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1. (WO2018077044) CONTROL METHOD AND APPARATUS FOR INHIBITING SLAG ENTRAPMENT IN LADLE IN LAST STAGE OF POURING DURING CONTINUOUS CASTING

Pub. No.:    WO/2018/077044    International Application No.:    PCT/CN2017/106043
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Sat Oct 14 01:59:59 CEST 2017
IPC: B22D 11/18
Applicants: BAOSHAN IRON & STEEL CO., LTD.
宝山钢铁股份有限公司
Inventors: SHENTU, Lifeng
申屠理锋
HU, Jikang
胡继康
XI, Jiaqi
奚嘉奇
Title: CONTROL METHOD AND APPARATUS FOR INHIBITING SLAG ENTRAPMENT IN LADLE IN LAST STAGE OF POURING DURING CONTINUOUS CASTING
Abstract:
A control method and apparatus for inhibiting slag entrapment in ladle (1) during continuous casting production. An optimal control model calculating unit (11) receives related signals and data sent by a ladle weight detector (4), a molten steel flow field detector (5), a slag detector (7), a sliding gate opening detector (9), and a process signal interface unit (10), performs calculation and analysis according to an optimal control model to obtain a corresponding optimal control strategy, and outputs the strategy to an electromagnetic brake (6) and a sliding gate controller (8) for slag entrapment inhibition control. Regarding the two processes where a vortex may be formed, by means of different optimal control strategies, which respectively inhibit or destroy the formation of a vortex, slag generation is postponed, and molten steel may flow out without bringing slag out, thereby reducing residual ladle steel and improving molten steel yield.