Production of Pig Iron In Blast Furnace

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The best choice for small scale productions of iron and ferroalloys with less power consumptions.

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Production of pig iron in blast furnace here refers to blast furnace with capacity smaller than 500m³for pig iron production.

Mini Blast furnace iron making process is formed of blast bunker system, furnace body system, gas system, hot air system, coal injection system, slag iron disposal system, water system, iron casting system and so on.

Continuous production of liquid pig iron by coke, iron ore (natural rich lump ore, sinter and pellet) and flux (limestone and dolomite) in a vertical reactor blast furnace is described. It is an important part of modern steel production. Modern blast furnace ironmaking is reformed and developed by ancient shaft furnace ironmaking method. Although many ironmaking methods have been developed in the world, blast furnace ironmaking is still the major method of modern ironmaking because of its relatively simple process, large output, high labor productivity and low energy consumption. Its output accounts for more than 95% of the total output of pig iron in the world.

Production process of iron making by mini blast furnace show as following picture:

Here is a typical technical parameters of 230m³for example as following:

No.	Name	Unit	Numerical
1	volume V	m³	230
2	diameter of hearth d	Mm	4200
3	diameter of furnace bosh D	Mm	5100
4	diameter of furnace throat d1	Mm	3200
5	thickness of iron layer h0	Mm	600
6	height of tuyere hf	Mm	2300
7	height of hearth h1	Mm	2600
8	height of belly h2	Mm	2600
9	height of furnace bosh h3	Mm	1500
10	height of shaft h4	Mm	8200
11	belly angle		81.86
12	shaft angle		84.29
13	height of furnace throat h5	Mm	1500
14	effective height Hu	Mm	16500
15	Hu/D		3.24
16	tuyere	Piece	12
17	tap hole	Piece	1
18	slag hole	Piece	1