Blast furnace is a kind of industrial equipment used for iron making, and its overall structure is divided into five parts from top to bottom, namely furnace throat, furnace body, furnace waist, furnace belly and furnace cylinder, and equipped with important devices such as cooling equipment, blower and dust collector.The blast furnace shell is made of steel plate, and the inner shell is lined with refractory bricks. It is mainly used for smelting pig iron, ferromanganese, mirror iron and ferrosilicon.
The blast furnace is divided into five parts from top to bottom: furnace throat, furnace body, furnace waist, furnace belly and furnace cylinder.The furnace body is the basic part of the blast furnace, which directly affects the operation efficiency and product quality of the blast furnace.
The role of the furnace shell is to fix and cool all kinds of equipment, to ensure the overall solidity of the blast furnace, in addition to withstand the huge gravity, but also to withstand the thermal stress and the internal gas pressure, so it should have enough strength.The external dimensions of the furnace shell have to be adapted to the inner shape of the blast furnace, the thickness of the furnace parts and the structural form of the cooling equipment.
The internal temperature of the blast furnace is as high as 1400℃, and the general refractory bricks have to be softened and deformed.Blast furnace cooling units are therefore provided to extend the life of the furnace lining, to enable heat to be transferred out of the lining and, in the lower part of the blast furnace, to allow the slag to condense on the lining to form a protective slag skin.
The hot blast furnace is an indispensable and important part of the blast furnace heating and blasting equipment.A modern hot air furnace is a regenerative heat exchanger.The current level of wind temperature is 1000℃-1200℃, high for 1250℃-1350℃, up to 1450℃-1550℃.Improving the thermal efficiency of the hot air furnace and prolonging the life of the hot air furnace is an effective way to increase the air temperature.
Blast furnace blower is the most important power equipment of the blast furnace, which can directly provide the blast furnace with the oxygen needed for smelting.At present, most of the blowers used in large and medium-sized blast furnaces are centrifugal blowers and axial flow blowers driven by turbines.
Automated control systems are widely used, applying a large number of sensors and computer technology to the production process.By monitoring parameters such as gas flow, temperature and pressure in the furnace, the reaction process in the furnace is controlled, ultimately realizing precise positioning and effective control of the production process.
Customized design according to the actual needs of customers.
Blast furnace intelligent technology is applied to material transportation, charge analysis, fuel injection, wind control, emission control and so on.Through accurate data monitoring and intelligent regulation, accurate measurement and automatic control can be realized, making steel production more efficient.
Capable of large-scale production to meet the needs of modern industry for iron ore smelting.The increasing level of automation in the blast furnace has reduced costs while increasing productivity.The longer service life of the blast furnace reduces the waste of resources due to frequent replacement of equipment.
During production, iron ore, coke, and flux are continuously loaded from the top of the furnace, and hot air is blown into the blast furnace from the lower air openings, while fuels such as oil, coal, or natural gas are injected.The iron ore loaded into the blast furnace is exposed to high temperatures, and the coke neutralizes the carbon as well as the carbon monoxide, taking the oxygen out of the iron ore to make pig iron, which is released from the iron outlet.The pulses in the iron ore, coke and ash in the blowing material combine with the fluxes such as limestone added to the furnace to form slag, which is discharged from the iron outlet and the slag outlet respectively.The gas is exported from the top of the furnace and after dedusting, it is used as industrial gas.
| Type |
Height |
Diameter |
Volume |
Yield |
Gas consumption |
| BL1 | 21.2 | 5.5 | 1320 | 1450 | 460 ~ 480 |
| BL2 | 25.2 | 6.5 | 2200 | 2450 | 390 ~ 400 |
| BL3 | 23.2 | 6.2 | 1900 | 2150 | 400 ~ 420 |
| BL4 | 28.2 | 7.5 | 3500 | 3850 | 360 ~ 380 |
*The output will vary according to different materials, feed particle size and other factors
Company: IDM Metallurgy Trading Co., Ltd.
Group Address: Tangshan City, Hebei Province, China
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