The hardness of grinding media ball
Keep the hardness just right. When we choose wear-resisting grinding media ball, often be the hardness problem of the grinding media ball. About the hardness, not the bigger the better, is the appropriate hardness value. Simply put, the higher the hardness, the greater the impact reaction during the process of falling, increasing the ball loss. There into the wear particle size is large, the same will accelerate the grinding media ball wear. When the feed rate of the ball mill is increased or the grinding rate is required to be too fine, the service efficiency of the ball mill wear-resistant grinding media ball is in a lower range, thus increasing the power consumption of the ball mill and increasing the damage rate of the wear-resistant grinding media Ball. Therefore, the ball mill with the proportion and grading of grinding media ball and user requirements of finished products, these must be professional and technical research and accounting, in order to achieve the best consumption.
From the way the ball mill works. In the operation environment, the ball mill is divided into two types: wet ball mill and dry ball mill. Dry Ball millwork has a strong corrosion, so as the same wear-resistant grinding media ball, the wear-resistant grinding media ball in the wet grinding efficiency is faster. But in the wet mill, the use efficiency of grinding media ball far exceeds the dry grinding operation, so the wear-resistant grinding media ball in the wet grinding wear is lower.
Look at the properties of wear-resistant grinding media balls and the type of mill. Chromium is easy to be corroded and lost in the processing of wear-resistant grinding media Ball, so the efficiency of grinding is low. It is obvious that wet grinding is more efficient than dry grinding. Therefore, the effective use of wear-resistant grinding media balls can greatly improve the efficiency and reduce the cost. Therefore, the larger the mill, its grinding efficiency is higher.
Therefore, we can reduce the wear of wear-resistant grinding media ball in the ball mill by the above three ways to reduce the degree of wear-resistant grinding media ball wear, thereby ensuring the normal and stable operation of the ball mill, so as to keep the reasonable production of particles The proper usage method can make the wear-resistant grinding media ball better use in the industrial production.
Ball mill, the harder the hardness of the ball, the better?
Grinding media Ball is one of the essential parts of ball mill. The quality of grinding media ball affects not only the productivity of the ball mill, but also the consumption of ball, and then affects the cost of grinding medium. The pursuit of high hardness and low single consumption is not right. High hardness and low consumption do not mean low cost, high hardness and low consumption of the ball is often very expensive. High hardness does not necessarily increase productivity or even decline, only high productivity can make the consumption index decreased.
Therefore, the primary criteria for the selection of grinding media balls should be high mill productivity and low cost of grinding media. Only high productivity and low grinding medium cost can have good economic benefits, economic benefits are the necessary conditions for the survival and development of enterprises. When choosing grinding media ball, two problems are often neglected: 1. The harder the grinding media ball well is, the better the hardness value is; 2. The density of grinding media ball is also a noticeable problem. As for the influence of hardness, generally speaking, as the hardness increases, as long as it does not break, the single consumption of the grinding media ball decreases, and the deformation of the ball body is reduced, the absorption deformation energy of the ball body is small in the process of crushing, and the energy can be used more for crushing mineral grains The productivity of the mill can be increased. But the increase in hardness of grinding media balls can only be moderate, there is an appropriate range, not the harder the better. If only ball consumption is considered, the higher the hardness, the lower the consumption. But for the productivity of the ball mill, the productivity increases with the increase of the hardness of the ball in a certain range, but when the hardness exceeds a certain range, the productivity of the mill decreases. When the hardness of grinding media ball is too high, there are two unfavorable reasons for grinding: 1. The grinding media Ball bounces seriously, causing part of the energy loss in the rebound, so the energy of grinding media ball is not more used for crushing, thus affecting the crushing; 2 When the ball and the ball contact with each other, sliding severe, cannot effectively engage in the ball between the mineral particles, so that the grinding of mineral particles weakened.
In short, the hardness of the ball mill is not the harder the better, should be taken into account a variety of factors in order to ensure productivity, so as to maximize production efficiency.