· Making Black Powder with a Ball Mill. Just so you know what's going on. This is me in my backyard. I am using a homemade ball mill I've had for 20 years, and Skylighter's ½" antimonyhardened lead balls. Check out my fancydancy mill jar! It's a onegallon plastic mayonnaise jar stuck inside a large coffee can for reinforcement.
The hot air in the mill will dry the coal. This will reduce drying cost. high moisture material, a dryer should be applied to dry the coal before grinding. Phrase three: classifying Ground material will be classified, coarse powder will fall back to the main mill to be ground again.