公开(公告)号：US11453832B2

公开(公告)日：2022-09-27

申请号：US17100840

申请日：2020-11-21

申请人： SHANXI COKING COAL GROUP CO., LTD. ,  CHINA UNIVERSITY OF MINING AND TECHNOLOGY ,  JIANGSU HYDROCARBON CLEAN ENERGY TECHNOLOGY RESEARCH INSTITUTE CO., LTD.

发明人： Jinfang Liu ,  Xiahui Gui ,  Yin Peng ,  Linsheng Gong ,  Tiezhu Zhao ,  Pengde Zhang ,  Zijian Ma

IPC分类号： C10L9/00 ,  B01D11/02 ,  B01D11/00 ,  C10L9/02 ,  C10L9/06

摘要： An experimental method for coal desulfurization and deashing using permeation and solvating power of a supercritical fluid includes the following steps. The coal sample is ground and loaded into an extraction kettle with a cover. An inlet valve and an outlet valve of the extraction kettle are opened to circulate the supercritical CO2 fluid in the extraction kettle. The extraction kettle is sealed. By adjusting a temperature and a pressure in the extraction kettle, the supercritical CO2 fluid is kept at its critical point and permeates the coal sample to dissolve organic sulfur, inorganic sulfur and ash in the coal sample. The extraction kettle is depressurized, and the temperature in the extraction kettle is adjusted to gasify the supercritical CO2 fluid. The organic sulfur, the inorganic sulfur and part of the ash are separated from the supercritical CO2 fluid and precipitated at a bottom of the extraction kettle.

公开(公告)号：US20230138748A1

公开(公告)日：2023-05-04

申请号：US17911769

申请日：2020-11-27

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY

发明人： Xiahui Gui ,  Yaowen Xing ,  Shihao Ding ,  Yijun Cao ,  Jiongtian Liu ,  Tao Che ,  Fancai Meng ,  Youfei Zhang ,  Mengdi Xu ,  Min Liu ,  Liyong Wei

IPC分类号： B03D1/16

摘要： A pre-flotation high efficiency slurry conditioning device for wide-particle-grade flotation, suitable for coal slime flotation. Said device comprises a slurry conditioning drum (15) having a columnar structure on top and an inverted frustrum structure below, an ore slurry outlet (4) is provided at an upper part of a side wall, ore slurry pump separation openings (5) are provided at two sides below the ore slurry outlet (4), ore slurry jet openings (17) are respectively provided at two sides of the columnar structure, and circular cutting isolation plates (11) and flow guide plates (10) are provided in alternation at inner sides of the upper half of the slurry conditioning drum (15); a dual channel jet circulation chemical feed system comprises chemical feed pipes (13), each chemical feed pipe (13) comprises an inlet end, a diffusion end, and a chemical feed pipe opening arranged at a throat area of said pipe, the inlet end is connected to a three-way pipe by means of a centrifugal pump (8), which is connected to an ore slurry inlet (6) and an ore slurry pump separation opening (5), a mixing shaft (7) is provided in the axial direction within the slurry conditioning drum (15), a plurality of mixing impellers (14) are arranged on the mixing shaft (7), and the bottom-most two mixing impellers (14) and the lowest two circular cutting isolation plates (11) are arranged at a same horizontal height. The present apparatus can effectively improve coal slime hydrophobic flocculation and fine slime separation, improve an ore slurry preprocessing effect, and effectively alleviate internal flow field pressure within a flotation device.

公开(公告)号：US11358152B2

公开(公告)日：2022-06-14

申请号：US15733895

申请日：2019-04-22

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY

发明人： Xiahui Gui ,  Min Liu ,  Yaowen Xing ,  Yangchao Xia ,  Yijun Cao ,  Jiaqian Luo ,  Peikun Liu ,  Zhigang Wang

IPC分类号： B03B9/00 ,  B03B7/00

摘要： 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.