Research on CO emission factors of high-carbon ferrochrome production in submerged arc furnaces

LÜ Chen; LIU Ying; LU Yong; CAI Bofeng

doi:10.13205/j.hjgc.202608017

Volume 44 Issue 8

Aug. 2026

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LÜ Chen, LIU Ying, LU Yong, CAI Bofeng. Research on CO emission factors of high-carbon ferrochrome production in submerged arc furnaces[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(8): 180-187. doi: 10.13205/j.hjgc.202608017

Citation:

LÜ Chen, LIU Ying, LU Yong, CAI Bofeng. Research on CO emission factors of high-carbon ferrochrome production in submerged arc furnaces[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(8): 180-187. doi: 10.13205/j.hjgc.202608017

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Research on CO emission factors of high-carbon ferrochrome production in submerged arc furnaces

doi: 10.13205/j.hjgc.202608017

LÜ Chen¹,
LIU Ying²,
LU Yong³,
CAI Bofeng^{1
,
,}

1. Chinese Academy of Environmental Planning, Beijing 100012, China;
2. Beijing Polytechnic College, Beijing 100042, China;
3. Pony Testing International Group Co. Ltd., Beijing 100095, China

Received Date: 2026-06-18

Abstract

Abstract

Carbon monoxide （CO） is emitted during high-carbon ferrochrome production. However， measured CO emission factor data for different furnace types and process stages remain limited， constraining the accuracy of emission inventory compilation and pollution reduction assessments for the ferroalloy industry. To address the lack of basic CO emission data for high-carbon ferrochrome production， this study selected four typical production facilities in Ulanqab， Inner Mongolia Autonomous Region， China， including two semi-closed submerged arc furnaces and two closed submerged arc furnaces. A combined method integrating manual monitoring and continuous emission monitoring system （CEMS） data was applied. A characteristic ratio between CO and NO _x concentrations was established， and continuous monitoring data were used to calculate CO emissions and product-based emission factors. The results indicated that the CO emission factors of semi-closed submerged arc furnace facilities A and B were 7.06 kg/t and 3.66 kg/t， respectively， while those of the associated pelletizing processes of closed submerged arc furnace facilities C and D were 1.41 kg/t and 0.51 kg/t， respectively. The CO emission level of semi-closed submerged arc furnaces was significantly higher than that of closed submerged arc furnaces. This study provides measured evidence for CO emission accounting and the development of furnace-type-specific emission factors in the high-carbon ferrochrome industry.
- high-carbon ferrochrome,
- submerged arc furnace,
- carbon monoxide,
- emission factor,
- manual monitoring

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References(19)

References

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