水泥窑预热器中堆积物的形成:定性和定量矿物表征

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Sahar Belgacem, Haykel Galai
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引用次数: 0

摘要

在熟料烧成线的预热器系统中提取更多有关堆积形成过程的反应和参数信息,可以有效地减少堆积的形成。为了控制堆积物的出现,建议采用矿物学分析应用于工艺优化(MAA-PO)的诊断步骤。矿物学特征描述是对取自同一堆积层不同层的三个样本进行的。通过定性和定量 X 射线衍射,结合化学分析和红外研究,发现特立尼达岩是导致其生长和固结的关键矿物相。它的出现受制于硫酸盐液相(主要是 Ca -langbeinite)以及 C12A7 和 C4AF 的存在所促进的固固反应。热粉煅烧度、SO3 量、LSF、SR 和 MA 是与堆积矿物学分析相关联的操作数据。根据这种相关性,可以预测每一层形成的反应动力学,并估计每一层的形成时间。结果表明,MAA-OP 是优化熟料生产工艺参数的一种新型方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Build-up formation in cement kiln preheater: qualitative and quantitative mineral characterization
Extracting more information about reactions and parameters governing the build-up formation process, in the preheater system of the clinker burning line, could be an efficient tool to better attenuate their formation. In order to control their appearance, diagnosis steps of mineralogical analysis application for process optimization (MAA-PO) are suggested. Mineralogical characterization is carried out on three samples taken from different layers of the same build-up. The qualitative and quantitative X-ray diffraction, combined with chemical analysis and IR study, shows that Ternesite is the key mineralogical phase responsible for their growth and consolidation. Its appearance is governed by solid-solid reactions promoted by the available sulfate liquid phases, mainly Ca –langbeinite, as well as C12A7 and C4AF presence. The hot powder calcination degree, SO3 amount, LSF, SR and MA are operational data that have been correlated to the build-up mineralogical analysis. Based on this correlation, it is possible to predict the reactions kinetics involving in each layer formation and to estimate the development time of each. Results showed that MAA-OP is a promised novel approach to optimize clinker production process parameters.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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