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Technical and Production Practices on Adding Rare-earth Ferroalloy into RH Furnace
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Zhi-cheng Li1, 2, Shao-hua Xu1, Tao Xu1, Hao-tian Han1, Jin-cai Wang1, Zhi-kang Liu1
Rare Earth Steel | 2019, 45(6) : 14 - 17
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Rare Earth Steel | 2019, 45(6): 14-17
• Production Practice and Management •
Technical and Production Practices on Adding Rare-earth Ferroalloy into RH Furnace
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Zhi-cheng Li1, 2, Shao-hua Xu1, Tao Xu1, Hao-tian Han1, Jin-cai Wang1, Zhi-kang Liu1
Affiliations
  • 1.Rare Earth Steel Plate Plant of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
  • 2.Inner Mongolia Enterprise Key Laboratory of Rare Earth Steel Products Research & Development, Baotou 014010, Inner Mongolia Autonomous Region, China
Published: 2019-10-25 doi: 10.13647/j.cnki.btgkj.2019.06.004
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In this paper, the steel-making production technology of adding rare-earth ferroalloy with the process route of LD-LF-RH-CC was studied. The results showed that the oxygen content of rare earth steel produced with trial production process was significantly lower than that of conventional steel. When the content of S in molten steel of tundish is lower, the inclusions are mainly RE2O2S-CaO, RE2O2S and RE2O2S-Al2O3 below 2.0 μm, which are submicron inclusions with rare earth. The nozzle clogging materials are mainly deoxidation products of rare earth and aluminate of rare earth in steel as well as the aggregation and adhesion of rare earth inclusions are the main causes of nodulation.

rare earth steel  /  rare-earth ferroalloy  /  nozzle clogging  /  inclusions
李志成, 徐少华, 徐涛, 韩浩田, 王进财, 刘智康. RH炉添加稀土铁合金的工艺生产实践. 包钢科技, 2019 , 45 (6) : 14 -17 . DOI: 10.13647/j.cnki.btgkj.2019.06.004
Zhi-cheng Li, Shao-hua Xu, Tao Xu, Hao-tian Han, Jin-cai Wang, Zhi-kang Liu. Technical and Production Practices on Adding Rare-earth Ferroalloy into RH Furnace[J]. Science & Technology of Baotou Steel, 2019 , 45 (6) : 14 -17 . DOI: 10.13647/j.cnki.btgkj.2019.06.004
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Year 2019 volume 45 Issue 6
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Article Info
doi: 10.13647/j.cnki.btgkj.2019.06.004
  • Receive Date：2019-09-16
  • Online Date：2026-10-20
  • Published：2019-10-25
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  • Received：2019-09-16
Affiliations
    1.Rare Earth Steel Plate Plant of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
    2.Inner Mongolia Enterprise Key Laboratory of Rare Earth Steel Products Research & Development, Baotou 014010, Inner Mongolia Autonomous Region, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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