refractory lining(This optimises iron recovery and simultaneously prevents concentration of heavy metals such as zinc which can reduce the useful life of the refractory lining. Celebration for a furnace by Evening Gazette (Middlesbrough, England) The furnace is divided into 3 sections: the shell, consisting of lower steel bowl and sidewalls, the hearth, consisting of refractory lining the lower bowl, and the roof, that can be water-cooled or refractory-lined, and can easily be shaped into a spherical section or conical section (frustum). Metal Casting Furnaces and Metal Casting Furnace Types Described by Kent Klein / Hobbies community. TFD Alexander Demidov)
