How to produce Polyaluminum Chloride

Polyaluminum chloride (PAC) is a commonly used flocculant in the papermaking industry. It is a key component in the treatment of water, which is generated during the papermaking process. In this article, we will discuss how to generate PAC.

Material Selection: The first step in generating PAC is to select the right raw materials. The main raw materials used for PAC production are aluminum sulfate and hydrochloric acid. The selection of raw materials depends on the specific requirements of the product.

Acidification: The next step is to acidification. The raw materials are mixed with hydrochloric acid to form an acidic solution. The pH of the solution should be adjusted to around 3-4 to ensure the optimal performance of PAC.

Addition of AluminumSulfate: After acidification, aluminum sulfate is added to the solution. The aluminum sulfate is added slowly to prevent the formation of precipitates.

Stirring: The solution is then stirred at a high speed to ensure uniform mixing of the raw materials. This step is crucial for the successful generation of PAC.

Collection and Purification: The solution is then collected and purified. The collected solution is filtered through a filter press to remove any precipitated materials. The filtrate is then concentrated using a evaporator or vacuum distillation.

Testing: Finally, the generated PAC is tested to ensure its quality meets the required specifications.

In conclusion, the generation of PAC requires careful selection of raw materials, acidification, addition of aluminum sulfate, stirring, collection and purification, and testing. By following these steps, it is possible to generate high-quality PAC that can effectively treat water in the papermaking industry.

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