Process for the production of a porous sintered magnesia, batch for the production of a heavy clay fireproof product with a granulation of sintered magnesia, such a product and process for its production, delivery of an industrial furnace and industrial furnace

摘要

The present invention relates to a process for producing a grain of sintered magnesia, wherein the sintered magnesia is prepared by sintering pellets, in particular pellets, from MgO flour, preferably from MgO powder, and then mechanically crushing the pellets, sintering in such a way the grain has a grain porosity (total porosity) according to DIN EN 993-1: 1195-04 and DIN EN 993-18: 1999-01 of 15 to 38% by volume, preferably of 20 to 38% by volume, and an offset for producing a coarse ceramic, refractory, shaped or unshaped product containing the porous sintered magnesia, such a product made from the batch, and a method for the production thereof, a lining, in particular a working lining and / or a back wall, of a large-capacity industrial furnace, wherein the Delivery, in particular the working food and / or the Hintermauerung, at least one such product on shows, as well as such an industrial furnace.