| 刘姚君,刘进强,汪 澜,苏请发,吴慕正.干法脱硫灰对水泥性能的影响研究[J].水泥工程,2016,29(6):10-12 |
| 干法脱硫灰对水泥性能的影响研究 |
| Research on the influence of dry desulfurization ash on cement performance |
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| DOI： |
| 中文关键词: 干法脱硫灰 CaSO3·1/2H2O 缓凝效果 外加剂相容性 |
| 英文关键词: dry process desulphurization ash CaSO3·1/2H2O retarding effect admixtures compatibility |
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| 中文摘要: |
| 在对比了化学试剂CaSO3· 1/2H2O和CaSO4·2H2O对水泥凝结时间的影响基础上，进一步利用CFB-FGD干法脱硫工艺产生的脱硫灰研究了对水泥的凝结时间、力学性能、安定性、外加剂相容性等性能的影响。结果表明，以CaSO3·1/2H2O为主要成分的脱硫灰有显著的缓凝效果，对不同熟料随其掺量增大对强度的影响表现不同，但都表现为超过一定限量后强度降低趋势加快；从扩展度经时损失率角度而言，相对于石膏有较好的外加剂相容性，尤其当使用聚羧酸系减水剂时更好。 |
| 英文摘要: |
| Based on the comparison of effect on cement setting time between the chemical reagent CaSO3· 1/2H2O and CaSO4·2H2O， I further uses desulfurization ash which comes from CFB FGD - dry desulfurization technology to study the the influence of setting time， mechanical performance， stability， admixtures compatibility， etc.Results show that CaSO3·1/2H2O as the main composition of the desulfurization ash has obvious retarding effect， which has different intensity with the increase of the dosage of different clinker，but when gets a certain limit ，both performance show the trend of strength decrease accelerately;From the point of the loss rate of the extension degree，It has good admixture compatibility relative to the gypsum， especially when poly carboxylic acid water reducing agent is better. |
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