Raymond mill common sense

Hardness and Mohs hardness

Hardness: Because it is a destructive test, it can be used on unground rough or expensive ore. There are two types of hardness scale, one is absolute hardness, the other is Mohs hardness (a relative hardness).

Mohs hardness: a common ten kinds of minerals as a standard with each other to distinguish between the scratch hard and soft, customary mineralogy or gemmology are used Mohs hardness.

Mohs hardness of ten points. Talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, diamond.

Mesh is generally characterized by the size of the sieve aperture, the conversion formula is: cm = 16 / mesh

Head English and American, English inch is the number of holes per square inch.

Raymond mill, also known as raymond mill, mill, mine mill, high pressure suspension roller English name:

Raymond mill, is a widely used milling equipment. Raymond mill is a widely used and mining, cement plants, chemical plant grinding equipment, non-metallic mineral processing is one of the important equipment. Because Raymond mill stable performance, strong adaptability, cost-effective, since the introduction of China more than 20 years, has been widely used in non-metallic mineral processing. However, with the rapid development of non-metallic minerals in the field of ultrafine powder applications, downstream enterprises are demanding more and more non-metallic mineral products. Especially for the fineness of products have higher requirements. This makes the traditional Raymond wear powerless. These problems with conventional Raymond grinding have plagued mineral processing companies and equipment manufacturers. These problems are mainly manifested in:

1. Product fineness is low, ordinary Raymond mill fineness generally below 500 heads, these devices can only occupy the lower end of the powder application market.

2. High mechanical failure rate, power consumption, noise, emission pollution

3. System efficiency is low, the product collection system separation is not satisfactory, a large number of fine powder can not be effectively collected in the system caused by repeated cycling waste of power

4. The main wind tunnel design mistakes, into the grinding area of ​​the larger particles of the material and the grind of particles in the future have often been thrown into the wind box gathered in the tail of the snail, and continue to extend forward, so that the amount of air gradually reduced, easy Cause traffic congestion, no powder or less powder, affecting production.