A Ball Mill grinds material by rotating a cylinder with steel grinding balls, causing the balls to fall back into the . This formula calculates the critical speed of any ball mill. . Photo of a 10 Ft diameter by 32 Ft long ball mill in a Cement Plant.
A ball mill is a type of grinder used to grind, blend and sometimes for mixing of materials for use . Critical speed can be understood as that speed after which the steel balls (which are responsible for the grinding of particles) start rotating along the . Steel media may spark, becoming an ignition source for these products.