| abstract |
A magnesia-hercynite brick and the preparation method thereof. The chemical composition of the magnesia-hercynite brick comprises 2.5-9.6 wt% of Fe 2 O 3 , 2.9-12 wt% of Al 2 O 3 and 76-93 wt% of MgO. The preparation method comprises adding binder to magnesia and hercynite, pressure molding, drying and sintering at high temperature. The product can be used in high temperature field, especially in the burning zone of dry method cement rotary kiln. The problem of Cr 6+ pollution of conventional magnesite-chrome brick is solved by the magnesia-hercynite brick. |