C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/27
C04B 35/04 (2006.01) C04B 35/043 (2006.01)
Patent
CA 1316183
23843-202 ABSTRACT OF THE DISCLOSURE Disclosed are shaped or unshaped refractory compounds based on extremely pure, low-iron magnesite material in admixture with a zirconium compound, particularly zirconium dioxide, and their use, particularly in the form of burnt moulded bodies or refractory bricks, for lining furnaces or high temperature zones of furnaces for the manufacture of burnt dolomite, burnt lime or burnt magnesite. The refractory compounds according to the inven- tion are characterized by the fact that they contain as magnesite sintered or fused magnesite with a purity of at least 97% by weight of MgO and as admixture 10 to 25% by weight of a zirconium compound with a ZrO2 content of at least 98% by weight, based on MgO. The advantage of the refractory compounds according to the invention lies therein that they can be readily used in furnaces at burning temperatures above 1900°C, whereby they exhibit excellent stability of volume, chemical resistance to the charging material and structural flexibility, and furthermore, make lining with bricks without joint grouting possible.
583977
Didier-Werke A.g.
Fetherstonhaugh & Co.
Nazirizadeh Morteza
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