How to configure the grinding ball ratio of planetary ball mill
As one of the cores of the experimental ball mill, the configuration of the grinding media is an important issue that we need to pay attention to, which is related to the efficiency and effect of sample grinding. There are various types of grinding media, including grinding balls, grinding pestles, grinding blocks, grinding rods, grinding rings, etc. Among them, grinding balls are commonly used. So how to determine the filling amount of grinding balls in the laboratory ball mill? Hunan Jinda will introduce to you the configuration principles and recommended solutions of grinding balls.
Principles of grinding ball configuration for laboratory ball mill:
There are two aspects to pay attention to when configuring grinding balls. One is the ball material assembly ratio, and the other is the ratio of the number of large and small balls.
1. Regarding the ball material assembly ratio, we can use 1/3 of the volume of the ball mill tank to load the sample, 1/3 to load the grinding balls, and the other one-third as the grinding space, or we can reserve the grinding space. Under this condition, control the mass ratio of the grinding ball to the sample to be between 0.9 and 1.1.
2. For the selection of the number of large and small grinding balls, we can follow the principle of "Equal surface area of large and small balls". First calculate the surface area of grinding balls of different diameters, and then keep the total surface area of grinding balls of each diameter roughly equal, and you can calculate how many grinding balls of each diameter are needed.
Recommended grinding ball configuration scheme for laboratory ball mill
Note: The recommended configuration of grinding balls is suitable for the case where the sample feed particle size is small. If the sample feed particle size is large, you can increase the number of large balls and reduce the number of small balls as appropriate to enhance the crushing effect, and then increase the number of small balls. Finely grind the sample.
The principles and recommended solutions for configuring filled grinding balls for laboratory ball mills are shared with you here. It should be noted that the above solutions can only be used as a reference solution for initial grinding, and each sample grinding has its own suitable grinding ball configuration. program, we need to adjust it through experiments.
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