Search International and National Patent Collections

1. (WO2018176119) OPEN ARC CONDITION MITIGATION BASED ON MEASUREMENT

Pub. No.:    WO/2018/176119    International Application No.:    PCT/CA2018/050072
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Tue Jan 23 00:59:59 CET 2018
IPC: F27D 11/08
F27B 14/20
F27B 3/08
F27B 3/28
F27B 5/18
F27D 19/00
H05B 7/10
H05B 7/144
Applicants: HATCH LTD.
Inventors: SHEN, Dong
CAMPBELL, Michael Morgan
HAWTHORNE, Steven Robert
Title: OPEN ARC CONDITION MITIGATION BASED ON MEASUREMENT
Abstract:
A system measures parameters of the electricity drawn by an arc furnace and, based on an analysis of the parameters, provides indicators of whether arc coverage has been optimized. Factors related to optimization of arc coverage include electrode position, charge level, slag level and slag behaviour. More specifically, such indicators of whether arc coverage has been optimized may be used when determining a position for the electrode such that, to an extent possible, a stable arc cavity is maintained and an open arc condition is avoided. Conveniently, by avoiding open arc conditions, the internal linings of the furnace walls and roof may be protected from excessive wear and tear.