Title:
METHOD FOR TAPPING MOLTEN METAL FROM METAL FURNACE
Document Type and Number:
Japanese Patent JP2838190
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To extend a life of a molten metal tapping trough by a method wherein molten metal storing trough is made with a stopper of high melting point material engaging with a refractory inner lining of the tapping trough and then a metallic layer is melted near the stopped and an engaged state of the stopped is released to tap the molten metal.
SOLUTION: A tapping trough 1 is inclined and installed between a refining furnace 10 and a casting machine 12 for an anode bar. Molten steel 5 in the refining furnace 10 is once received in an intermediate receiving tank 13 which can be tilted by inclining the furnace in a downward direction, then the molten metal is fed to a molten metal tapping trough 1. The molten metal tapping trough 1 is made such that steel shell 1a is formed with a U-shaped groove, a castable refractory material 2 is lined to its inner surface. As the molten metal tapping trough 1 is used to feed out the molten metal from the refining furnace 10, a copper layer 3 is casted to the surface of the castable refractory material 2. After this operation, an iron ball 4 is held at a projecting part of the copper layer 3 so as to prevent it from being rotated off at the extremity end of the molten metal tapping trough 1. Under this state, molten metal is flowed to stop the molten metal 5 with the iron ball 4, resulting in that the projecting part is melted and the iron ball 4 drops at the casting machine.
Inventors:
HIMENO MASAICHI
IWASAKI EIJI
HASHIUCHI FUMIO
IWASAKI EIJI
HASHIUCHI FUMIO
Application Number:
JP33969895A
Publication Date:
December 16, 1998
Filing Date:
December 26, 1995
Export Citation:
Assignee:
NITSUKO KINZOKU KK
International Classes:
B22D35/00; C21C5/46; F27D3/14; (IPC1-7): F27D3/14; B22D35/00; C21C5/46
Domestic Patent References:
| JP5744168U | ||||
| JP5533978U | ||||
| JP5575644U | ||||
| JP5478707U |
Attorney, Agent or Firm:
Murao Takuo