What is the best way to grind aluminium to a powder?
Use a ball mill loaded with a mix of different sized iron balls to grind the shavings into powder. To keep the grinding action effective, youll need to sift out the dust of the required fineness. This can either be done as a batch process, dumping the contents of the ball mill into a screen, or by a continuous process, using an air blast for example to move dust out of the grinder.