A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ardealite-based cement setting retarder as well as preparation method and application thereof
The invention provides an ardealite-based cement setting retarder and a preparation method and application thereof. The ardealite-based cement setting retarder is prepared by taking, by mass, 90%-95%of ardealite, 3%-6% of slag powder or fly ash and 2%-4% of calcium quicklime powder or calcium slaked lime powder or carbide slag powder, adding an appropriate amount of an alkali activator, mixing and balling; the dosage of the alkali activator is converted into the mass of Na2O and is 6%-15% of the dosage of the slag powder or the coal ash. According to the invention, soluble phosphorus, fluorine and the like in phosphogypsum can be effectively adsorbed and cured, organic matters are neutralized, accordingly, adverse effects of harmful substances in the ardealite on the cement setting time and the early strength can be greatly reduced, the ardealite-based cement setting retarder is short in aging time, and the production efficiency of the ardealite-based cement setting retarder can be greatly improved.
本发明提供一种磷石膏基水泥缓凝剂及其制备方法和应用，磷石膏基水泥缓凝剂按质量百分数计，由90～95％磷石膏、3～6％矿渣粉或粉煤灰、2～4％钙质生石灰粉或钙质消石灰粉或电石渣粉混合后，外加适量碱激发剂混合、成球制得；所述碱激发剂的用量折算成Na2O的质量计，为所述矿渣粉或所述粉煤灰用量的6％‑15％。本发明可对磷石膏中的可溶磷、氟等进行有效吸附和固化，并对有机物进行中和，从而大大降低磷石膏中有害物质对水泥凝结时间和早期强度的不利影响，且本发明的磷石膏基水泥缓凝剂陈化时间短，大大提高了磷石膏基水泥缓凝剂的生产效率。
Ardealite-based cement setting retarder as well as preparation method and application thereof
The invention provides an ardealite-based cement setting retarder and a preparation method and application thereof. The ardealite-based cement setting retarder is prepared by taking, by mass, 90%-95%of ardealite, 3%-6% of slag powder or fly ash and 2%-4% of calcium quicklime powder or calcium slaked lime powder or carbide slag powder, adding an appropriate amount of an alkali activator, mixing and balling; the dosage of the alkali activator is converted into the mass of Na2O and is 6%-15% of the dosage of the slag powder or the coal ash. According to the invention, soluble phosphorus, fluorine and the like in phosphogypsum can be effectively adsorbed and cured, organic matters are neutralized, accordingly, adverse effects of harmful substances in the ardealite on the cement setting time and the early strength can be greatly reduced, the ardealite-based cement setting retarder is short in aging time, and the production efficiency of the ardealite-based cement setting retarder can be greatly improved.
本发明提供一种磷石膏基水泥缓凝剂及其制备方法和应用，磷石膏基水泥缓凝剂按质量百分数计，由90～95％磷石膏、3～6％矿渣粉或粉煤灰、2～4％钙质生石灰粉或钙质消石灰粉或电石渣粉混合后，外加适量碱激发剂混合、成球制得；所述碱激发剂的用量折算成Na2O的质量计，为所述矿渣粉或所述粉煤灰用量的6％‑15％。本发明可对磷石膏中的可溶磷、氟等进行有效吸附和固化，并对有机物进行中和，从而大大降低磷石膏中有害物质对水泥凝结时间和早期强度的不利影响，且本发明的磷石膏基水泥缓凝剂陈化时间短，大大提高了磷石膏基水泥缓凝剂的生产效率。
Ardealite-based cement setting retarder as well as preparation method and application thereof
一种磷石膏基水泥缓凝剂及其制备方法和应用
LI BEIXING (author) / MA YU (author)
2020-10-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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