Laboratory Mini Ball Mill Pulverisette 23 | Laval Lab- ball mill for coal sample preparation ,The Mini Ball Mill Pulverisette 23 is ideal for the preparation of samples for chemical analysis, chromatography, mass spectrometry or X-ray structural analysis.pulverized coal ball mill - mimitlibrary.orgBelovo Novosibirsk project. In the late 1950s, the Soviet Union looked for new methods of using coal sludge for power generation. Coal-water slurry fuel was made in a ball mill which pulverised the coal or coal sludge. Get a Price