亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Analysis of corrosion of corundum refractory castables in relation to increased MgO content in dendromass ashes

材料科学 冶金 刚玉 腐蚀 尖晶石 菱镁矿 莫来石 熔渣(焊接) 铬铁矿 陶瓷
作者
Beatrice Plešingerová,Dávid Medveď,Pavol Vadász,Gabriel Sučík,Vladimír Petrov,Radka Bakajsová,Róbert Dzurňák
出处
期刊:Ceramics International [Elsevier BV]
卷期号:49 (16): 26479-26493 被引量:2
标识
DOI:10.1016/j.ceramint.2023.05.183
摘要

Biomass ash has a significantly lower proportion of Al2O3 and higher proportions of K2O, CaO and SiO2 than coal ash. Biomass combustion in power plants increases demands on refractory linings and metal fittings in boilers. Grates and linings of combustion chambers in furnaces and boilers are more susceptible to clogging and are degraded by bio-ash slag. The results of this study suggest that the addition of approximately 2% of powder magnesite waste to the wood-chip fuel can significantly mitigate ash slagging and also corrosion of the corundum refractory material. With regard to the resulting increased MgO content in the dendromass ash, the corrosion of corundum refractory material was studied. The MgO content in the ash was increased by adding powder magnesite waste to ash samples. The results of corrosion tests (1450 °C/7 h) showed that ash slag with MgCO3 addition corroded the corundum material less. Analyses of the post-mortem slag and corrosion interface confirmed: (i) higher K2O concentration in the ash caused increased corundum material corrosion by both vapours (g-s) and melt (l-s); (ii) K2O reacted with Al2O3 at the corrosion interface and also penetrated intensively into the fine-grain matrix by surface diffusion; (iii) MgO remained in the slag; (iv) increased Al2O3 content in the molten slag initiated a liquation of MA-spinel. These results (especially MA spinel liquation from the slag and K2O diffusion through the matrix followed by micro-grain dissolution) indicate that replacing the mullite binder phase in the matrix with MgO and/or spinel could lead to improved resistance of the refractory material to biomass ash slag.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
LMY完成签到 ,获得积分10
1秒前
9秒前
PEITON发布了新的文献求助10
14秒前
15秒前
lenon发布了新的文献求助10
17秒前
半夏完成签到 ,获得积分10
32秒前
41秒前
董可以发布了新的文献求助10
44秒前
49秒前
miracle完成签到 ,获得积分10
51秒前
sss发布了新的文献求助10
57秒前
华桦子完成签到 ,获得积分10
59秒前
凌灵翎完成签到,获得积分10
1分钟前
lenon完成签到,获得积分10
1分钟前
思源应助sss采纳,获得10
1分钟前
1分钟前
1分钟前
欣喜的以丹完成签到,获得积分10
1分钟前
一D发布了新的文献求助10
1分钟前
muhum完成签到 ,获得积分10
1分钟前
实验大牛完成签到,获得积分10
1分钟前
852应助scholar丨崔采纳,获得10
1分钟前
1分钟前
一D完成签到,获得积分10
1分钟前
儒雅致远发布了新的文献求助10
2分钟前
YiPeng完成签到,获得积分10
2分钟前
2分钟前
核桃发布了新的文献求助10
2分钟前
桐桐应助儒雅致远采纳,获得10
2分钟前
核桃完成签到,获得积分0
2分钟前
排骨大王完成签到,获得积分10
2分钟前
2分钟前
joker完成签到 ,获得积分10
2分钟前
核桃发布了新的文献求助100
2分钟前
2分钟前
温暖元容完成签到,获得积分10
2分钟前
scholar丨崔发布了新的文献求助10
2分钟前
2分钟前
淡定的彩虹完成签到,获得积分10
2分钟前
2分钟前
高分求助中
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3990020
求助须知:如何正确求助?哪些是违规求助? 3532077
关于积分的说明 11256276
捐赠科研通 3270943
什么是DOI,文献DOI怎么找? 1805139
邀请新用户注册赠送积分活动 882270
科研通“疑难数据库(出版商)”最低求助积分说明 809228