耐火与石灰 ›› 2021, Vol. 46 ›› Issue (1): 5-8.

• 综述 • 上一篇    下一篇

焚烧炉水冷壁用湿法喷涂产品的探索研究

占华生  孙伙长  谢杰华  李金雨  高长贺   

  1. 北京金隅通达耐火技术有限公司, 100091 北京
  • 出版日期:2021-02-10 发布日期:2021-02-05

Study on wet spraying products for water cooling wall of incinerator

Zhan Huasheng  Sun Huochang  Xie Jiehua  Li Jinyu  Gao Changhe   

  1. Beijing Jinyu Tongda Refractories Technologies Co.,Ltd., Beijing 100091, China
  • Online:2021-02-10 Published:2021-02-05

摘要: 为了解决垃圾焚烧炉水冷壁炉墙施工难度大、工期长等问题,对碳化硅质湿法喷涂产品进行了试验探索,研究了不同种类分散剂、缓凝剂、絮凝剂对其喷涂性能的影响。结果表明: (1) 磷酸盐类分散剂加入量为0.15%或聚羧酸类分散剂加入量为0.05%时,喷涂料自流值均处于60%~80%之间,此时分散剂加入量比较适宜; (2) 添加磷酸盐类分散剂的喷涂料,缓凝剂加入量为0.015%时,2 h自流值仍保持在60%左右,满足可泵送时间要求。2#分散剂本身具有很好的缓凝效果,不需要添加缓凝剂就能满足可泵送时间要求; (3) 本试验采用的3种絮凝剂对于磷酸盐类分散剂均有絮凝效果,由于酸碱性差异,絮凝时间有所不同;但对于2#分散剂絮凝作用不明显。综上,添加0.15% 1#分散剂和0.015%缓凝剂的喷涂料,加入0.2%絮凝剂A时,具有适宜的可泵送时间(大于2 h),且絮凝时间ti=4 s、保持塑性时间tm≈10 min、硬化时间ty≈3.7 h,能够满足喷涂施工要求。

关键词: 分散剂, 缓凝剂, 絮凝剂, 湿法喷涂

Abstract: In order to solve the problems of construction difficulty and long construction period of water cooling wall of waste incinerator,the effects of different kinds of dispersant,retarder and flocculant on spraying performance of silicon carbide wet spraying product were studied.The experimental results show that: (1) When the addition of phosphate dispersant is 0.15% or the addition of polycarboxylic dispersant is 0.05%,between 60%~80%,the addition of dispersant is more suitable; (2) Spray paint with phosphate dispersant,when the addition of retarder is 0.015%,self\|flowing values of two hours remain at around 60%,which can meet the pumping time requirements.2# dispersant has a good retarding effect,the pumping time requirement can be satisfied without adding retarder; (3) Three kinds of flocculants used in this experiment all have flocculation effect on phosphate dispersant,the flocculation time varies due to the differences of acidity and alkalinity; However,the flocculation effect of 2# dispersant is not obvious.Above all,the spraying coating with 0.15% 1# dispersant and 0.015% retarder,when adding 0.2% flocculant A,it has appropriate pump time(more than 2 hours),and the flocculation time (ti=4 s),the retention plastic time (tm≈10 min) and the hardening time (ty≈3.7 h) can meet the spraying construction requirements.

Key words: Dispersant, Retarder, Flocculant, Wet spraying

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