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Phosphogypsum composite cement retarder and preparation method thereof, and retarding cement and preparation method thereof
The invention discloses an ardealite composite cement retarder and a preparation method thereof, and retarded cement and a preparation method thereof, and belongs to the technical field of cementing materials. The ardealite composite cement retarder is prepared from the following raw materials in parts by weight: 40-80 parts of ardealite, 1-8 parts of carboxyethyl cellulose, 1-5 parts of limestone powder, 2-8 parts of silica fume and 0.5-3 parts of dolomite powder. The preparation method comprises the following steps: uniformly mixing the limestone powder, the silica fume and the dolomite powder, uniformly mixing with the ardealite, aging, adding the carboxyethyl cellulose, grinding and mixing to obtain the ardealite composite cement retarder. The retarding cement provided by the invention comprises the phosphogypsum composite cement retarder. The preparation method of the retarded cement comprises the following steps: grinding cement clinker, a mixed material and the phosphogypsum composite cement retarder, and uniformly mixing to obtain the retarded cement. According to the ardealite composite cement retarder prepared by the method, the influence of ardealite from different producing areas and different batches on the setting time is eliminated.
本发明公开了一种磷石膏复合水泥缓凝剂及制法、缓凝型水泥及制法，属于胶凝材料技术领域。本发明的磷石膏复合水泥缓凝剂由包括以下重量份的原料制成：磷石膏40～80份，羧乙基纤维素1～8份，石灰石粉1～5份，硅灰2～8份，白云石粉0.5～3份；其制备方法为：将石灰石粉、硅灰、白云石粉混匀后，再与磷石膏混匀，陈化，再加入羧乙基纤维素研磨混合，得到磷石膏复合水泥缓凝剂。本发明的缓凝型水泥包括该磷石膏复合水泥缓凝剂。本发明的缓凝型水泥的制备方法：将水泥熟料、混合材与所述磷石膏复合水泥缓凝剂研磨、混匀，得到缓凝型水泥。采用本发明方法制备得到的磷石膏复合水泥缓凝剂，消除了不同产地、不同批次来源的磷石膏对凝结时间的影响。
Phosphogypsum composite cement retarder and preparation method thereof, and retarding cement and preparation method thereof
The invention discloses an ardealite composite cement retarder and a preparation method thereof, and retarded cement and a preparation method thereof, and belongs to the technical field of cementing materials. The ardealite composite cement retarder is prepared from the following raw materials in parts by weight: 40-80 parts of ardealite, 1-8 parts of carboxyethyl cellulose, 1-5 parts of limestone powder, 2-8 parts of silica fume and 0.5-3 parts of dolomite powder. The preparation method comprises the following steps: uniformly mixing the limestone powder, the silica fume and the dolomite powder, uniformly mixing with the ardealite, aging, adding the carboxyethyl cellulose, grinding and mixing to obtain the ardealite composite cement retarder. The retarding cement provided by the invention comprises the phosphogypsum composite cement retarder. The preparation method of the retarded cement comprises the following steps: grinding cement clinker, a mixed material and the phosphogypsum composite cement retarder, and uniformly mixing to obtain the retarded cement. According to the ardealite composite cement retarder prepared by the method, the influence of ardealite from different producing areas and different batches on the setting time is eliminated.
本发明公开了一种磷石膏复合水泥缓凝剂及制法、缓凝型水泥及制法，属于胶凝材料技术领域。本发明的磷石膏复合水泥缓凝剂由包括以下重量份的原料制成：磷石膏40～80份，羧乙基纤维素1～8份，石灰石粉1～5份，硅灰2～8份，白云石粉0.5～3份；其制备方法为：将石灰石粉、硅灰、白云石粉混匀后，再与磷石膏混匀，陈化，再加入羧乙基纤维素研磨混合，得到磷石膏复合水泥缓凝剂。本发明的缓凝型水泥包括该磷石膏复合水泥缓凝剂。本发明的缓凝型水泥的制备方法：将水泥熟料、混合材与所述磷石膏复合水泥缓凝剂研磨、混匀，得到缓凝型水泥。采用本发明方法制备得到的磷石膏复合水泥缓凝剂，消除了不同产地、不同批次来源的磷石膏对凝结时间的影响。
Phosphogypsum composite cement retarder and preparation method thereof, and retarding cement and preparation method thereof
一种磷石膏复合水泥缓凝剂及制法、缓凝型水泥及制法
WANG SHENGGEN (author) / YU JINSONG (author) / PAN WEIDONG (author) / NIU YUNHUI (author) / LU ZHONGYUAN (author) / LI JUN (author) / LIN XIANG (author) / SHI GUOBING (author)
2023-10-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Phosphogypsum cement retarder and preparation method thereof
| European Patent Office | 2020
| European Patent Office | 2023