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:
Aug. 08, 2023
Filed:
May. 23, 2019
Nanyang Hanye Special Steel Co., Ltd, Henan, CN;
Shucheng Zhu, Nanyang, CN;
Hu Zhao, Nanyang, CN;
Shaopu Xu, Nanyang, CN;
Zhongbo Li, Nanyang, CN;
Hongyang Li, Nanyang, CN;
Yang Yang, Nanyang, CN;
Zhenglei Tang, Nanyang, CN;
Tao Zhang, Nanyang, CN;
Qingbo Liu, Nanyang, CN;
Zhanjie Zhang, Nanyang, CN;
Jiheng Yuan, Nanyang, CN;
Sa Yu, Nanyang, CN;
Wenju Kang, Nanyang, CN;
Xi Chen, Nanyang, CN;
Shuai Zhang, Nanyang, CN;
Bo Li, Nanyang, CN;
Zhiquan Du, Nanyang, CN;
Di Zhao, Nanyang, CN;
Liang Li, Nanyang, CN;
Peng Jiang, Nanyang, CN;
Yansheng Xue, Nanyang, CN;
Keyi Fu, Nanyang, CN;
Yingjie Wang, Nanyang, CN;
Yongqi Yuan, Nanyang, CN;
Zhenzhen Dong, Nanyang, CN;
Baiming Pang, Nanyang, CN;
Haiming Zheng, Nanyang, CN;
Liang Chen, Nanyang, CN;
Weibo Quan, Nanyang, CN;
Xianxing Zhu, Nanyang, CN;
Gaojian Yuan, Nanyang, CN;
Chun Yang, Nanyang, CN;
Yong Wang, Nanyang, CN;
Yibo Bai, Nanyang, CN;
Gazi Li, Nanyang, CN;
Yuliang Lv, Nanyang, CN;
Xibin Wang, Nanyang, CN;
Yi Ren, Nanyang, CN;
NANYANG HANYE SPECIAL STEEL CO., LTD, Henan, CN;
Abstract
Disclosed is a slag discharging method in a process of producing ultra-low phosphorus steel, which relates to the technical field of iron and steel smelting, and in which molten steel is mixed with lime first to produce basic slag; then converting is performed with oxygen to increase the oxidizability of the basic slag; and a carbon-containing reducing agent is finally added, so that in the process that the carbon is oxidized to release a large amount of carbon monoxide gas, phosphates are captured, and the basic slag is rapidly foamed and overflows from the opening of the steel ladle, so that conditions are no longer available for rephosphorization. Also disclosed is a method for producing ultra-low phosphorus steel, which includes the above-described slag discharging method in a process of producing ultra-low phosphorus steel, and refining and ingotting after slag discharge.