B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
B02C17/14—Mills in which the charge to be ground is turned over by movements of the container other than by rotating, e.g. by swinging, vibrating, tilting
PROCEDURE FOR OPERATING AN AIR CIRCULATION CIRCUIT AND FOR TRANSPORTING A MATERIAL CURRENT IN A HOUSING OF A HAMMER CRUSHER, AND THE HOUSING OF A HAMMER CRUSHER TO CARRY OUT THE PROCEDURE