Aluminium Chlorohydrate ( ACH ) is a highly effective coagulant that is widely used. Especially in the paper industry, ACH plays a vital role in improving paper quality, optimizing production processes and enhancing environmental sustainability.
In the papermaking process, Aluminium Chlorohydrate is mainly used as a retention and drainage agent, pitch control agent and pH stabilizer. It helps improve the efficiency of paper mills, resulting in better fiber retention, reduced chemical usage and less waste.
Functions of Aluminium Chlorohydrate in Papermaking
When used as a retention and drainage agent, ACH can effectively enhance the retention of fillers, fine fibers and additives and reduce material losses. ACH can be used as a microparticle retention system to improve the retention rate of these particles and prevent them from being lost during drainage. This makes the paper structure more uniform and reduces the impact on the environment by minimizing waste.
Aluminium Chlorohydrate can significantly improve the strength properties of paper, including tensile strength, bursting strength and tear strength. By forming strong bonds between cellulose fibers, ACH enhances the tear and break resistance of paper, making it suitable for demanding applications.
And ACH can control resin and stickies, preventing resin deposits and contaminants from accumulating in papermaking.
ACH has an ideal effect in maintaining pH balance, which can better process pulp.
Aluminium Chlorohydrate can also improve paper quality by increasing paper’s resistance to water and ink penetration.
Comparison: Aluminium Chlorohydrate vs. Other Coagulants
Feature |
Aluminium Chlorohydrate (ACH) |
Aluminium Sulfate (Alum) |
Poly Aluminium Chloride (PAC) |
Dosage Required |
Lower |
Higher |
Medium |
Sludge Formation |
Minimal |
High |
Medium |
Retention Efficiency |
High |
Medium |
High |
pH Stability |
More stable |
Requires pH adjustment |
More stable |
Cost Efficiency |
More effective at low doses |
Requires more chemicals |
Medium |
ACH offers significant advantages over traditional coagulants, making it a top choice for modern paper mills seeking greater efficiency and sustainability.
Benefits of Using Aluminium Chlorohydrate in Papermaking
Improved Paper Quality: ACH helps enhance paper properties, including water resistance, strength, and printability.
Improved Production Efficiency: ACH improves retention and drainage, resulting in higher machine speeds and less downtime.
Reduced Environmental Impact: ACH minimizes the loss of fine particles and chemicals, reducing waste and pollution.
Cost Effectiveness: Aluminium Chlorohydrate is a cost-effective solution that improves paper quality and production efficiency.
Application Considerations for ACH
To maximize the benefits of ACH, papermakers should consider the following:
-Dosage: The optimal dosage of ACH should be determined through trials to achieve the desired effect without overdosing.
-Compatibility: Ensure compatibility with other chemicals used in the papermaking process to avoid adverse reactions.
-pH: ACH is effective over a wide pH range, but it is important to monitor and adjust pH as needed for optimal performance.
Aluminium Chlorohydrate is a low-residue coagulant that produces less sludge and lower chemical waste residues in the wastewater. This results in easier treatment of wastewater from papermaking, which helps achieve more sustainable production practices and makes the production process more environmentally friendly.
Post time: Feb-27-2025