new progress in the grinding process of mineral ultrafine mi

[kathryn]

When materials such as ores are grinded more finely, they can make production more efficient, save a lot of cost, and make tailings recovery easier. The fineness of the grinding materials discussed here generally refers to the P80 particle size of 20 mu m and 7 mu m, which needs to be produced in the production line of energy cost and low cost mill. If you want to achieve the fineness, on the choice of the production line equipment, generally choose the as the main powder grinding equipment, ore grain monomer dissociation need power consumption accounts for about 70% of the total cost of concentrator, the application of the conventional mineral particle size grinding milling equipment to 20 under 20 microns, the traditional ultrafine mill during the grinding cost increases with the reduction of grinding fineness increased exponential function relation.

With traditional fine grinding of mineral grinding machine one problem is that its speed is relatively low, because when the mill speed is higher than the critical speed, grinding medium role with the cylinder rotate by centrifugal force, the power of low speed grinding machine is relatively low, when the fine grinding, low power intensity of mill can not meet the required high mineral industry grinding process, must increase equipment, which increases the production of the traveler, in order to effectively solve these problems, the traditional grinding machine need to use more than 20 mm steel ball diameter, and such a big steel ball gap is big, for grinding fineness is less than 2020 microns particles is too big, the impact and magic ball grinding pressure can't form finely effect for smaller material, but increases the wear rate of the magic ball, makes the production line to produce a large number of unqualified products. Therefore, traditional mills are becoming less and less capable in the face of demanding production requirements, and the production contradictions are urgently needed to be solved.

Based on this, the birth of the new super fine grinder for the super finely ores has brought the dawn, it has a fixed grinding chamber, the application of small grinding medium, in the mill with the aid of a set of high-speed mixer, mixing mill, relying on high strength mixing effect, effectively promote the small grinding medium for high speed rotation, the formation of many compression the rotation of the dielectric layer, the medium layer can produce many pressure and torque, etc, to make material crushing at just the right size. The result of experiment and actual operation is very significant and is a classic of new grinding equipment.