US 12,188,904 B2
System and method for estimating both thickness and wear state of refractory material of a metallurgical furnace
Pablo Gómez García, Santander Asturias (ES); José Paulino Fernandez Alvarez, Mieres del Camino Asturias (ES); Ignacio Baquet González, Aviles Asturias (ES); José Tomás Símaro, Aviles (ES); Ignacio Herrero Blanco, Gijon Asturias (ES); Enol Fernández Diéguez, Mieres Asturias (ES); and Carlos Javier Suárez Lázare, Turon Asturias (ES)
Assigned to ArcelorMittal, Luxembourg (LU)
Appl. No. 17/779,033
Filed by ArcelorMittal, Luxembourg (LU)
PCT Filed Nov. 27, 2020, PCT No. PCT/IB2020/061212
§ 371(c)(1), (2) Date May 23, 2022,
PCT Pub. No. WO2021/105940, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. PCT/IB2019/060326 (WO), filed on Nov. 29, 2019.
Prior Publication US 2022/0404316 A1, Dec. 22, 2022
Int. Cl. G01N 29/04 (2006.01); C21B 7/24 (2006.01); C21C 5/44 (2006.01); F27D 21/00 (2006.01); G01B 17/02 (2006.01); G01M 5/00 (2006.01); G01M 7/08 (2006.01); G01N 29/12 (2006.01); G01N 29/44 (2006.01); G01N 29/46 (2006.01)
CPC G01N 29/045 (2013.01) [C21B 7/24 (2013.01); C21C 5/44 (2013.01); F27D 21/0021 (2013.01); G01B 17/02 (2013.01); G01M 5/0033 (2013.01); G01M 5/0066 (2013.01); G01M 7/08 (2013.01); G01N 29/12 (2013.01); G01N 29/4427 (2013.01); G01N 29/4436 (2013.01); G01N 29/4472 (2013.01); G01N 29/46 (2013.01); C21C 2005/448 (2013.01); G01N 2291/0234 (2013.01); G01N 2291/0258 (2013.01); G01N 2291/02854 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A system for estimating both thickness and wear state of a refractory material of a metallurgical furnace, the system comprising at least:
a shock wave generator configured to generate at least one shock wave propagating into the refractory material;
a shock wave sensor configured to sense at least one reflected shock wave into the refractory material;
a processor including a database of simulated frequency domain data named simulated spectra representing simulated shock waves reflected in simulated refractory materials of known state and thickness, each simulated spectrum being correlated with both known state and thickness data of the considered simulated refractory material, wherein the processor is configured:
to record the reflected shock wave as a time domain signal, and to convert the time domain signal into frequency domain data so as to define experimental spectrum, and
to compare the experimental spectrum with a plurality of simulated spectra from the database, to determine a best fitting simulated spectrum with the experimental spectrum and to estimate thickness and state of the refractory material of the furnace using known state and thickness data correlated with the best fitting simulated spectrum.