Abstract: This refractory composition is of the type comprising refractory aggregat aluminous cements and additives.80 to 94% of a mixture of 39 parts of aggregates of 2 to 5 mm, 30 parts of aggregates of 0.2 to 2 mm and 20 parts of aggregates of 50 .mu. to 0.2 mm has the following added to it:(a) 4 to 12 parts by weight of an aluminous hydraulic cement;(b) 2 to 8 parts by weight of a refractory material of grain size less than 50 microns, having a large specific surface and a high water-adsorption capacity;(c) 0.01 to 0.6 parts by weight of a deflocculating and/or fluidizing agent for the above-mentioned material;(d) 0.01 to 0.6 parts by weight of a binder capable of increasing the hot and cold physico-mechanical characteristics of the products obtained from this composition and capable of giving rise to a retarding effect on the hydraulic setting of the aluminous cement.