{"title":"Effect of scraper movement on the separation performance of air dense medium fluidized bed","authors":"Nianxin Zhou , Zhenfu Luo , Wei Huang , Yuemin Zhao","doi":"10.1016/j.minpro.2017.05.010","DOIUrl":null,"url":null,"abstract":"<div><p><span><span>Experimental studies on the influence of scraper movement on the fluidization of air dense-medium </span>fluidized bed (ADMFB) have been conducted. The maximum bed pressure drop is about 3% when the scraper speed changes from 0 to 0.5</span> <!-->m/s. The minimum fluidized velocity U<sub>mf</sub> decreases as the scraper speed increases. At the same time, the bed density only declines by 3.7%, and the density standard deviation decreases significantly which is mainly caused by the horizontal motion of the medium. The separation tests indicated that the most appropriate scraper speed is between 0.1<!--> <!-->m/s and 0.3<!--> <!-->m/s and it was reasonable to move the scraper at the appropriate rate to get the better separation performance.</p></div>","PeriodicalId":14022,"journal":{"name":"International Journal of Mineral Processing","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2017-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.minpro.2017.05.010","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Mineral Processing","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0301751617301138","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Earth and Planetary Sciences","Score":null,"Total":0}
引用次数: 4
Abstract
Experimental studies on the influence of scraper movement on the fluidization of air dense-medium fluidized bed (ADMFB) have been conducted. The maximum bed pressure drop is about 3% when the scraper speed changes from 0 to 0.5 m/s. The minimum fluidized velocity Umf decreases as the scraper speed increases. At the same time, the bed density only declines by 3.7%, and the density standard deviation decreases significantly which is mainly caused by the horizontal motion of the medium. The separation tests indicated that the most appropriate scraper speed is between 0.1 m/s and 0.3 m/s and it was reasonable to move the scraper at the appropriate rate to get the better separation performance.
期刊介绍：
International Journal of Mineral Processing has been discontinued as of the end of 2017, due to the merger with Minerals Engineering.
The International Journal of Mineral Processing covers aspects of the processing of mineral resources such as: Metallic and non-metallic ores, coals, and secondary resources. Topics dealt with include: Geometallurgy, comminution, sizing, classification (in air and water), gravity concentration, flotation, electric and magnetic separation, thickening, filtering, drying, and (bio)hydrometallurgy (when applied to low-grade raw materials), control and automation, waste treatment and disposal. In addition to research papers, the journal publishes review articles, technical notes, and letters to the editor..
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