SCREW FOR TRANSPORTATION OF SOLID MATERIAL WITH SEALING STRUCTURE AND METHOD FOR PRODUCING AND UTILIZATION OF REDUCED METAL Russian patent published in 2007 - IPC F27B7/24 F27D3/08 

FIELD: sealing structure for solid substance feeding screw, in particular, screw for leveling of basic material and product discharge screw positioned in heating furnace capable of lifting solid substance feeding screw.

SUBSTANCE: drive shaft of solid substance feeding screw is extending within through openings provided within both side walls of heating furnace, and is held on liftable supporting devices positioned at both sides of furnace. Sealing structure has sealing blocks positioned outside the furnace on outer edges of through openings, said sealing blocks circumferentially surrounding said through openings, and movable shields equipped with openings for sliding of drive shaft for screw. Movable shields are brought into contact with sealing blocks through sealing members so as to be moved in vertical planes.

EFFECT: increased efficiency by providing reliable sealing of heating furnace even during operation.

12 cl, 9 dwg