CEMENT CLINKER, CEMENT COMPOSITION, METHOD FOR PRODUCING CEMENT CLINKER AND METHOD FOR TREATMENT OF WASTE CONTAINING ALKALI COMPONENT

摘要

A cement clinker, characterized in that it contains Al2O3 and Fe2O3 at a mas s ratio of Al2O3/Fe2O3 (hereinafter frequently referred to as IM) of 0.05 to 0.62 and the content Y (mass %) of alkali components and the content X (mass %) of C2S satisfy the formula: 0.0025X + 0.1 <= Y <= 0.01X + 0.8, and preferably the alkali components satisfy the formula: 0 <= Na2O/K2O <= 0.45. The production of the clinker allows the incorporation of alkali components into cement with an advantageous effect of enhancement of the hydration of belite and also with suppression of the lowering of fluidity, which leads to the reuse of wastes containing alkali components as a raw material for cemen t.