公开(公告)号：US20180363077A1

公开(公告)日：2018-12-20

申请号：US15959230

申请日：2018-04-22

Applicant: University of Science and Technology Beijing ,  Tangshan first Tang Baosheng functional materials Co., Ltd.

Inventor： Rong ZHU ,  Guangsheng WEI ,  Tianping TANG ,  Kai DONG ,  Liangxin ZHAO ,  Xuetao WU ,  Fengwu CHEN

IPC: C21C7/064 ,  C21C5/52 ,  C21C5/30 ,  C21C5/56

CPC classification number: C21C7/064 ,  C21C5/30 ,  C21C5/5217 ,  C21C5/5252 ,  C21C5/562 ,  C21C7/068 ,  C21C2005/5276 ,  C21C2007/0093

Abstract: A production method for smelting clean steel from full-scrap steel using duplex electric arc furnaces, which belongs to the field of electric arc furnace steelmaking. This method makes electric arc furnaces located in two positions be connected in series, wherein the electric arc furnace in a first position is dephosphorization electric arc furnace, and the electric arc furnace in a second position is decarbonization electric arc furnace.

公开(公告)号：US20230287529A1

公开(公告)日：2023-09-14

申请号：US17927057

申请日：2021-07-22

Applicant: SOOCHOW UNIVERSITY

Inventor： Shaoyan HU ,  Rong ZHU ,  Deyong WANG

IPC: C21C5/34 ,  C21C5/46

CPC classification number: C21C5/34 ,  C21C5/4606 ,  C21C2005/4626

Abstract: A blowing control method for maintaining a mushroom head of a bottom-blowing nozzle converter is disclosed. Considering the actual state of the mushroom head at the end of the bottom-blowing nozzle tip, the real-time molten steel overheating change during the blowing process, the process requirements of different stages of blowing conversion, and the macroscopic heat balance of the converter, the oxygen-carbon dioxide-lime powder blowing parameters of the inner tube of the bottom-blowing nozzle are dynamically adjusted during the converter smelting process of the bottom-blowing nozzle converter so as to control the cooling intensity, thus achieving precise control of the size of the mushroom head. The present invention maintains the basic stability of the size of the mushroom head at the end of the bottom-blowing nozzle tip, avoiding nozzle blockage caused by an oversized mushroom head and rapid erosion of the nozzle caused by an undersized mushroom head.