Feed chute for particulate materials

Apparatus for filling an open container with particulate material while reducing formation and release of dust, said apparatus comprising

• a cover for closure of said open container;
• an aperture in said cover to receive an incoming downstream flow of solid particulate material and partially vent gas displaced upstream by said incoming flow;
• a plurality of openings in said cover arranged peripherally with respect to said aperture to accelerate venting of gas displaced upstream from the container by said incoming flow of solid particulate material;
• a hollow dust tube comprising gas permeable filter material having upper and lower open ends, the upper open end being feedably arranged downstream from said aperture, fitted through said aperture and secured in filter tight relationship with respect to the plurality of openings in said cover, the lower open end being tapered through at least a portion of its length to substantially conform to the approximate cross-sectional diameter of the downstream-directed particulate flow stream, to moderately impede the flow of particulate material through said lower open end and block the free upstream passage of displaced gas and dust through said lower open end, whereby substantially all upstream displaced gas from the container passes through dust filter material.