C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/135
C04B 35/00 (2006.01) C21B 7/14 (2006.01)
Patent
CA 1046249
ABSTRACT OF THE DISCLOSURE This invention relates to a method of constructing a runner for transferring molten metal and molten slag from a metal melting furnace. The method comprises constructing the runner by stamping or ramming with a first refractory material having a thermal conductivity of 4 K cal/m.h. °C and comprising as a binder, a carbonaceous volatile-matter containing substance, and applying a second refractory material having a thermal conductivity of 2 K cal/m.h. °C, to the surface of the runner which will be in contact with the molten metal and molten slag. The second re- fractory material comprises clay as a binder and is applied in a thickness smaller than the first refractory material, namely, from 30mm to 150mm in thickness. Heat is then applied to the surface to coke and solidify the first refractory material. The construc- tion time of the furnace has been remarkedly reduced producing a much more efficient overall operation with the formation of pollutants.
175722
Shigemitsu Hiroshi
Takahashi Kazuhiko
Takeda Kenzo
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