The influence of original sulfate on mineral formation of cement clinker
SONG Wenjuan
QU Shenghua
HUANG Liming
YANG Zhenghong
Abstract：In this paper,sulfate from clinker and admixture is classified as original sulfate. The introduction of sulfate of different type and content (such as CaSO4,Na2SO4,K2SO4) into cement raw meal will affect the mineral composition of clinker calcined at high temperature. The results show that the clinker mineral composition is dominated by C3S and C3A when no sulphate is added,and the main mineral composition of clinker is C3S,the content of C3A is reduced,and the structure of C3S is changed from R to M2 when CaSO4 is incorporated. The incorporation of Na2SO4 inhibited the formation of C3S,increased the production of C2S and promoted the formation of C3A. With the increase of Na2SO4 content,the crystal form of C3S changed to M1, T1 and T3;the incorporation of K2SO4 was beneficial to the formation of C3S and C4AF,inhibited the formation of C3A. With the increase of K2SO4 content,the crystal form of C3S gradually changed to M1 and M2.
Keywords：original sulfateclinker mineralmineral compositionmineral microstructure
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 79-83 )