In pulp mills, process waters are essential for washing and bleaching operations, ensuring efficient fiber separation and high-quality pulp production. However, these waters often lead to inorganic deposits made of minerals like calcium, magnesium, silica, and barium. These minerals precipitate and form stubborn deposits in key equipment like DD-washers and bleaching systems. Scaling disrupts flow, reduces washing efficiency, and impacts chemical reactions, ultimately affecting pulp quality and production rates.
The effects of scaling are costly and widespread. Deposits reduce washing performance, hinder chemical recovery, and force mills to face more shutdowns and operate at a lower rate. In bleaching circuits, scaling may cause inconsistent pulp brightness and quality, while clogging equipment leads to unplanned downtime, higher maintenance costs, and lower throughput. Solving these issues is critical for smooth, cost-effective operations and sustainable production.
Properties and Benefits
Our inorganic deposit control solutions are designed to combat scaling in process waters with technologies that address specific challenges in washing and bleaching:
- Crystal modification technology: Disrupts the formation of hard, adherent mineral deposits by altering crystal structure, preventing scaling on equipment surfaces.
- Threshold inhibition: Stops the growth of mineral deposits at low chemical concentrations, effectively controlling scaling before it begins.
- Dispersing agents: Keep inorganic particles suspended in process waters, avoiding the buildup of deposits on critical equipment.
- Stabilization: Prevents scaling caused by interactions between dissolved ions in process waters, maintaining optimal washing and bleaching conditions.
These solutions prevent scale formation in DD-washers and bleaching circuits, ensuring uninterrupted production and consistent fiber washing. This leads to cleaner pulp with less inorganic carryover, improving refining and drying processes. They also reduce chemical and water use, lower equipment wear, extend lifespan, and cut costs.
Usage and Applications
Our inorganic deposit control strategies are applied at key stages within pulp washing and bleaching operations to ensure reliable performance:
- DD-washers: Preventing scaling to maintain high washing efficiency and fiber separation, ensuring clean pulp.
- Bleaching circuits: Minimizing deposits that interfere with chemical reactions, enabling high-quality pulp production.
- Filtration systems: Reducing scaling in filters and screens to avoid process interruptions and maintain smooth operation.
- Process water loops: Stabilizing water chemistry to prevent scaling and fouling throughout the washing and bleaching systems.
Our Services
Banmark provides tailored chemical solutions with expert technical support and industry expertise. For pulp mills, it tackles scaling challenges in washing and bleaching systems to ensure optimal performance. The approach includes:
- Analyzing water chemistry and process conditions to create strategies for deposit control.
- Proper dosing, monitoring, and optimization to prevent scaling.
- Ongoing technical support to boost system reliability and efficiency.
Efficient washing and bleaching are key to meeting production goals and sustainability targets. With right solutions, mills reduce chemical usage, maintain pulp quality, and extend equipment lifespan while achieving consistent, cost-effective production.
