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Effect of Carbon Combustion in Front of Tuyere on Blast Furnace Smelting
Summary:
What is the effect of carbon combustion on blast furnace smelting in front of the tuyere? The following is introduced by the professionals of Taiyuan carbon furnace:(1) to provide the main heat source for blast furnace smelting. Most of the heat consumption such as preheating of blast furnace charge, evaporation and decomposition of water, decomposition of carbonate, direct reduction, melting and overheating of slag iron, heat dissipation of furnace body and heat taken away by gas is supplied by coke combustion in front of tuyere. (2) Provide the reducing agent required for blast furnace smelting The result of the carbon combustion reaction produces a high-temperature reducing gas CO, which provides a reducing agent for the indirect reduction of the solid charge in the upper part of the furnace shaft, and brings the heat to the upper part of the blast furnace during the ascent process.
What effect does the combustion of carbon in front of the tuyere have on the blast furnace smelting? The following is introduced by the professionals of Taiyuan carbon furnace:
(1) Provide the main heat source required for blast furnace smelting
Most of the heat consumption such as preheating of blast furnace burden, evaporation and decomposition of water, decomposition of carbonate, direct reduction, melting and overheating of slag iron, heat dissipation of furnace body and heat taken away by gas is supplied by coke combustion in front of tuyere.
(2) Provide the reducing agent required for blast furnace smelting
As a result of the carbon combustion reaction, the high-temperature reducing gas CO is produced, which provides a reducing agent for the indirect reduction of the solid charge in the upper part of the furnace, and takes the heat to the upper part of the blast furnace to act as a heat transfer medium during the ascent process.
(3) Provide free space required for blast furnace blanking
The combustion and gasification of carbon in front of the tuyere provides about 40% of the free space for the blast furnace blanking, ensuring the continuous decline of the burden.
(4) Affect the distribution of the initial gas flow in the blast furnace
The combustion zone is the birthplace of blast furnace gas, and its size determines the initial distribution of gas flow, which will affect the gas flow distribution in the whole furnace and the blast furnace.
(5) affect the quality of pig iron
The combustion state of carbon in front of the tuyere determines the temperature level and distribution of the furnace cylinder, and then affects the slagging, desulfurization and other chemical reactions between slag and iron, and ultimately affects the quality of pig iron.
If you want to know more, you can consult our Zhongke Metallurgical Construction Group, we will serve you!
Key words:
Metallurgical
Zhongke
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