Method of feeding material to a horizontal shaft impact crusher, and a crushing device

摘要

A crushing device comprises a horizontal shaft impact crusher (1) having an impeller (4) rotating around a horizontal shaft (6) and at least one curtain (16, 18) against which material may be crushed. The crushing device further comprises a first feeding device (109) for feeding a first type of material to be crushed to a crushing chamber (10) of the horizontal shaft impact crusher (1), a second feeding device (117) for feeding a second type of material, having a smaller average particle size than the first type of material, to the crushing chamber (10) simultaneously with the first feeding device (109) feeding the first type of material to the crushing chamber, and a mixing arrangement (8, 54) for least partially mixing the first and the second types of materials with each other before bringing them into contact with the impeller (4).