It is no problem to use coal gangue as sand, but the quality of sand depends on the equipment used. The complete equipment of coal gangue sand production line includes feeding, crushing, sand production, screening and transportation. Common crushing equipment includes jaw crusher (coarse crushing), impact crusher (medium crushing), or one-step hammer crusher directly; The equipment for sand making and fine molding of coal gangue is sand making machine, including HVI sand making machine and VSI sand making machine, which users can choose flexibly.