Abstract: The present invention relates to a tapping pipe for a metallurgical melting vessel, such as a converter or an arc furnace.

Abstract: The invention relates to a composition for the production of a refractory ceramic moulded body, a non-fired or fired moulded body formed from the composition and a possibility for use.

Abstract: The invention relates to an elongated stopper device for flow control of molten metal, i.e., for controlling the flow of molten metal from a metallurgical vessel, such as a tundish.

Abstract: Products, especially masses and shaped parts with fire-resistant (refractory) qualities when used in an authorized application, are used in particular in devices for receiving, treating and/or transporting melts. Such melts can be steel melts (ferrous melts), non-ferrous melts (such as copper melts) as well as glass melts or rock melts, whereby such melts customarily have temperatures between 1000° C. and 2000° C. According to the invention these refractory products are used to amend the corresponding melt.

Abstract: This invention concerns a non-basic refractory batch as well as its use.

Abstract: The present invention relates to the use of a magnesia-zirconia brick in regenerator chambers of glass troughs, which are at least partially operated using a reducing atmosphere.

Abstract: The invention relates to a fire resistant ceramic part which can be embodied in the form of an impact pot or a casting gutter and has the following characteristics:—a base (10);—at least two walls (12, 14) which extend from opposite sections (10l, 10r) of the base (10) such that at least some sectors (12.1, 12.3, 12.4) of the inner surfaces thereof run at an angle >0 and <90 degrees from a plane E—E, perpendicular to the base (10), and at opposite inclinations;—an opening (O) is configured between free ends (12r, 14r) of the walls (12, 14);—the distance (dmin, qmin) between the walls (12, 14) is smaller in at least one sector (11) between the base (10) and the opening (O) than it is in the areas (12u, 14u; 12o, 14o) located adjacent the opening (O) and the base (10).

Abstract: The invention relates to a method for the pyrometallurgical production of copper in a converter is provided. According to said method, gas is introduced into the respective molten charge during all steps thereof (charging the converter with cupriferous crude melt, treating the molten charge to obtain Cu2S and slag, removing the slag, converting Cu2S into Cu, emptying the converter).

Abstract: The invention relates to a composition for the production of a refractory ceramic moulded body, a non-fired or fired moulded body formed from the composition and a possibility for use.

Abstract: The invention relates to a gas flushing device for metallurgical melting pots, having the following construction: a porous plug is arranged in an upper cylindrical housing at the gas outlet end thereof and in a lower cylindrical housing on the adjacent section thereof, an annular chamber is provided at least between the lower housing and the porous plug which is filled with a mass, whereby the porous plug, housings and mass are made from a refractory ceramic material.

Abstract: The present invention relates to the use of a magnesia-zirconia brick in regenerator chambers of glass troughs, which are at least partially operated using a reducing atmosphere.

Abstract: The invention relates to a fire resistant substance and to a method for producing a fire-resistant lining. The fire-resistant substance contains MgO sinter and up to 5 wt. % of a reducing agent selected from the group consisting of substances that contain carbon. The lining has several layers with decreasing quantities of reducing agents.

Abstract: This invention concerns a non-basic refractory batch as well as its use.