The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2025
Filed:
May. 21, 2024
Xuanhua Iron and Steel Group Co., Ltd., Zhangjiakou, CN;
University of Science and Technology Beijing, Beijing, CN;
Hbzx High Tech Co., Ltd., Zhangjiakou, CN;
Hongbin Wang, Beijing, CN;
Guangsheng Wei, Beijing, CN;
Rong Zhu, Beijing, CN;
Minghai Zhang, Beijing, CN;
Jinlong Wang, Beijing, CN;
Jianping Jia, Beijing, CN;
Yongqiang Yang, Beijing, CN;
Jianzhong Wang, Beijing, CN;
Yunxiang Zhao, Beijing, CN;
Xin Li, Beijing, CN;
Ceng Li, Beijing, CN;
Huan Chang, Beijing, CN;
Xuanhua Iron and Steel Group Co., Ltd., Zhangjiakou, CN;
University of Science and Technology Beijing, Beijing, CN;
HBZX HIGH TECH CO., LTD., Zhangjiakou, CN;
Abstract
The application provides a method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma, including: using a mixture of hydrogen rich gas and argon gas to generate hydrogen plasma for denitrification of molten steel during at least one of arc furnace smelting, ladle refining, VOD refining, and RH refining. The method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma provided in the application can effectively remove nitrogen from the molten steel by spraying a mixture of argon gas and hydrogen rich gas into the molten steel through a hollow electrode and plasma torch, reducing electrode consumption and electricity consumption per ton steel, and also reducing arc radiation heat loss, improving heating rate, thereby shortening smelting time and reducing production costs.