CEMENT CLINKER HAVING EXCELLENT GRINDABILITY, AND PRODUCING METHOD AND EVALUATION METHOD THEREOF

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PROBLEM TO BE SOLVED : To provide a method in which grindability of clinker may be easily determined with rare earth element contained in ingredient as an indicator, a producing method based on the method and cement clinker in order to solve a problem that it is difficult to directly measure calcination temperature at inner section of kiln in calcination step for cement clinker, thus it is difficult to determine grindability of clinker based on molten state upon calcination. SOLUTION : There is provided cement clinker, and producing method and evaluation method thereof in which with respect to distribution coefficient (Kd) defined with ratio (Rb/Ra) of rare earth element concentration (Ra) of entire clinker relatively to rare earth element concentration (Rb) in clinker gap phase, distribution coefficient of La is 1.2 or less and distribution coefficient of Ce is 2.6 or less. SELECTED DRAWING : None COPYRIGHT : (C)2016, JPO&INPIT