Societe Europeenne Des Produits Refractaires

Jacques Marius Guigonis

Charles Nicholas McGarry

Eric Thierry Jorge

Serge Rogier

Pierre L Jeanvoine

The invention relates to a novel sintered material, characterized in that it is produced from a batch containing 5 to 40% zircon and in that it has the following chemical composition in % by weight:

Sintered materials produced from zircon and zirconia

A heat exchanger for use in industries concerned with utilizing corrosive or abrasive fluids, either at low or high temperatures, is made of a monolithic body molded from refractory material and includes at least one channel for the fluid to be heated and at least one channel for the fluid to be cooled, these channels being integrally molded and in a mutual heat-exchange relationship.

Heat exchangers molded from refractory material

A refractory composition for use in the manufacture of pipes for casting steel, the composition consisting essentially of: (a) from 96 to 98% by weight of zirconia which is partially stabilized by CaO, MgO or Y.sub.2 O.sub.3, at least 90% of which has a particle size of between 0.1 and 10 .mu.m, and (b) from 2 to 4% by weight of an aluminous hydraulic binder, this composition having the following overall chemical analysis: 1.4 to 3.2% by weight of Al.sub.2 O.sub.3, 3.7 to 4.6% by weight of CaO, or 0.36 to 1.15% by weight of CaO plus 2.7 to 3.5% by weight of MgO, or 0.36 to 1.15% by weight of CaO plus 5.36 to 8.80% of Y.sub.2 O.sub.3, less than 1% by weight of SiO.sub.2 +Na.sub.2 O+Fe.sub.2 O.sub.3 +TiO.sub.2 taken together, and ZrO.sub.2 to make up to 100%.

Mouldable refractory composition based on partially stabilized zirconia

The invention refers to an unshaped refractory composition which can be used in the construction of glass furnace hearths and which comprises by weight:

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Entraigues, France

Jacques Marius Guigonis