脱硫废水替代工艺水制备免烧砖影响因素试验研究  

Experimental Study on the Influencing Factors of the Replacement of Desulphurization Waste Water for Process Water in the Preparation of Unfired Brick

作　　者：李磊 卢锐 刘振生 孔尧辉 秦伟凯 马双忱 LI Lei;LU Rui;LIU Zhensheng;KONG Yaohui;QIN Weikai;MA Shuangchen(Hebei Zhuozhou Jingyuan Thermal Power Company Limited,Zhuozhou 072700,China;Department of Environmental Science and Engineering,North China Electric Power University,Baoding 071003,China)

机构地区：[1]河北涿州京源热电有限责任公司,河北涿州072700 [2]华北电力大学(保定)环境科学与工程系,河北保定071003

出　　处：《粉煤灰综合利用》2023年第1期76-83,共8页Fly Ash Comprehensive Utilization

摘　　要：以免烧砖基本物理性能抗压强度和氯离子固化率作为主要性能指标,开展了脱硫废水替代工艺水制备免烧砖影响因素试验研究。结果表明:脱硫废水与去离子水制得免烧砖无明显性能差别;在一定范围内,水料比越小,各性能越优,就本试验而言,水料比为0.3时,各性能达到最优;粉煤灰、炉渣、石灰、水泥掺合量分别在0.2、0.3、0.15、0.25时性能最优;加工工艺试验表明:预先将石灰与脱硫废水混合,试验组与对照组相比各性能均有明显提高,抗压强度从15.08 MPa升高至22.43 MPa,吸水率从26.79%降低至16.76%,氯离子结合率从33.76%升高至52.11%。本研究为脱硫废水替代工艺水制备免烧砖提供了依据。Taking the basie physical properties,compressive strength and chloride ion euring rate as the main performance indexes,an experimental study was caried out on the factors affecting the preparation of unbumed bricks by replacing process water with desulphurization wastewater.The results show that there is no obvious property diference between desulfurization wastewater and deionized water.In a certain range,the smaller the water/material ratio i,the better the performance will be.In this test,when the water/material ratio is 0.3,the best performance will be achieved.The performance of fly ash,slag,lime and cement is optimal at 0.2,0.3,0.15 and 0.25 respectively.The preliminary test of processing technology showed that the properties of the experimental group were significantly improved compared with the control group when lime was mixed with desulphurization wastewater.The compressive strength increased from 15.08 MPa to 22.43 MPa,the water absorption rate decreased from 26.79%to 16.76%,and the chloride ion binding rate increased from 33.76%to 52.11%.This study provides a basis for the preparation of unfired brick by replacing process water with desulphurization waste water.

关 键 词：脱硫废水 水泥固化 免烧砖 氯离子 抗压强度 

分 类 号：X773[环境科学与工程—环境工程]