How to understand
[Catalog:Technology] [Date:2017-11-10] [Hits:] [Return]
The mass fraction (mass fraction of pulp, pulp) ore quality (dry weight) and the total quality of pulp (ore + water) percentage, here refers to the mass fraction of the slurry concentration in the grinding mill (grinding mass fraction). The grinding concentration is an important factor affecting the productivity of the mill, it determines the grinding medium and wear friction between the materials, the effective density of pulp flow and medium (medium and pulp density difference). In grinding operation, by grinding high mass fraction, this medium surface can be attached to a layer of pulp, thereby enhancing the grinding effect is favorable to grinding. At the same time, the volume of ore in the unit volume of ore, so the large amount of ore. But the slurry concentration is too high, because the pulp density increased, the grinding medium effective density and activity ability and combat effect will be weakened, and the mass fraction of high viscosity, poor liquidity, the total discharge amount is reduced, it will lead to the mill productivity decreases, and even prone to bloating". Therefore, "high concentration" refers to a certain range of the appropriate increase in the grinding quality fraction, which is conducive to improve the grinding effect. Return sand refers to closed grinding, coarse grinding mill by the classifier returns. The amount of ore return is often several times higher than that of the original ore. The ratio of return sand quantity and amount of ore ore called sand returning ratio. Practice has proved that the size of return sand ratio, will directly affect the productivity of the mill. Return sand larger than the total volume of ore mill is increased, thereby increasing the mill discharge speed, residence time of materials in the mill is shortened, to speed up the cycle. In addition, although the return sand coarse ore, but after all, than the fine, so the whole mill feed size is composed of fine, comprehensive results are beneficial to improve the productivity of grinding mill. Figure 16 sh
