Composition-specific granulation characteristics of molten slag at improved throughput and high temperature of 1723 K

Energy Storage and Saving Pub Date : 2023-12-01 DOI:10.1016/j.enss.2023.08.007

Junjun Wu , Yu Tan , Yuxiang Fu , Hong Wang , Xun Zhu , Qiang Liao

{"title":"Composition-specific granulation characteristics of molten slag at improved throughput and high temperature of 1723 K","authors":"Junjun Wu , Yu Tan , Yuxiang Fu , Hong Wang , Xun Zhu , Qiang Liao","doi":"10.1016/j.enss.2023.08.007","DOIUrl":null,"url":null,"abstract":"<div><p>Centrifugal granulation is one key step to enable waste heat recovery from the molten slag in the iron and steel industry. Yet, it remains unknown about the granulation characteristics of molten slag with different chemical compositions, especially at high throughput. In this work, we provided an experimental study on centrifugal granulation with four types of molten slags. The stage-specific centrifugal granulation was recorded and analyzed at first. Both effects of atomizer configuration and chemical compositions on granulation were investigated in detail. The cup-type atomizer favors film-mode disintegration and possesses better anti-adhesion capacity although the final granule size was not strongly affected by the atomizer configuration. Most importantly, centrifugal granulation has been demonstrated with appreciable adaptability to composition-specific blast furnace (BF) slag with binary basicity of 0.9–1.3. The present study not only sheds light on the modest effect of the chemical composition of molten slag on centrifugal granulation characteristics, but also gains credit for the adaptivity of CGATER.</p></div>","PeriodicalId":100472,"journal":{"name":"Energy Storage and Saving","volume":"2 4","pages":"Pages 586-596"},"PeriodicalIF":0.0000,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772683523000432/pdfft?md5=84a797f2452ae929db127a489f6a8f5d&pid=1-s2.0-S2772683523000432-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy Storage and Saving","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2772683523000432","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Centrifugal granulation is one key step to enable waste heat recovery from the molten slag in the iron and steel industry. Yet, it remains unknown about the granulation characteristics of molten slag with different chemical compositions, especially at high throughput. In this work, we provided an experimental study on centrifugal granulation with four types of molten slags. The stage-specific centrifugal granulation was recorded and analyzed at first. Both effects of atomizer configuration and chemical compositions on granulation were investigated in detail. The cup-type atomizer favors film-mode disintegration and possesses better anti-adhesion capacity although the final granule size was not strongly affected by the atomizer configuration. Most importantly, centrifugal granulation has been demonstrated with appreciable adaptability to composition-specific blast furnace (BF) slag with binary basicity of 0.9–1.3. The present study not only sheds light on the modest effect of the chemical composition of molten slag on centrifugal granulation characteristics, but also gains credit for the adaptivity of CGATER.

Abstract Image

查看原文本刊更多论文

熔融矿渣在 1723 K 高温条件下的特定成分造粒特性

离心造粒是钢铁工业从熔渣中回收余热的关键步骤之一。然而，人们对不同化学成分的熔渣的造粒特性仍然一无所知，尤其是在高产量的情况下。在这项工作中，我们对四种类型熔渣的离心造粒进行了实验研究。首先记录并分析了特定阶段的离心造粒情况。详细研究了雾化器结构和化学成分对造粒的影响。尽管雾化器的配置对最终颗粒大小的影响不大，但杯型雾化器有利于薄膜模式崩解，并具有更好的抗粘附能力。最重要的是，离心制粒法对二元碱度为 0.9-1.3 的特定成分高炉（BF）渣具有明显的适应性。本研究不仅揭示了熔渣化学成分对离心造粒特性的适度影响，还为 CGATER 的适应性赢得了赞誉。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Energy Storage and Saving

CiteScore

4.70

自引率

0.00%

发文量