Optimum Design of Hammer Mill for Grinding Leonardite

Authors

  • Surapin Promdan Rajamangala University of Technology Lanna, Chiang Mai, Thailand
  • Nuttarut Panananda Rajamangala University of Technology Lanna, Chiang Mai, Thailand
  • Ronnachart Munsin Rajamangala University of Technology Lanna, Chiang Mai, Thailand
  • Suphamat Chaichana Rajamangala University of Technology Lanna, Chiang Mai, Thailand
  • Pracha Yeunyongkul Rajamangala University of Technology Lanna, Chiang Mai, Thailand
  • Supol Khrabunma Limited Partnership Mae Moh, Mining Engineering, Mae Moh District, Lampang,Thailand

Corressponding author's email:

surapin_me@rmutl.ac.th

DOI:

https://doi.org/10.54644/jte.74.2023.1335

Keywords:

Hammer Mill, Grinding Efficiency, Leonardite, Design and construction, Analysis

Abstract

The objective of this research is to design and construct a hammer mill for grinding leonardite charcoal (Lignite, class J). The conditions for the design and construction of the grinder are hammer thickness, 3, 6, and 9 mm, a number, hammer 20, 24, and 28. The size of the ground leonardite should range between 250 mm to 30 mm (less than 0.066 mm). The hammer thickness and number of hammers were chosen alternatingly in order to see the effect of these two parameters. By manipulating these two parameters, it was found that the optimum operation can be achieved by using 28 hammers having a thickness of 3 mm. It results in the highest grinding efficiency of 96.2 percent. Percentages of the grate (retained) and passed of the ground mineral are found for each sieve size by means of weight. The approximations of the retained and passed were calculated and found to intersect at 225 mm. At the intersection, the percentage by weight passed through the sieve is 50 percent and the percentage by weight retained sieve is 50 percent, respectively.

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Author Biographies

Surapin Promdan, Rajamangala University of Technology Lanna, Chiang Mai, Thailand

Surapin Promdan received his M.Eng. in Mechanical Engineering from Chiang Mai University in 2007. He is currently an assistant professor lecturer at Rajamangala University of Technology Lanna (RMUTL). His research interests include are in mechanical desi

Nuttarut Panananda, Rajamangala University of Technology Lanna, Chiang Mai, Thailand

Nuttarut Panananda is working at Rajamangala University of Technology Lanna (RMUTL) from 1999. His academic background is in the field of Mechanical Engineering. He received his Ph.D. in Sound and Vibration from Institute of Sound and Vibration Research (ISVR), University of Southampton, UK, in 2013. Research topics he interested in are about dynamic systems especially mechanical vibration.

Ronnachart Munsin, Rajamangala University of Technology Lanna, Chiang Mai, Thailand

Ronnachart Munsin is working at Rajamangala University of Technology Lanna (RMUTL) from 2015. He worked as a postdoctoral fellow at the Université d' Orléans, France in 2016. He received his D.Eng. in mechanical engineering from King Mongkut’s University of Technology Thonburi (KMUTT) in 2015, M.Eng. in mechanical engineering from Chiang Mai University in 2009 and B.Eng. in agricultural engineering from Maejo University in 2004. He was an intern at Tokyo Institute of Technology for research work in 2011. His research focus on sustainable technology, agricultural engineering and combustion.

His awards and honors include the Research Fellowship from the Labex CAPRYSSES, supported by the National French Agency, the Research Fellowship from the National Research Council of Thailand, the Royal Golden Jubilee Ph.D. Program, the Fellowship from the JSAE Kanto and the DIPROM Agro-Machinery Award 2022.

Suphamat Chaichana, Rajamangala University of Technology Lanna, Chiang Mai, Thailand

Suphamat Chaichana received M.Eng. in Mining and Georesources Engineering from Chiang Mai University in 2022. She is currently a lecturer at Rajamangala University of Technology Lanna (RMUTL). Her research focuses on rock mass physical and mechanical properties, slope stability for mining design, and mineral economics.

Pracha Yeunyongkul, Rajamangala University of Technology Lanna, Chiang Mai, Thailand

Pracha Yeunyongkul received his D.Eng. in Mechanical engineering from Chiang Mai University in 2012. He is currently an associate professor at Rajamangala University of Technology Lanna (RMUTL). His research interests include application of heat pipe, heat exchanger design and geopolymer

Supol Khrabunma, Limited Partnership Mae Moh, Mining Engineering, Mae Moh District, Lampang,Thailand

Supol Khrabunma CEO Limited Partnership Mae Moh Mining Engineering, operates in the areas of rock blasting contractor, rock crushing, excavation, transportation of soil, rock, ore, surveying, mine design and planning. of the Electricity Generating Authority of Thailand (Mae Moh Mine), Lampang Province

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Published

16-01-2023

How to Cite

[1]
S. . Promdan, N. . Panananda, R. . Munsin, S. Chaichana, P. . Yeunyongkul, and S. . Khrabunma, “Optimum Design of Hammer Mill for Grinding Leonardite”, JTE, vol. 18, no. Special Issue 01, pp. 41–55, Jan. 2023.

Issue

Vol. 18 No. Special Issue 01 (2023)

Section

Research Article

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