Converter CO2—O2 mixed injection smelting method and method of dynamically controlling fire point area temperature

US11788160B2 · kind B2 · utility

Assignee

• University of Science and Technology Beijing · CN

Inventors

• Chao Feng · San Jose, US
• Rong ZHU · Beijing, CN
• Guangsheng WEI · Beijing, CN
• Baochen Han · Beijing, CN
• Kai Dong · Shanghai, CN
• Xueliang Wang · Hangzhou City, CN
• Wenhe WU · Beijing, CN
• Shaoyan HU · Suzhou, CN
• Weifeng Li · Linxiang, CN
• Juanjuan Jiang · Beijing, CN
• Jianfeng Dong · Beijing, CN

Key dates

• Filing date: Jan 21, 2020
• Grant date: Oct 17, 2023
• Expiry date: Jun 2, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present disclosure provides a converter CO2—O2 mixed injection smelting method and a fire point area temperature dynamic control method. The method realizes online monitoring through an infrared temperature sensor installed inside an oxygen lance, dynamically adjusts the mixing ratio of CO2 and O2 and the height of the oxygen lance position according to the fire point area temperature changes and process requirements in different smelting stages, so that the secondary smelting system interlockingly and dynamically controls the fire point area temperature and the molten pool heating rate.