公开(公告)号：US20220314233A1

公开(公告)日：2022-10-06

申请号：US17657004

申请日：2022-03-29

Applicant: China University of Mining and Technology

Inventor： Enhui Zhou ,  Yuemin Zhao ,  Liang Dong ,  Chenlong Duan ,  Yongxin Ren ,  Nan Zhou

IPC: B03B9/00 ,  B03B5/34 ,  B03B5/44 ,  B03B7/00 ,  B03B13/00

Abstract: The present disclosure relates to the field of mineral processing and separation, and in particular, to an underground coal hypergravity field separation system and a separation process. The separation system includes a grading hydrocyclone group, hypergravity field separators, feeding pumps, and conveying pumps. Coal collected underground is graded through a grading hydrocyclone first, then is fed into the hypergravity field separators for separation, and finally, is conveyed to a next link for dehydration through the conveying pumps. The separation system of the present disclosure has less supporting equipment, small floor area, and no complex pipeline, and is suitable for a downhole operation. In addition, the hypergravity field separators can provide a high-strength centrifugal acceleration, which can realize rapid separation of coal gangue particles in a radial direction and a tangential direction, and realize effective separation of fine coal gangue particles.

公开(公告)号：US11434444B2

公开(公告)日：2022-09-06

申请号：US16972396

申请日：2019-06-11

Applicant: China University Of Mining And Technology

Inventor： Bo Zhang ,  Yuemin Zhao ,  Yadong Zhang ,  Guanghui Yan ,  Zhenfu Luo ,  Chenlong Duan ,  Liang Dong ,  Enhui Zhou

IPC: C10L9/08 ,  F26B3/092 ,  F26B3/347

Abstract: The present invention is directed towards a process for upgrading lignite comprising: prior to production pre-assess the calorific value of the coal, by selecting a relational expression between a calorific value of lignite and a degree of metamorphism, a moisture content and an ash content thereof based on a ratio of the ash content to the moisture content, pre-assess the calorific value of the coal; combining a relational expression between a production cost and the ash content and moisture content to make a cost budget; determining degrees of deashing and drying; selecting and implementing a lignite ash reduction pretreatment process; and implementing dry sorting first and then drying. The upgrading process has high sorting efficiency, high drying efficiency and low production cost, and meets the requirement for the surface moisture of the raw coal in the dry sorting operation.

公开(公告)号：US10821477B2

公开(公告)日：2020-11-03

申请号：US15767538

申请日：2017-04-12

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

Inventor： Liang Dong ,  Yuemin Zhao ,  Chenlong Duan ,  Junyu Lu ,  Bo Zhang

IPC: B07B9/00 ,  B07B7/12 ,  F26B3/092 ,  F26B21/00 ,  F26B25/22

Abstract: A system for separation and drying of moist fine particle coal includes a blast blower, a surge tank, a moisture detection sensor, a control device and two pipelines, wherein the blast blower is communicated with the surge tank; one end of two pipelines which are connected in parallel is communicated with the surge tank, while the other end is communicated with a fluidized bed; a first pipeline includes a first valve, a first flowmeter, an air heater and an electric butterfly valve which are connected in series sequentially, while the second pipeline includes a second valve and a second flowmeter which are connected in series; the moisture detection sensor is arranged in the fluidized bed; and the control device is connected with the blast blower, the first valve, the first flowmeter, the air heater, the second valve, the second flowmeter and the moisture detection sensor.

公开(公告)号：US20160369194A1

公开(公告)日：2016-12-22

申请号：US15029698

申请日：2015-01-14

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

Inventor： Chenlong Duan ,  Yuemin Zhao ,  Liang Dong ,  Zhenfu Luo ,  Jie Zhao ,  Keji Lv

IPC: C10L5/04 ,  F26B21/00 ,  F26B3/092 ,  F26B17/10 ,  C10L9/00 ,  C10L9/08

CPC classification number: C10L5/04 ,  C10L9/00 ,  C10L9/08 ,  C10L2290/06 ,  C10L2290/08 ,  C10L2290/60 ,  F26B3/08 ,  F26B3/092 ,  F26B3/0926 ,  F26B17/04 ,  F26B17/10 ,  F26B17/106 ,  F26B21/00 ,  F26B21/003 ,  F26B21/004

Abstract: In the sorting bed, the material to be sorted enters into the pulsating hot air drying stage, and is dried and upgraded under the effect of air flow and high-temperature hot air, the material enters into the pulsating cold wind sorting stage under the effect of scraper conveyors which are parallely arranged up and down inside. The light products and heavy products sorted and layered are respectively conveyed to fine coal and gangue discharging outlets at both ends of the sorting machine. The float and hypostasis at the corresponding discharging ends are respectively discharged by light product discharging wheel and heavy product discharging wheel. At the discharging ends, the material is removed from the sorted light material and heavy material and the medium is purified and recycled to use through subsequent process. The dry sorted air containing vapor and dust is purified and recycled through a subsequent dust removal process.

Abstract translation: 在分选床中，待分类的物料进入脉动热风干燥阶段，在空气流和高温热空气的作用下进行干燥和升级，材料进入脉动冷风分选阶段 刮板输送机上下平行布置。 分类和分层的轻质产品和重型产品分别输送到分选机两端的细煤和ang石出料口。 相应放电端的浮动和停滞分别由轻型产品排放轮和重型产品排放轮排放。 在排出端，从分选的轻质材料和重质材料中取出材料，并将介质纯化后再循环使用。 含有蒸汽和灰尘的干燥分选空气通过随后的除尘过程被纯化和再循环。