A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Spheroidized low-heat Portland slag cement and preparation method thereof
The invention provides spheroidized low-heat Portland slag cement and a preparation method thereof. The spheroidized low-heat Portland slag cement has the particle size and interval accumulative distribution as follows: the proportion of the spheroidized low-heat Portland slag cement smaller than 3 microns is 12-24%, and the proportion of the spheroidized low-heat Portland slag cement larger than 45 microns is 6-20%; the average circularity is 0.77 to 0.88, and the average length-diameter ratio is 1.30 to 1.56; hydration heat: 3d < = 180kJ/kg, 7d < = 215kJ/kg, and the proportion of the mixed material is 60-70%; the invention also provides a preparation method of the spheroidized low-heat Portland slag cement, the power consumption of a working section is 20-25kWh/t, and the power consumption is low. The novel dry-process energy-saving vertical grinder is used for grinding and shaping, the particle size distribution of the spheroidized low-heat Portland slag cement is optimized, the porosity is reduced, the particle gradation and particle morphology of the cement are optimized, the compactness of the cement is improved, the pore structure of hardened set cement is improved, and the early-stage and later-stage strength of the cement is improved; and by using a large amount of mixed materials, the hydration heat is reduced.
本发明提供一种球形化低热矿渣硅酸盐水泥及其制备方法，所述球形化低热矿渣硅酸盐水泥粒径及区间累计分布为：＜3μm占比12‑24％，＞45μm占比6‑20％；平均圆形度0.77‑0.88，平均长径比1.30‑1.56；且水化热：3d≤180kJ/kg，7d≤215kJ/kg，混合材料占比60‑70％；还提供一种球形化低热矿渣硅酸盐水泥制备方法，工段电耗20‑25kWh/t，电耗低。本发明通过新型干法节能型立式研磨机研磨整形，对球形化低热矿渣硅酸盐水泥粒径分布进行优化，减小孔隙率，优化水泥颗粒级配及颗粒形貌，提高水泥密实度，改善硬化水泥石孔隙结构，提高水泥早期及后期强度；并通过混合材料的大量使用，降低水化热。
Spheroidized low-heat Portland slag cement and preparation method thereof
The invention provides spheroidized low-heat Portland slag cement and a preparation method thereof. The spheroidized low-heat Portland slag cement has the particle size and interval accumulative distribution as follows: the proportion of the spheroidized low-heat Portland slag cement smaller than 3 microns is 12-24%, and the proportion of the spheroidized low-heat Portland slag cement larger than 45 microns is 6-20%; the average circularity is 0.77 to 0.88, and the average length-diameter ratio is 1.30 to 1.56; hydration heat: 3d < = 180kJ/kg, 7d < = 215kJ/kg, and the proportion of the mixed material is 60-70%; the invention also provides a preparation method of the spheroidized low-heat Portland slag cement, the power consumption of a working section is 20-25kWh/t, and the power consumption is low. The novel dry-process energy-saving vertical grinder is used for grinding and shaping, the particle size distribution of the spheroidized low-heat Portland slag cement is optimized, the porosity is reduced, the particle gradation and particle morphology of the cement are optimized, the compactness of the cement is improved, the pore structure of hardened set cement is improved, and the early-stage and later-stage strength of the cement is improved; and by using a large amount of mixed materials, the hydration heat is reduced.
本发明提供一种球形化低热矿渣硅酸盐水泥及其制备方法，所述球形化低热矿渣硅酸盐水泥粒径及区间累计分布为：＜3μm占比12‑24％，＞45μm占比6‑20％；平均圆形度0.77‑0.88，平均长径比1.30‑1.56；且水化热：3d≤180kJ/kg，7d≤215kJ/kg，混合材料占比60‑70％；还提供一种球形化低热矿渣硅酸盐水泥制备方法，工段电耗20‑25kWh/t，电耗低。本发明通过新型干法节能型立式研磨机研磨整形，对球形化低热矿渣硅酸盐水泥粒径分布进行优化，减小孔隙率，优化水泥颗粒级配及颗粒形貌，提高水泥密实度，改善硬化水泥石孔隙结构，提高水泥早期及后期强度；并通过混合材料的大量使用，降低水化热。
Spheroidized low-heat Portland slag cement and preparation method thereof
一种球形化低热矿渣硅酸盐水泥及其制备方法
SUN ZHISHENG (author) / ZHU WENSHANG (author) / MA ZHAOMU (author) / MA HAIJUN (author) / WANG XINGQIN (author) / WU HONG'AN (author) / LUO MINGYANG (author) / WU YUXIANG (author)
2024-03-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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