How to solve the problem of excessive powder content in sand making machine?

Excessive powder content in sand produced by a sand making machine can lead to various issues such as reduced strength and quality of the final product. To solve this problem, you can try the following steps:

1. Adjust the Feed Gradation: Check the gradation of the raw materials being fed into the sand making machine. If the feed contains an excessive amount of fine particles (powders), it will result in a higher powder content in the output sand. Adjust the feed gradation to include more coarse particles and reduce the fine particles.
2. Optimize the Machine’s Operation Parameters: Sand making machines usually have adjustable parameters like rotor speed, feed rate, and discharge settings. Properly optimize these parameters to achieve the desired balance between sand production and powder content reduction.
3. Use Screening Equipment: Introduce screening equipment before the sand making machine to separate larger particles from the fine particles. This way, only the appropriate-sized materials will enter the machine, reducing the powder content in the sand.
4. Control Water Content: Ensure the raw materials have an optimal moisture content. If the materials are too dry, it may result in more powder generation during the crushing process. On the other hand, excessively wet materials might lead to clogging and other operational issues. Maintain an appropriate moisture level in the feed material.
5. Utilize Dust Collection Systems: Install effective dust collection systems to capture the generated powder during the crushing process. This will not only reduce the powder content in the sand but also improve the working environment by controlling dust emissions.
6. Implement Advanced Crushing Technology: Consider using advanced sand making machines that incorporate technologies to minimize powder generation during the crushing process. Some modern machines are designed to reduce fine particle generation and improve overall efficiency.
7. Regular Maintenance: Ensure the sand making machine is regularly maintained and all components are in good working condition. Worn-out parts or improper alignments can lead to increased powder generation.
8. Quality Control of Raw Materials: Ensure that the raw materials used for making sand are of high quality and within the specified standards. Poor-quality materials may have higher amounts of impurities and fine particles, contributing to excessive powder content in the sand.
9. Review the Crushing Process: If the excessive powder content persists, consider consulting with experts or equipment manufacturers to review the crushing process and identify potential improvements or adjustments.

Remember, solving the problem of excessive powder content may require a combination of the above steps, and the approach might vary depending on the specific type and model of the sand making machine being used.