METHOD FOR CONSTRUCTING A RUNNER FOR METAL MELTING FURNACE

摘要

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. .degree.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. .degree.C, to the surface of the runner which will be in contact with the molten metal and molten slag. The second refractory 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 construction time of the furnace has been remarkedly reduced producing a much more efficient overall operation with the formation of pollutants.