Zibo Dingqi Chemicals Co., Ltd. is one of the most experienced manufacturers and suppliers of low molecular weight polyacrylamide in China. Welcome to wholesale high quality low molecular weight polyacrylamide made in China here from our factory. For price consultation, contact us.
The application and principles of low molecular weight polyacrylamide (PAM) in coal washing plants, as well as the concentration requirements:
Applications
Coal Slurry Water Treatment
- Flocculation: PAM bridges coal slurry particles to form large flocs, accelerating sedimentation.
- Solid-Liquid Separation: Promotes the separation of coal slurry particles from water, facilitating subsequent processing.
Improving Filtration Efficiency
- Enhanced Filtration: PAM compacts coal slurry particles, reducing moisture in the filter cake and improving filtration efficiency.
Reducing Equipment Wear
- Minimized Wear: Accelerates coal slurry sedimentation, reducing equipment wear and extending service life.
Principles
Adsorption
- PAM molecules adsorb onto the surface of coal slurry particles through polar groups.
Bridging
- Long-chain molecules form bridges between particles, promoting aggregation.
Charge Neutralization
- For negatively charged coal slurry particles, cationic PAM neutralizes the charges, enhancing flocculation.
Concentration Requirements
Concentration Control
- Typically, a PAM solution with a concentration of 0.1% to 0.5% is used. The specific concentration should be adjusted based on the properties of the coal slurry water.
Dosage
- The dosage is generally 0.5 to 5 grams per ton of coal slurry water. Excessive dosage may lead to adverse effects.
Dissolution Time
- PAM must be fully dissolved, usually requiring 30 to 60 minutes of stirring.
Precautions
Selection of PAM Type
- Choose the appropriate type of PAM (anionic, cationic, or non-ionic) based on the characteristics of the coal slurry water.
Dissolution Equipment
- Use specialized equipment to ensure complete dissolution of PAM and avoid clumping.
Operating Conditions
- Control temperature (10-40°C) and pH (6-9) to ensure optimal performance.
Summary
Low molecular weight PAM is primarily used in coal washing plants for coal slurry water treatment. It achieves flocculation and sedimentation through adsorption, bridging, and charge neutralization. During use, concentration, dosage, and dissolution time must be carefully controlled and adjusted according to actual conditions.
Hot Tags: low molecular weight polyacrylamide, China low molecular weight polyacrylamide manufacturers, suppliers, factory, chemical event marketing, waste management, chemical distribution channels, chemical seminars, soil conditioner, chemical energy
