Wear kinetics of ceramic ball on tumbling milling were studied.The presence of worn balls inside the mill charge has no effect.A zero order kinetic was found so consumption by wear is constant.Total consumption is only influenced by wear, with little influence of balls purge.
This article presents the results of applying a media selection methodology based on a population balance model to a ceramic ball mill; the experimental data were obtained through the marked ball test in a white-cement grinding pilot plant. Three types of balls from different suppliers (I, II and III) were used in order to study the wear occurring in each type of ball. Tests were carried out for 576h and the law of wear for all three types of balls was found to be zero order. These results were introduced into the model to obtain the ball charge of the mill at steady state and the alumina consumption by wear.
Prediction of ball addition for each ball type; it can be concluded that the mill must be recharged with 4 balls per hour in the case of ball types I and II, and 6 balls per hour for ball type IIIDownload : Download full-size image
The ceramic ball mill uses a ceramic material liner, and ceramic alumina balls are used as grinding media. It is the key ball grinding mill equipment for fine grinding after the ceramic glaze is coarsegrinding. The ceramic ball mill machine is widely used for the dry or wet grinding of the ceramic glaze mineral raw materials, such as feldspar, quartz, talc, kaolin, etc.
Due to its small capacity, the ceramic ball mill generally has a loading capacity of 0.05-15 tons/time. It belongs to asmall ball mill, so it is generally used in small batch production during product trial production.
In recent years, the ceramic ball mill machine has not only improved its production capacity and crushing efficiency, but also expanded its application range. From limestone to basalt, from stone production to various ore crushing, the ceramic ball mill can provide high milling performance in various medium crushing, fine crushing, and ultra-fine crushing operations.
As one of the high-quality ceramic ball mill suppliers, in order to match the needs of customers with larger production, we have launched a ceramic ball mill machine with a single charge of 40 tons. The size of the ceramic ball mill barrel is 36007000mm, the barrel rotation speed is 13r/min, and the installed power is 160KW, which has been praised by many customers with large production needs.
The ceramic ball mill media is the same as that of the liner, which is made of alumina ceramics. According to the different grinding materials, the grinding medium can also be made of quartz or silex. As the ceramic ball mill media, ceramic alumina balls have the advantages of low wear, high hardness, high density, and low cost, which can maximize the purity of the crushed materials and obtain high grinding efficiency.
The ceramic alumina balls in the ceramic ball mill machine is generally added to three to four different specifications, which is related to the feed and discharge particle size and the speed of theball milling machine. When only dispersing the material, only one type of ceramic alumina ball can be added. The proportion of grinding ball is related to the grinding method of the ceramic ball mill. The ratio of large balls, medium balls, and small balls in dry and wet ceramic ball mill is also different.
In the grinding process of dry ceramic ball mill machine, the function of large and small ceramic alumina ball is different. Relatively speaking, the large ceramic alumina ball is beneficial to the impact effect, while the small ball is beneficial to the grinding effect. When the ratio of the grinding ball is reasonable, the higher bulk density can be obtained. Therefore, the reasonable ratio of large and small balls is an important factor affecting the efficiency of dry ceramic ball mill machine.
For the wet ceramic ball mill, because of the participation of liquid, the material is crushed by grinding rather than impact. Therefore, the amount of large ceramic alumina balls should be appropriately reduced, and small and medium balls should be added to ensure a good grinding effect. The initial grinding ball ratio of wet ceramic ball mill machine is generally 30% for large ceramic alumina balls, 40% for medium balls and 30% for small balls.
As a ball mills supplier with 22 years of experience in the grinding industry, we can provide customers with types of ball mill, vertical mill, rod mill and AG/SAG mill for grinding in a variety of industries and materials.