Cleaning grinding balls

01 Wash with water

Water is our usual cleaning liquid. Before cleaning, we soak the ball mill pot and grinding ball, add detergent and detergent, and then clean it with a brush.

02 Add the corresponding solvent for cleaning

For some sample residues, it is difficult to remove them with water only. At this time, we can use the chemical properties of the residual materials to add the dissolving cleaning solvents, such as acetone, butanone, ethanol (alcohol), oxalic acid, hydrochloric acid, etc., and then soak them for cleaning. When using solvent for cleaning, we should avoid chemical reactions between the added solvent and the material of the ball mill and grinding ball.

In addition, for the wet ball-milled samples, we can directly use the same solvent as the grinding, and the effect is good.

03 No-load operation cleaning of ball mill

We all know that when the ball mill is in operation, the ball in the ball mill pot will move at high speed to make impact and friction. According to this principle, we can combine the above two ways, put the grinding ball and cleaning solvent into the ball mill tank at the same time, and then turn on the machine to let the ball mill run without load. After about half an hour to one hour, the residual samples on the ball mill and ball can be effectively removed, and we can wash them with water.

 In order to reduce the loss of the ball mill and the energy consumption of the ball mill, the rotating speed should not be set too high when the ball mill is running without load. In this way, in addition to water and detergent, we can add aluminum oxide powder, fine sand, quartz sand (for alloying sample residue) or small-size corundum ball, etc. to increase the contact friction, and often produce correct cleaning effect.