Ball mill
OwnerJean-Paul Bombledinventor
Life of this patent
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Abstract
A novel ball mill providing a maximum efficiency for the balls dropping onto the material to be crushed, this being obtained by associating a vertical tube into which said material is poured together with the ball with means for raising the balls and crushed material passing out of the lower end of the tube, so as to reintroduce same into the upper end of the latter, the sufficiently crushed material being sucked out of the tube at a selected point of its height.
Claims4
A ball crusher comprising a stationary substantially vertical tube, means for feeding the material to be crushed into the upper end of said tube together with crusher balls to drop same into the tube, means for removing said balls and the crushed material out of the lower end of the tube, means for raising the balls thus removed together with any insufficiently crushed material up to the upper end of the tube to return same into the latter and means for separating at least part of the crushed material from the balls at a predetermined point of its travel inside the tube and removing and raising means to discharge said crushed material.
Dependencies are inferred from the claim text.