1.History of Iron Making
- 3500BC Beads in Ancient Egypt for iron.
- First Iron Production 3000BC Syria and Mesopotamia the comparatively advanced technique of hardening iron weapons by heat treatment was known to the Greeks about 1000 BC.
- They were made by
heating a mass of iron ore and charcoal in a forge or furnace having a forced
draft.
- The iron produced under these conditions usually contained about 3 percent of slag particles and 0.1 percent of other impurities. Occasionally this technique of iron`making produced, by accident, a true steel rather than wrought iron.
- The iron produced under these conditions usually contained about 3 percent of slag particles and 0.1 percent of other impurities. Occasionally this technique of iron`making produced, by accident, a true steel rather than wrought iron.
- The iron produced under these conditions usually contained about 3 percent of slag particles and 0.1 percent of other impurities. Occasionally this technique of iron`making produced, by accident, a true steel rather than wrought iron.
- The iron produced under these conditions usually contained about 3 percent of slag particles and 0.1 percent of other impurities. Occasionally this technique of iron`making produced, by accident, a true steel rather than wrought iron.
- Ironworkers learned to make steel by heating wrought iron and charcoal in clay boxes for a period of several days. By this process the iron absorbed enough carbon to become a true steel.
- Ironworkers learned to make steel by heating wrought iron and charcoal in clay boxes for a period of several days. By this process the iron absorbed enough carbon to become a true steel.
2.Flow Diagram of Steel making Process
3.Different section of Blast furnace
4.Blast Furnace operation Overview
The Blast Furnace Process
1.
The Iron Ore, Coke and Limestone, (the Charge), is conveyed to the top of the
Furnace.
2. The Charge is stored in Bells until the timing is right for the
charge to be dropped into the Furnace.
3. Hot air is then blown through pipes called Tuyeres, to fire the
mixture.
4. The Coke burns to increase the temperature in the Furnace.
5. The Limestone attracts the impurities in the Iron Ore and forms
Slag. This Slag is lighter than the molten Iron and so floats on top of it.
6. As the Furnace fills, the molten Iron is Tapped off. The Slag is
also tapped off at regular intervals.
Most Iron is taken straight from the Blast Furnace to the Steel Mill, but some
is poured into buckets called Pigs. This Iron is called Pig Iron and is used to
make Cast Iron.
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