无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2024, Vol. 56 ›› Issue (7): 135-142.doi: 10.19964/j.issn.1006-4990.2023-0356

• 环境·健康·安全 • 上一篇    下一篇

无机激发剂的改性及其对固硫灰渣的活性激发研究

王巍1(), 郭利辉2, 任思谦1, 花春峰1, 伍媛婷2(), 刘虎林2, 王昭2   

  1. 1.陕西正元环保科技产业(集团)有限公司,陕西 西安 712085
    2.陕西科技大学材料科学与工程学院,陕西 西安 710021
  • 收稿日期:2023-07-07 出版日期:2024-07-10 发布日期:2024-08-01
  • 通讯作者: 伍媛婷(1981— ),女,博士,教授,研究方向为纳米复合材料,能源固体材料的处理技术;E-mail:wuyuanting@sust.edu.cn
  • 作者简介:王巍(1970— ),男,高级工程师,研究方向为燃煤电厂固废综合利用;E-mail:aww0304@126.com
  • 基金资助:
    陕西高校青年创新团队项目(2022-70);混凝土超细掺合料项目(210200148)

Study on modification of inorganic activators and their active excitation on sulfur fixing ash

WANG Wei1(), GUO Lihui2, REN Siqian1, HUA Chunfeng1, WU Yuanting2(), LIU Hulin2, WANG Zhao2   

  1. 1.Shaanxi Zhengyuan Environmental Protection Technology Industry(Group) Co. ,Ltd. ,Xi′an 712085,China
    2.Schoolof Materials Science and Engineering,Shaanxi University of Science & Technology,Xi′an 710021,China
  • Received:2023-07-07 Published:2024-07-10 Online:2024-08-01

摘要:

环保无硫型无机激发剂可消除传统含硫激发剂对环境造成的不利影响,但其在固硫灰渣处理过程中对抗压活性指数的提高不足,限制了工业化应用。为增强无硫型无机激发剂对固硫灰渣掺合料的激发效果,通过引入有机醇胺(TEA)对无机盐体系[CaCO3、CaSiO3、Ca(OH)2]进行复合改性,成功设计了一种TEA-CaCO3-CaSiO3/Ca(OH)2有机-无机复合激发剂,分别研究了无机盐种类、灰渣比和有机醇胺加入量对复合激发剂性能的影响。探索了体系中不同材料间的相互作用对水泥胶砂流动度比和抗压活性指数的影响,进一步提高了水泥胶砂的抗压活性指数、增加了流动度比、改善了无机盐体系的稳定性。结果表明,当灰渣质量比为5∶5、TEA加入量为0.04%、碳酸钙与氢氧化钙加入量分别为1.2%与0.018%时,所得复合激发剂使得胶砂的流动度比保持在97%,28 d抗压活性指数可达105%。这将进一步推动环保型激发剂的工业化应用,促进固硫灰渣的绿色处理。

关键词: 固硫灰渣, 复合激发剂, 抗压活性指数, 流动度比

Abstract:

The adverse effects of traditional sulphur⁃containing activators on the environment can be eliminated by environment⁃friendly sulphur⁃free inorganic activators,but the insufficient improvement of their anti⁃pressure activity index in the treatment of sulphur⁃fixing ash restricts their industrial application.In order to enhance the excitation effect of sulfur⁃free inorganic activator on sulfur fixing ash admixture,a TEA-CaCO3-CaSiO3/Ca(OH)2 organic⁃inorganic compound activator was successfully designed by introducing organic alcohol amine(TEA) to modify the inorganic salt system[CaCO3,CaSiO3,Ca(OH)2].The effects of inorganic salt type,ash content,and proportion of organic alcohol amine on the properties of the compound activator were studied.The influence of the interaction between different materials on the fluidity ratio and compressive activity index of cement mortar was explored,and the compressive activity index of cement mortar was further improved,the fluidity ratio was increased,and the stability of the inorganic salt system was improved.When the ratio of ash to slag was 5∶5,the proportion of TEA was 0.04%,and the amount of calcium carbonate and calcium hydroxide was 1.2% and 0.018%,respectively,the resulting composite activator kept the fluidity ratio of mortar at 97%,and the compressive activity reached 105% at 28 days,which would further promote the large⁃scale production of environmentally friendly activators and promote the green application of sulfur fixation ash.

Key words: sulfur fixing ash, compound activator, compressive activity, mobility ratio

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