公开(公告)号：WO2018212824A1

公开(公告)日：2018-11-22

申请号：PCT/US2018/021654

申请日：2018-03-09

Applicant: EARTH TECHNOLOGIES USA LIMITED

Inventor： SWENSEN, James S. ,  HODSON, Jonathan K. ,  GRITT, John G. ,  CHAPMAN, Nathan A. ,  SAMARIO, Paul R. ,  HODSON, Michael R. ,  HODSON, Simon K.

IPC: C10L5/22 ,  B01J2/00 ,  B01J2/28 ,  C10L5/00 ,  C10L5/02 ,  C10L5/06 ,  C10L5/10

Abstract: A method of preparing agglomerates of ultra-fine coal particles includes mixing a film forming agglomeration aid (FFAA) with a quantity of ultra-fine coal particles to form ultra-fine coal particles coated with the FFAA. The FFAA has a lower surface energy relative to a surface of the ultra-fine coal particles. The FFAA is mixed with the ultra-fine coal particles in an amount less than 3% by weight of the ultra-fine coal particles on a dry basis. Agglomerates of the ultra-fine coal particles coated with the film forming agglomeration aid are formed using vibration, pelleting, and/or briquetting. The agglomerates have a size of at least 2 mm. The ultra-fine coal particles have a particle size less than 100 µm. The agglomerate has a tumbler test friability less than 3%. The drop shatter friability is also less than 3%.