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

作　　者：刘姚君[1] 刘进强[1,2] 汪澜[1] 苏请发 吴慕正 

机构地区：[1]中国建筑材料科学研究总院绿色建筑材料国家重点实验室,北京100000 [2]唐山学院环境化学工程系,河北唐山063000 [3]福建龙净脱硫脱硝工程有限公司,福建龙岩364000

出　　处：《水泥工程》2016年第6期10-12,共3页Cement Engineering

摘　　要：在对比了化学试剂CaSO_3·1/2H_2O和CaSO_4·2H_2O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CaSO_3·1/2H_2O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。Based on the comparison of effect on cement setting time between the chemical reagent CaSO3- 1/2H2Oand 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, stabilily, admixtures compatibility, etc.Resuhs show that CaS03＂ 1/2H20 as the main composition of the de- sulfurization 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 ex- tension degree, It has good admixture compatibility relative to the gypsum, especially when poly carboxylic acid water reducing agent is better.

关 键 词：干法脱硫灰 CaSO3·1/2H2O 缓凝效果 外加剂相容性 

分 类 号：TQ172.6[化学工程—水泥工业]