USE OF UNFIRED REFRACTORY PRODUCTS AS A LINING IN LARGE-VOLUME INDUSTRIAL FURNACES, AS WELL AS AN INDUSTRIAL FURNACE LINED WITH SAID UNFIRED REFRACTORY PRODUCTS

摘要

The invention relates to the use of unfired, carbon carrier-free refractory products, particularly shaped by pressing or unshaped, and containing binders and granules of said refractory materials that form a ceramic bond at temperatures above 900° C, so as to produce magnesia chromite bricks, magnesia spinel and spinel bricks, magnesia zirconia and magnesia zircon bricks, magnesia hercynite and magnesia galaxite bricks, dolomite, dolomite magnesia and lime bricks, forsterite and olivine bricks, magnesia forsterite bricks, magnesia pleonast bricks, and magnesia bricks as a firing-side refractory lining in large-volume industrial furnaces which are operated with an oxidising or substantially oxidising atmosphere for the purpose of producing cement, lime, magnesia and doloma, in the form of compressed bricks or unshaped masses. The bricks have a cold compressive strength of greater than 20 MPa, and the products contain at least one first temporary binder that guarantees bonding of the grains of the granules in a temperature range between room temperature and 500°C, as well as at least one second temporary binder which guarantees bonding of the grains of the granules in the temperature range between 300 and 1000°C.