US 12,263,487 B2
Refractory lining design for magnetic separation
David Hartwich, Bethel Park, PA (US); and Joshua Sayre, Pittsburgh, PA (US)
Assigned to HarbisonWalker International Holdings, Inc., Pittsburgh, PA (US)
Filed by HarbisonWalker International Holdings, Inc., Moon Township, PA (US)
Filed on Jun. 19, 2023, as Appl. No. 18/211,324.
Prior Publication US 2024/0416360 A1, Dec. 19, 2024
Int. Cl. B03C 1/023 (2006.01); B03C 1/18 (2006.01); C04B 14/34 (2006.01); C04B 14/48 (2006.01); C04B 35/622 (2006.01); C04B 35/76 (2006.01); C04B 111/28 (2006.01)
CPC B03C 1/023 (2013.01) [B03C 1/18 (2013.01); C04B 14/34 (2013.01); C04B 14/48 (2013.01); C04B 35/62204 (2013.01); C04B 35/76 (2013.01); B03C 2201/20 (2013.01); C04B 2111/28 (2013.01); C04B 2235/9676 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of reclaiming refractory material from a working lining of a refractory vessel, comprising:
assembling a first refractory component of the lining with a first non-magnetic refractory product;
assembling a second refractory component of the lining with a second refractory product different from the first refractory product, wherein the second refractory product includes magnetic material dispersed therein;
upon the lining reaching a service life, demolishing the lining to produce a mixture of first refractory component pieces and second refractory component pieces; and
performing magnetic separation on the mixture to separate the second refractory component pieces from the first refractory component pieces.