{"title":"带串联式料斗的无料钟高炉装料和卸料过程中的粒度偏析","authors":"Wang Zeng, Desheng Zou, Guangliang Wang, Wen Zheng, Yichi Zhang, Tianxiang Zhang, Heng Zhou, Shengli Wu, Mingyin Kou","doi":"10.1002/srin.202400306","DOIUrl":null,"url":null,"abstract":"Burden distribution in a blast furnace not only determines the distribution of gas flow but also affects the thermal efficiency and fuel consumption of the blast furnace. Therefore, it is of great significance to study the burden segregation behaviors during the charging and discharging processes in blast furnaces. Herein, a 3D model of a 1:1 bell‐less top blast furnace with serial‐type hoppers is established based on the discrete element method. The model is used to simulate the entire process of the burden falling from the belt until it leaves the weighing hopper. The results show that the particle size segregation in the upper hopper is more severe than that in the weighing hopper, which also seriously affects the size segregation in the weighing hopper. Changing the charging sequence will reduce the segregation degree in two hoppers, but it cannot change the trend of particle size segregation in the final stage of the discharging process. The small particles are found to gather at the end of the discharging process, so the chute angle should be increased in the last few revolutions of the charging matrix to decrease the accumulation of small particles.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Particle Size Segregation during Charging and Discharging Processes in Bell‐Less Blast Furnace with Serial‐Type Hoppers\",\"authors\":\"Wang Zeng, Desheng Zou, Guangliang Wang, Wen Zheng, Yichi Zhang, Tianxiang Zhang, Heng Zhou, Shengli Wu, Mingyin Kou\",\"doi\":\"10.1002/srin.202400306\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Burden distribution in a blast furnace not only determines the distribution of gas flow but also affects the thermal efficiency and fuel consumption of the blast furnace. Therefore, it is of great significance to study the burden segregation behaviors during the charging and discharging processes in blast furnaces. Herein, a 3D model of a 1:1 bell‐less top blast furnace with serial‐type hoppers is established based on the discrete element method. The model is used to simulate the entire process of the burden falling from the belt until it leaves the weighing hopper. The results show that the particle size segregation in the upper hopper is more severe than that in the weighing hopper, which also seriously affects the size segregation in the weighing hopper. Changing the charging sequence will reduce the segregation degree in two hoppers, but it cannot change the trend of particle size segregation in the final stage of the discharging process. The small particles are found to gather at the end of the discharging process, so the chute angle should be increased in the last few revolutions of the charging matrix to decrease the accumulation of small particles.\",\"PeriodicalId\":1,\"journal\":{\"name\":\"Accounts of Chemical Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":16.4000,\"publicationDate\":\"2024-09-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Accounts of Chemical Research\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1002/srin.202400306\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/srin.202400306","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Particle Size Segregation during Charging and Discharging Processes in Bell‐Less Blast Furnace with Serial‐Type Hoppers
Burden distribution in a blast furnace not only determines the distribution of gas flow but also affects the thermal efficiency and fuel consumption of the blast furnace. Therefore, it is of great significance to study the burden segregation behaviors during the charging and discharging processes in blast furnaces. Herein, a 3D model of a 1:1 bell‐less top blast furnace with serial‐type hoppers is established based on the discrete element method. The model is used to simulate the entire process of the burden falling from the belt until it leaves the weighing hopper. The results show that the particle size segregation in the upper hopper is more severe than that in the weighing hopper, which also seriously affects the size segregation in the weighing hopper. Changing the charging sequence will reduce the segregation degree in two hoppers, but it cannot change the trend of particle size segregation in the final stage of the discharging process. The small particles are found to gather at the end of the discharging process, so the chute angle should be increased in the last few revolutions of the charging matrix to decrease the accumulation of small particles.
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.