Trough hearth construction and method for plasma arc furnace

摘要: An improved hearth construction and method are disclosed for plasma arc furnaces adapted melting metallic raw or scrap materials based on using a shaped receptacle, e.g., an annular-shaped trough, integrally molded into the furnace which enables molten to rapidly accumulate accumulated be contacted by long columns very early in procedure, thereby substantially reducing damage torch parts due flashing improving operating efficiency.