The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2022
Filed:
Apr. 22, 2019
China University of Mining and Technology, Jiangsu, CN;
Xiahui Gui, Jiangsu, CN;
Min Liu, Jiangsu, CN;
Yaowen Xing, Jiangsu, CN;
Yangchao Xia, Jiangsu, CN;
Yijun Cao, Jiangsu, CN;
Jiaqian Luo, Jiangsu, CN;
Peikun Liu, Shandong, CN;
Zhigang Wang, Beijing, CN;
CHINA UNIVERSITY OF MINING AND TECHNOLOGY, Jiangsu, CN;
Abstract
Disclosed is an underground coal preparation process adopting a water medium, comprising: feeding raw coal into a special underground compact jigging machine to discharge overflow clean coal being dewatered through a φ1 mm fixed screen and screened through a φ13 mm classifying screen, and dewatering powder clean coal with a particle size less than 13 mm to obtain powder clean coal and a centrifugate; grading jigging middling coal by means of a φ13 mm classifying screen into block middling coal and powder middling coal, and dewatering the powder middling coal to obtain powder middling coal and a centrifugal liquid; and sending produced coal slime water to a water medium classifying and separation cyclone, and the obtained coarse middling coal slime and coarse clean coal slime respectively passing through a coarse middling and clean coal slime sieve bends, and then being dewatered.