Due toPlanetary ball millThe strong frictional force generated by the different velocities of the inner wall and the ball acts on the sample inside the can. As the rotational speed increases, the movement of the ball moves away from the position of the tank wall; The grinding ball begins to move inside the tank and collides with the wall of the sample in motion, releasing a large amount of impact momentum. This combination of impact momentum and friction makes the planetary ball mill have a high-strength crushing effect.

The planetary gear adopts a double locking method, with high pressure entering the groove and the bottom screw cap locked in place. No matter how powerful the input ability is, it cannot be disconnected to prevent accidents. The lifting cover is equipped with an electronic lock, which is safe and reliable. When the cabin door is opened, it cannot be operated. The fixed handle of the ball mill tank is designed with an anti backlash gear, which cannot be loosened even when running at high speed. When unloading the tank, simply lift the unloading valve to easily remove the ball mill tank. Digital control adjusts the speed, maintains constant grinding speed, single key menu operation, grinding method can store memory, ensuring the repeatability of grinding results. Due to the continuous filling of coal blocks, the probability of collision between steel balls and lining plates is reduced, the energy is reduced, and the noise generated is also reduced. Audio sensors can detect the amount of coal loading changes in the coal mill. When the amount of coal stored in it is small, the collision of steel balls causes strong noise signals in the coal mill. As the amount of coal stored in it increases, the gaps between the steel balls are gradually filled with material, and the noise signal gradually weakens. The entrance door of the protective cover is not equipped with a door cover, which causes dust to enter the gears inside the protective cover, especially the joint between the hollow shaft of the ball mill and the dynamic and static parts of the protective cover, which is not sealed and exacerbates the entry of dust into the large toothed wheel.

　　Planetary ball millOperating procedures

1. Ball milling jar:

Usually, the weight of the four ball milling tanks (ball milling tank+ball mixing+material+auxiliary material) should be basically the same, and the operation should be kept stable to reduce the noise caused by vibration and extend the service life of the equipment. If the sample is insufficient, two symmetrical ball milling jars can also be used.

Ball milling jar materials: stainless steel ball milling jar, hard alloy ball milling jar, agate ball milling jar, nylon ball milling jar, polyurethane ball milling jar, polytetrafluoroethylene ball milling jar, zirconia ball milling jar, alumina ball milling jar, silicon carbide ball milling jar, and vacuum ball milling jar;

2. Materials:

The diameter of the material is usually less than 1 millimeter, solid particles generally do not exceed 3 millimeters, and soil is allowed to be less than 10 millimeters;

3. Sample size:

The loading capacity (material+ball distribution+auxiliary material) is two-thirds of the capacity of the ball milling tank, and the remaining one-third is used as operating space.

4. Rotational speed

In order to achieve optimal results, parameters such as rotational speed, grinding time, ball distribution (reasonable combination of large and small), material size, quantity, and addition of auxiliary materials should be selected appropriately.

When the groove of the ball is worn on the can lid, it indicates that the operating speed is too high and should be reduced. High speed may not necessarily result in high grinding efficiency. At the beginning of grinding, the speed can be increased (mainly to crush the material), and after a period of grinding (usually not exceeding 2 minutes), the speed can be reduced to increase the grinding efficiency. The grinding efficiency depends on the appropriate combination of ball size (large, small, many, few), material properties, particle size, weight, speed, and operating mode. To improve grinding efficiency and extend the service life of planetary ball mills, it is not necessary or advisable to set the speed too high.

5. Grinding ball:

1. According to user needs, Changsha Miqi produces grinding balls of various diameters, including stainless steel grinding balls, hard alloy grinding balls, corundum grinding balls, zirconia grinding balls, agate grinding balls, and polyurethane grinding balls.

To achieve good results, large and small grinding balls are usually used in combination. Large grinding balls are mainly used for balancing and crushing materials, as well as dispersing small grinding balls. Small grinding balls are mainly used for mixing and grinding samples.

If some colloids, liquids, and other auxiliary materials that do not affect the properties of the test sample are added during wet grinding, the particle size can be finer than that of dry grinding.