Test on the hot utilization of stainless steel refining slag in EAF

Zhao Haiquan

doi:10.7513/j.issn.1004-7638.2021.05.019

Volume 42 Issue 5

Oct. 2021

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Zhao Haiquan. Test on the hot utilization of stainless steel refining slag in EAF[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 120-125. doi: 10.7513/j.issn.1004-7638.2021.05.019

Citation:

Zhao Haiquan. Test on the hot utilization of stainless steel refining slag in EAF[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 120-125. doi: 10.7513/j.issn.1004-7638.2021.05.019

Zhao Haiquan. Test on the hot utilization of stainless steel refining slag in EAF[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 120-125. doi: 10.7513/j.issn.1004-7638.2021.05.019

Citation:

Zhao Haiquan. Test on the hot utilization of stainless steel refining slag in EAF[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 120-125. doi: 10.7513/j.issn.1004-7638.2021.05.019

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Test on the hot utilization of stainless steel refining slag in EAF

doi: 10.7513/j.issn.1004-7638.2021.05.019

Zhao Haiquan

Panzhihua University, Panzhihua 617000, Sichuan, China

Received Date: 2020-07-21
Publish Date: 2021-10-30

Abstract

Abstract

Based on the analysis on hot utilization of stainless steel refining slag, considering the characteristics of electric furnace which it is primary steelmaking process and using electric power, a test on hot pouring residual utilization in electric furnace had been carried out. It is found out that hot pouring residual utilization in electric furnace can not only promote the rapid formation of high basicity slag and improve desulfurization efficiency, but also recycle waste heat and reduce power consumption. After hot utilization, the consumption of lime is reduced by 3 kg/t and lightly burned dolomite by 1.2 kg/t and fluorite by 1.8 kg/t as well, meanwhile electricity consumption is reduced by 5~10 kWh. Electric furnace conditions is improved significantly, where oxidation loss of molten steel is reduced, the consumption of ferrosilicon is reduced by 1.5～2 kg/t and smelting time is shortened by 3～5 minutes per heat. From the aspects of utilization of steel slag, energy conservation and emissions reduction, this research results can be helpful for the development of refining slag utilization.
- electric furnace,
- LF refining slag,
- stainless steel,
- pouring residual,
- utilization of waste heat

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References(18)

References

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