Polyaluminum chloride for paper mills

The application of polyaluminium chloride has penetrated into various industrial water treatments. Different industries and different uses can choose polyaluminium chloride with different production processes. Does the paper industry need polyaluminium chloride to help improve it?

Polyaluminium chloride for paper mills. Polyaluminum chloride can not only be used as a water purifying agent, it can also be used as a retention aid in the paper industry. Some paper-making straw pulp fibers are short and have high content of miscellaneous cells, which directly causes poor paper strength. It is difficult to filter water in the process. There are two ways to solve this problem. One is mechanical retention. The mechanical retention is mainly the mechanical retention of particles in the gradually formed paper structure. This mechanism is similar to filtering. It is only applicable to the longer fiber part of the paper material, and cannot explain the reason for the high retention rate of fine components, nor can it explain the retention effect of the retention aid; the other is colloidal flocculation, which includes coagulation and Flocculation. Coagulation refers to the use of inorganic salts or polymers with low molecular weight and high charge density to destabilize the colloidal suspension and cause flocculation. The resulting flocculation is a small and tightly aggregated sediment, which is mainly through Charge neutralization, heterogeneous condensation, and patching are achieved in several forms. The inorganic salt and polymer with higher charge density mentioned in coagulation are polyaluminium chloride.