What is the nature of Raymond mill?

What is the nature of Raymond mill? The working principle of Raymond mill is to achieve the crushing effect by air selection. Once the feed is made into powder, the fineness is controlled by the fan and the analyzer. How should I explain the fact that Raymond grinds the ore by eating too much and not eating too much? Raymond mill is suitable for processing and calcite, bentonite, kaolin, fly ash, rare earth, charcoal, hundreds of kinds of materials such as Raymond grinding materials suitable for processing a lot of kinds, some high yield production is low, this is the characteristics of the material and processing of ease. But in Raymond grinding process, you will find, it is in the processing of the material than the processing of powder material production, high in processing high hardness material is higher than the soft output. Some materials are tough, not easy to powder, and the yield will be small. Raymond mill is suspended roller rolling crushing material, feed particle size control in 3-5 cm below, some friends will find if you are feed particles rather than the production of feed powder, this is because what? It's very simple, Raymond mill, since it's a roller compaction, it's fine, the grinding layer of the particle is more than the grinding layer of fine powder, so it's easy to crush it.