What exactly does ‘layer compression crushing’ mean in the context of a cone crusher

As a commonly used medium-sized crushing machine in the mining industry, the cone crusher is widely appreciated for its structural performance. Its high output, stable performance, and ease of automation control have made it a leading direction in crusher development. Cone crushers perform well when crushing materials of medium hardness or higher, with a wide range of compression ratio control, good output and quality, uniform particle size, and low energy consumption. However, early cone crushers had a drawback: the finished product contained a high proportion of needle-like and flake-like particles, resulting in poor particle shape. However, after 1980, some scholars proposed the theory of layer compression crushing. Additionally, many manufacturers often mention that their cone crushers utilise the layer compression crushing principle, resulting in better product particle shape, when introducing their products to customers.

What exactly is layer compression crushing? What conditions must be met to achieve layer compression crushing?

When materials are mutually compressed and ground, and crushing occurs at their cracks and defects, this process is referred to as layer compression crushing. Under normal circumstances, in the actual operation of a cone crusher, single-particle crushing only occurs when the material size is large or the crushing chamber dimensions are too small to form an effective crushing layer. In such cases, single-particle crushing only occurs at the feed and discharge openings. Material-to-material compression inevitably occurs, and most crushing takes place under these conditions, meaning that layer compression crushing occurs throughout the rest of the crushing chamber.

Materials crushed using the layered crushing principle result in more uniform material, with a higher proportion of cubic-shaped particles and a high content of fine-grained material, thereby better aligning with the ‘more crushing, less grinding’ theory. Our company manufactures various types of cone crushers. Click on the website customer service to consult for free immediately, available 24/7.