Shaft process is one of method to iron making process

2. MIDREX PROCESS
• The “Midrex Process”
using The midrex Shaft
Furnace to converts iron
oxide in pellet or lump
form into highly
metallized direct
reduced iron.

3. Con’t
“Simple Process”
Most naturally occuring iron ore
exist as hematite (Fe2O3). In this
process, the chemically bonded
oxygen in the iron ore is removed
using a high temperature reducing
gas composed of “hydrogen (H2) and
carbon monoxide (CO)” to produce
metallic iron (Fe)

4. Feed Materials
• It has processed iron
oxide pellets and lumps
ores forms
• Feed materials have low
grade high sulfur

5. Reducing Gas
• To create reducing gas from “natural gas”. The
natural gas must be first be reformed into
hydrogen (H2) and carbon monoxide (CO)
• The MIDREX process typically uses natural gas as
the reductant and fuel by means of the unique
MIDREX REFORMER

6. Con’t
• MIDREX REFORMER
converts recycled
offgas from the
midrex shaft furnace
plus fresh natural gas
into hydrogen (H2)
and carbon
monoxide (CO)

7. Con’t
• Natural gas plus recycled top gas is heated in a
refractory lined furnace and catalytically
reformed
• The use of recycled gas and the ability to feed
hot reformed gas to the shaft furnace without
quenching and reheating provide for a very
efficiently process

8. Con’t

9. Shaft Furnace
• High quality reducing gas
is introduced into the
burden where the
metallization is highest
and then passes through
the burden in counter-flow
to the decreasing
solids (iron oxide being
converted into metallic
iron)

10. Metallic Iron