公开(公告)号：US20220258176A1

公开(公告)日：2022-08-18

申请号：US17432486

申请日：2020-06-22

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY

发明人： Liang DONG ,  Yuemin ZHAO ,  Yongxin REN ,  Guanghui WANG ,  Wei DAI ,  Enhui ZHOU ,  Chenlong DUAN ,  Yanjiao LI

IPC分类号： B03B13/04 ,  B03B4/06 ,  B03B5/46

摘要： An intelligent control method for a dry dense medium fluidized bed separator includes supplying air to fluidize a bed; estimating an initial bed density according to a washability curve of a raw coal; detecting a magnetic material content in the bed to obtain a real-time bed density, and adjusting the real-time bed density according to a result from an analysis on a deviation from the initial bed density; during separation, adjusting a medium addition amount and a scraper discharge speed to maintain a stability of a bed height; separating the raw coal in the dry dense medium fluidized bed separator to obtain a clean coal product; and detecting a product ash content of the clean coal product, comparing the product ash content with a target ash content, and if a difference between the product ash content and the target ash content exceeds an expectation, adjusting the initial bed density.