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High-strength slow-setting Portland cement clinker and preparation method thereof
The invention discloses a high-strength slow-setting Portland cement clinker and a preparation method thereof. The high-strength slow-setting Portland cement clinker comprises the following mineral components: C3Sgt; the content of C2S is 1.09%-13.39%, and the content of C3Alt is 63%; the content of C4AF is 13.73%-14.36%, and the content of free calcium oxide in the clinker is less than 1.5%. According to the invention, from the perspective of mineral composition design, the aluminum rate is reduced, the saturation coefficient of limestone is improved, and industrial solid waste coal gangue is utilized to prepare the low tricalcium aluminate (C3Alt; 4.7%), high tricalcium silicate (C3Sgt; the clinker can be prepared by the existing cement production process, and has the characteristics of high strength, stable expansion and shrinkage performance, low early hydration heat release, long setting time, easiness in regulation and control and the like. And meanwhile, the poor adaptability of the admixture and the clinker and other engineering application problems caused by the poor adaptability are avoided.
本发明公开了一种高强慢凝硅酸盐水泥熟料及其制备方法，其矿物组成包括C3S>63％，C2S 1.09％‑13.39％，C3A<4.7％，C4AF 13.73％‑14.36％，熟料中游离氧化钙含量在1.5％以下。本发明从矿物组成设计角度降低铝率，提高石灰石饱和系数，利用工业固废煤矸石制备出了一种低铝酸三钙(C3A<4.7％)，高硅酸三钙(C3S>63％)熟料，这种熟料可以在现有水泥生产工艺下进行制备，并且具有高强度、膨胀收缩性能稳定、早期水化放热低、凝结时间长以及易于调控等特点。同时避免了外加剂与熟料适应性不良及其带来的其他工程应用问题。
High-strength slow-setting Portland cement clinker and preparation method thereof
The invention discloses a high-strength slow-setting Portland cement clinker and a preparation method thereof. The high-strength slow-setting Portland cement clinker comprises the following mineral components: C3Sgt; the content of C2S is 1.09%-13.39%, and the content of C3Alt is 63%; the content of C4AF is 13.73%-14.36%, and the content of free calcium oxide in the clinker is less than 1.5%. According to the invention, from the perspective of mineral composition design, the aluminum rate is reduced, the saturation coefficient of limestone is improved, and industrial solid waste coal gangue is utilized to prepare the low tricalcium aluminate (C3Alt; 4.7%), high tricalcium silicate (C3Sgt; the clinker can be prepared by the existing cement production process, and has the characteristics of high strength, stable expansion and shrinkage performance, low early hydration heat release, long setting time, easiness in regulation and control and the like. And meanwhile, the poor adaptability of the admixture and the clinker and other engineering application problems caused by the poor adaptability are avoided.
本发明公开了一种高强慢凝硅酸盐水泥熟料及其制备方法，其矿物组成包括C3S>63％，C2S 1.09％‑13.39％，C3A<4.7％，C4AF 13.73％‑14.36％，熟料中游离氧化钙含量在1.5％以下。本发明从矿物组成设计角度降低铝率，提高石灰石饱和系数，利用工业固废煤矸石制备出了一种低铝酸三钙(C3A<4.7％)，高硅酸三钙(C3S>63％)熟料，这种熟料可以在现有水泥生产工艺下进行制备，并且具有高强度、膨胀收缩性能稳定、早期水化放热低、凝结时间长以及易于调控等特点。同时避免了外加剂与熟料适应性不良及其带来的其他工程应用问题。
High-strength slow-setting Portland cement clinker and preparation method thereof
一种高强慢凝硅酸盐水泥熟料及其制备方法
MA SUHUA (author) / YU JIANGBO (author) / LI WEIFENG (author)
2024-04-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME