Furnaces For Melting Different Materials

1. Grey Cast Iron

(a) Cupola

(b) Air furnace (or Reverberatory Furnace)

(c) Rotary furnace

(d) Electric arc furnace

2. Steel

(a) Electric furnaces

(b) Open hearth furnace

3. Non-ferrous Metals

(a) Reverberatory furnaces (fuel fired) (Al, Cu)

v  Stationary

v  Tilting

(b) Rotary furnaces

v  Fuel fired

v  Electrically heated

(c) Induction furnaces (Cu, Al)

v  Low frequency

v  High frequency.

(d) Electric Arc furnaces (Cu)

(e) Crucible furnaces (AI, Cu)

v  Pit type

v  Tilting type

v  Non-tilting or bale-out type

v  Electric resistance type (Cu)

(f) Pot furnaces (fuel fired) (Mg and AI)

v  Stationary

v  Tilting