Open AccessCharacteristics of Binderless Briquettes for Indonesian Low-Rank Coals
Author(s) -
Dong Hyuk Chun,
Young Joon Rhim,
Sang Do Kim,
Jiho Yoo,
Ho Kyung Choi,
Jeong Hwan Lim,
Sihyun Lee
Publication year - 2015
Publication title -
korean chemical engineering research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.168
H-Index - 9
eISSN - 2233-9558
pISSN - 0304-128X
DOI - 10.9713/kcer.2015.53.2.231
Subject(s) - briquette , coal , moisture , pulp and paper industry , hydraulic press , particle size , materials science , environmental science , water content , waste management , composite material , engineering , mechanical engineering , geotechnical engineering , chemical engineering
− The characteristics of binderless briquettes for dried low-rank coal was studied in this work. Two kinds of Indonesian coals were used to briquette after drying them in electric oven. The characteristics of briquettes have been examined by moisture contents, particle size, hydraulic force, and storing period. The optimum moisture contents of briquettes were observed at between 10 wt% and 15 wt%. The strength of coal briquette was stronger as particle size became smaller. The strength of coal briquette was proportional to the hydraulic force under 300 kN, whereas there was little difference among the briquettes made at more than 300 kN of hydraulic force. The strength of briquettes sharply decreased for a week after produced, and then showed the tendency of converging. The results from this work can be a useful guideline of manufacturing and managing upgraded coal briquettes.
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