LF-typed ladle refining furnace is used for refining molten steel from primary melting furnace (EAF or Convertor), can create a slightly positive pressure reducing atmosphere, apply such means as submerged arc heating, argon stirring, white slag refining, alloy composition ...
Oil or gas is continually injected into a high temperature furnace where it decomposes into carbon black, which is used for tires, rubber products and pigments in inks, coatings and plastic. Roots type / positive displacement type, or centrifugal type combustion blowers help ...