The furnace body is built by magnesiacalcium brick, chrome magnesium brick or magnesium dolomite brick.
Higher quality of electric smelting chrome magnesium brick is used around the spray lance to
bear scour of high temperature and molten steel.Removable furnace lid is built with chrome magnesium brick or
alumina-magnesia brick. It also can be made by heat-resistant concrete.
Dimensional proportion of furnace hearth is pool depth: inside diameter:
total furnace height = 1:2:3. In the situation of furnace tilting forwards a certain angle, the primary molten steel
is poured into by swiveling ladle. At this time, pneumatic lance is on the surface of molten steel. When the
furnace is back to the upright position, spray lance is submerged into the deep molten steel and begins to blow
and refine. After refining, steel is still out from furnace lid. |