How does the sand making machine achieve quartz sand products with a mesh size of over 40?

To achieve quartz sand products with a mesh size of over 40, the sand making machine utilizes a combination of crushing, screening, and classification processes. Here's how it works:

1. Crushing: The sand making machine starts with a primary crusher, such as a jaw crusher or impact crusher, to reduce the raw quartz ore to a smaller size. The crusher works by applying force to the ore, breaking it into smaller particles.

2. Screening: After the primary crushing stage, the crushed quartz particles are passed through a series of screens with different mesh sizes. The screens separate the particles based on their size, allowing the smaller particles to pass through while retaining the larger ones.

3. Secondary and Tertiary Crushing: The particles that pass through the screens are further crushed in secondary and tertiary crushers, such as cone crushers or impact crushers. This stage generates finer particles with a smaller mesh size.

4. Classification: The crushed and screened quartz particles are then passed through a classification system, which consists of a series of spirals or inclined plates. The classification system separates the particles based on their density and size, ensuring that only the desired quartz sand particles are collected.

5. Polishing and Grading: Finally, the quartz sand particles undergo a polishing and grading process to achieve a smooth, uniform texture and desired mesh size. This step may involve passing the particles through additional screens or using specialized equipment like sand classifiers or wet separators.

By carefully controlling the crushing, screening, and classification processes, the sand making machine can produce quartz sand products with a mesh size of over 40. The exact mesh size achieved will depend on the settings and configuration of the machine, as well as the input material characteristics.