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Application and Precautions of Zhengda Polyacrylamide in Coal Washing Plants
Polyacrylamide (PAM), commonly used in sewage treatment within coal washing plants, is a special anionic type of polyacrylamide. As environmental protection becomes more important, many coal washing plants are now turning to eco-friendly solutions like PAM. But how exactly should it be used? What are the key things to watch out for? Zhengda provides a detailed guide to help you understand.
How to Use Polyacrylamide in a Coal Washing Plant:
First, Dissolution: Always use a non-ferrous container. Prepare water at a temperature below 60°C. While stirring, slowly sprinkle the coal washing flocculant into the container. Ensure thorough mixing by continuously stirring for 50–60 minutes. The stirring speed should match the size and type of the container.
Second, Addition: Dilute the specific flocculant for coal washing with water. The concentration should be between 0.02% and 0.2%. Then, evenly add the solution to the coal slurry through a valve. You can prepare the solution directly at this concentration range for immediate use.
Precautions When Using PAM in Coal Washing Plants:
1. If not properly handled, undissolved particles may float on the surface of the water. To avoid this, ensure the PAM is fully dissolved before use. Filtering or waiting for complete dissolution is recommended.
2. The dosage must be carefully controlled. Too much or too little can reduce the effectiveness of flocculation. Adjust the amount based on the quality of the coal slurry, flow rate, and washing volume.
3. If the flocculant is underused, the results may not be satisfactory. However, excessive use can lead to issues like clumping or poor settling. To resolve this, consider adjusting the concentration of the PAM solution, increasing the flow rate, or extending the mixing time between the flocculant and slurry.
Understanding these steps and precautions can greatly improve the efficiency of your coal washing process. By following proper procedures, you can ensure that polyacrylamide works effectively while maintaining environmental standards. Whether you're a plant operator or a manager, knowing how to handle PAM correctly is essential for smooth operations and sustainable practices.
If you found this information helpful, feel free to share it with others who might benefit from it. Stay informed, stay safe, and keep your coal washing processes running smoothly with the right tools and knowledge.