Method of manufacture of pig iron

Details Method of manufacture of pig iron Method of manufacture of pig iron

C - Chemistry, Metallurgy

21

B

53/41, 39/98

C21B 7/12 (2006.01) C21B 5/00 (2006.01) F27D 3/15 (2006.01)

Patent

CA 2037834

METHOD OF MANUFACTURE OF PIG IRON ABSTRACT OF THE DISCLOSURE In the manufacture of pig-iron in a shaft furnace, a taphole is closed with hardened plugging compound during making of the iron and is opened for the tapping of the iron and then resealed. The resealing of the taphole comprises inserting hardenable plugging compound into the taphole and, before hardening thereof, driving a hollow tube into the plugging compound. The hollow tube has an open front end. The tube is pulled out at the next tapping. The use of a tube avoids disturbance of the plugging compound and creates a smoother taphole, leading to improved flow of liquid iron.

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