Abstract: A refractory structure comprising a body of refractory concrete material defining at least one discharge passage for molten metal passing through the body and at least one reinforcing element located within the body or forming a face to face thereof and interlocked mechanically with the refractory concrete with which it is in intimate contact over the whole of any of the surface of the reinforcing element which is juxtaposed to the refractory concrete, the reinforcing element being separated by refractory concrete material from any surface of the refractory structure which contacts the molten metal in use.

Abstract: A wear part for sliding gates used for the outlet of vessels which contain metal melts therein, the wear part being for example a sliding plate, a base plate, an inlet tube or an outlet tube. The wear part includes a refractory material surrounded by a metal mantle, where a fireproof refractory concrete is poured into a mold and hardened therein so that the mold serves as the metal mantle when the concrete has hardened. A lining surrounding a through-bore in the wear part may be cast therewith. The wear part is preferably clamped in a supporting frame.