METHOD OF AND DEVICE FOR HANDLING FINE-GRAINED MATERIAL CONTAINING FINE DUST (VERSIONS) Russian patent published in 1999 - IPC

FIELD: materials handling facilities; taking out fine grained materials without dusting. SUBSTANCE: in proposed method container sack for semiloose materials is used which is taken out of reusable protective container, is suspended from support and punctured by discharge probe. Plastic sack is punctured by needle-shaped probe with taper head. probe is sealed relative to sack. Head-has several elongated discharge holes and end piece with several injector holes. Fine grains of material whose size does not exceed 400 μm are fluidized and then discharge through discharge holes by means of suction device. Fluidization is provided by means of air or inert gas delivered through end piece of head. Fluidized fine grains of material evacuated from sack pass through discharge holes, come out of probe and pass through flexible channel and further on to place of storage or subsequent processing. Sack is to be preferably made of antistatic or conducting material to preclude sticking of fine grains of material to inner surface of sack. EFFECT: reduced formation of dust, facilitated removed of wastes at unloading of containers. 16 cl, 12 dwg