicity of the solution. Basicity is a measure of the ratio of hydroxide ions to aluminum ions in the PAC. By adding different amounts of calcium aluminate or other alkaline agents, the basicity of the solution can be adjusted to produce PAC with different basicity levels. Higher basicity PAC is generally more effective in removing impurities from water, but it can also be more expensive to produce.
Another way to produce different grades of PAC is by drying the solution to produce a solid product. This is done by spray drying or drum drying the PAC solution. Spray drying involves atomizing the solution into fine droplets and then drying them with hot air. Drum drying involves spreading the solution onto a heated drum and then scraping off the dried product. Solid PAC is more convenient to transport and store than the liquid form, but it can also be more expensive to produce.
Now, I know what you’re thinking. This all sounds pretty complicated, right? Well, it is, but that’s why we have a team of experts who are trained to handle every step of the production process. We use state-of-the-art equipment and follow strict quality control measures to ensure that our PAC is of the highest quality.
So, why should you choose our PAC? Well, for starters, we offer a wide range of grades and formulations to meet the specific needs of our customers. Whether you need a high basicity PAC for industrial water treatment or a low basicity PAC for drinking water treatment, we’ve got you covered. We also offer competitive pricing and excellent customer service. Our team is always available to answer your questions and provide you with technical support.
If you’re interested in purchasing PAC from us, don’t hesitate to get in touch. We’d be happy to discuss your requirements and provide you with a quote. You can reach out to us through our usual channels, and we’ll get back to you as soon as possible.

In conclusion, the production process of polyaluminium chloride is a complex and multi-step process that requires careful control and expertise. By using high-quality raw materials and following strict quality control measures, we’re able to produce PAC that’s effective, reliable, and safe. Whether you’re in the water treatment industry or any other industry that requires water clarification, our PAC is the solution you’ve been looking for. So, what are you waiting for? Contact us today and let’s get started on your next project!
Water Treatment Agent References
- "Polyaluminium Chloride: A Review of Its Properties and Applications in Water Treatment." Journal of Chemical Technology and Biotechnology.
- "Water Treatment Chemicals: Principles and Practice." Edited by John Crittenden, et al.
Zouping Jinxing Chemical Co., Ltd.
Zouping Jinxing Chemical Co., Ltd. is one of the most reliable polyaluminium chloride manufacturers and suppliers in China, also supports customized service with low price. Please feel free to wholesale cheap polyaluminium chloride in stock here from our factory. For free sample, contact us now.
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