PROCESS FLOW

THE PROCESS

Blast Furnace process for manufacturing Pig Iron is a very efficient Thermo-Chemical metallurgical process based on counter current principles in which the raw materials are charged in the top of the furnace & pre-heated air blast is blown into the furnace near the bottom. The major raw materials are the iron bearing material-iron ore, the fuel- metallurgical coke, fluxing & alloying materials-lime stone, dolomite, manganese ore & quartzite.

The iron making plant has the following major units:

1. Raw Material Handling System

2. Charge Weigh-batching & skip hoist system

3. B.F. Top charging equipment & Blast Furnace proper

4. Hot Blast System

5. Gas Cleaning System

Cold air blast from the turbo-blower station is heated in hot blast stoves & then let into Blast Furnace through tuyers located near B.F. bottom. At the mouth of the tuyers, the descending coke burns and generates reducing gases, which travels upwards through the charged material and in the process, reduces the iron ore into metallic iron. The flux material present in the charge combines with the mineral impurities (gangue) of iron ore & ash of coke to form slag. Under the temperature conditions prevailing within the Blast Furnace both iron & slag liquefy & percolate down to collect in the hearth. Hot Metal & Slag are tapped out from the Blast Furnace 10-12 times a day. The hot metal is collected in ladles & sent to Pig Casting Machine. The liquid slag is granulated at the B.F. cast house by a jet of water

Group Companies

Jayaswal Neco Industries Limited

Neco Heavy Engineering & Castings Ltd.

NSSL Limited

NECO Ceramics Limited

PROCESS FLOW