SPINEL-BASED REFRACTORY FOR CEMENT KILN CONTAINING OXIDE OF RARE EARTH ELEMENT

摘要

PURPOSE:To provide spinel-based refractories for cement kiln contg. oxide of a rare earth element, having corrosion resistance and coating sticking property and free from the problem of poisonousness. CONSTITUTION:Refractory stock consisting of 5-90wt.% starting material for MgO-Al2O3 spinel having 30-90wt.% Al2O3 content and 95-10wt.% starting material for magnesia is blended with 0.1-10wt.% one or more kinds of oxides of rare earth elements basing on the amt. of the stock.