Why cannot a hammer crusher be used to crush high hardness materials?

A hammer crusher is a type of impact crusher that uses a hammer to break down materials. It is suitable for crushing soft and medium-hard materials, such as coal, limestone, gypsum, and other non-abrasive materials. However, it is not suitable for crushing high-hardness materials for several reasons:

1. High wear and tear: High-hardness materials like granite, marble, and cement clinker are more abrasive than soft and medium-hard materials. When these materials come into contact with the hammers and other moving parts of the crusher, they cause high wear and tear, leading to rapid wear and frequent maintenance.

2. Reduced efficiency: As the hammers and other components wear out, the crusher's efficiency decreases, leading to reduced production capacity and increased energy consumption.

3. Particle size distribution: High-hardness materials tend to produce finer particles when crushed, which may lead to inconsistent particle size distribution and lower the quality of the final product.

4. Safety concerns: When attempting to crush high-hardness materials, the hammers may become lodged or stuck, causing the machine to stop working. This not only reduces production but also creates safety hazards for the operators.

Instead of using a hammer crusher for high-hardness materials, it is recommended to use other types of crushers that are better suited to handle these materials, such as cone crushers, impact crushers with specific crushing chambers, or grinding mills. These crushers are designed to handle high-abrasive materials and provide better wear resistance, higher production efficiency, and more consistent particle size distribution.