Refractory element

A refractory blanket comprising an intermediate layer of pliant, heat resistant cloth material having inner and outer faces;

• a heat transmission cooling layer joined to the inner face of said intermediate layer and comprising first liquid passages of flexible tubing sewed along and throughout the inner face of said intermediate layer, a layer of heat resistant cloth material also sewed to the inner face of said intermediate layer over said first liquid passages, and a liquid supply port for connecting said first liquid passages to a source of liquid under pressure;
• an outer ooze cooling layer joined to the outer face of said intermediate layer and comprising a sheet of porous heat resistant insoluble paper material sandwiched between inner and outer layers of heat resistant cloth material, second liquid passages of flexible tubing having a plaurality of outlet ports disposed between said inetermediate layer and said outer ooze cooling layer and arranged to distribute liquid throughout said ooze cooling layer, and fluid passage joints connecting said first and second liquid passages to distribute liquid through said passages when the port of said first liquid passage is connected to a source of liquid under pressure.