| 李瑞林,郑志龙,向丛阳,黄 凯,邹兴芳,余明江,伍小成.旁路放风收集料改性磷石膏作水泥缓凝剂的 试验研究[J].水泥工程,2019,32(2):20-21 |
| 旁路放风收集料改性磷石膏作水泥缓凝剂的 试验研究 |
| Experimental Study on Bypass Collection Material Modified Phosphogypsum Used as Cement Retarder |
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| DOI： |
| 中文关键词: 旁路放风收集料 改性磷石膏 水泥 缓凝剂 |
| 英文关键词: bypass colletion material modified phosphogypsum cement retarder |
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| 中文摘要: |
| 水泥窑旁路放风收集料对磷石膏改性效果明显，2%~8%旁路放风收集料辅加3%的粉煤灰，与原状磷石膏混合、加水、搅拌和陈化制备得到改性磷石膏。相比原状磷石膏，将其作水泥缓凝剂时，水泥凝结时间可缩短80 min以上，并且改性效果随着旁路放风收集料掺量增加而增强，初凝和终凝最高可缩短115 min和130 min，能有效解决原状磷石膏直接作水泥缓凝剂时，水泥严重缓凝的现象。 |
| 英文摘要: |
| The effect of cement kiln bypass ventilation collection material on phosphogypsum modification is obvious. 2%~8% by-pass ventilation collection material with 3% fly ash is mixed with original phosphogypsum, adding water, stirred and aged to prepare modified phosphogypsum. Compared with undisturbed phosphogypsum, when used as cement retarder, the setting time of cement can be shortened by more than 80 minutes, and the modification effect will be enhanced with the increase of bypass ventilation collection material content. The maximum initial and final setting time can be shortened by 115 and 130 minutes, which can effectively solve the serious retarding phenomenon of cement when undisturbed phosphogypsum is directly used as cement retarder. |
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