SHAFT DRIER Russian patent published in 1996 - IPC

FIELD: construction of shaft driers working in dense filtering descending layer of material; drying of various granulated and loose materials in manufacture of building materials; chemical industry, metallurgy and other branches of industry. SUBSTANCE: mounted in drier shaft are ducts; some rows of these ducts are connected with delivery chamber by means of ports and other rows are connected with suction chamber. Chutes are secured to bottoms of ducts at angle of 135 to 145 deg relative to their bases; chutes are mounted through ports of suction chamber. EFFECT: enhanced reliability. 3 dwg, 1 tbl