JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Effect of the Heat Treatment Temperature on the Compressive Strength of Coal Powder Compacts
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
  • Journal title : Carbon letters
  • Volume 13, Issue 3,  2012, pp.151-156
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2012.13.3.151
 Title & Authors
Effect of the Heat Treatment Temperature on the Compressive Strength of Coal Powder Compacts
Seo, Seung-Kuk; Roh, Jae-Seung;
  PDF(new window)
 Abstract
This study considered the effect of the heat treatment temperature on the compressive strength of coal powder compacts affected by density, porosity, and crystallinity. Coal powder compacts were made by pressing of milled coal powder and were heat treated at 200, 400, 600, 800, and . The density and porosity of the heat treated specimens at each temperature were measured using the Archimedes method and changes in crystallinity were analyzed using Raman spectroscopy. Increases in compressive strength at or higher temperatures were proportionally related to increases in the density and the degree of crystallinity.
 Keywords
coal powder compacts;heat treatment;compressive strength;density and porosity;crystallinity;
 Language
English
 Cited by
 References
1.
Mochida I, Sunami Y. Carbonization of coal and coking mechanism. Tetsu-to-Hagane, 71, 1589 (1985).

2.
Chan ML, Jones JM, Pourkashanian M, Williams A. The oxidative reactivity of coal chars in relation to their structure. Fuel, 78, 1539 (1999). http://dx.doi.org/10.1016/s0016-2361(99)00074-5. crossref(new window)

3.
Pitt GJ, Rumsey JCV. Some features of the structure of metallurgical cokes and their effects on strength. J Phys D: Appl Phys, 13, 969 (1980). http://dx.doi.org/10.1088/0022-3727/13/6/008. crossref(new window)

4.
Nishioka K, Yoshida S. Strength estimation of coke as porous material. Trans Iron Steel Inst Jpn, 23, 387 (1983). http://dx.doi. org/10.2355/isijinternational1966.23.387. crossref(new window)

5.
Patrick JW, Sims MJ, Stacey AE. The relation between the strength and structure of metallurgical coke. J Phys D: Appl Phys, 13, 937 (1980). http://dx.doi.org/10.1088/0022-3727/13/6/006. crossref(new window)

6.
Hartwell RR, Stacey AE, Wilkinson HC. Effect of low-volatile additives on the structure and strength of cokes. Fuel, 61, 329 (1982). http://dx.doi.org/10.1016/0016-2361(82)90046-1. crossref(new window)

7.
Seo SK, Roh JS, Kim ES, Chi SH, Kim SH, Lee SW. Thermal emissivity of a nuclear graphite as a function of its oxidation degree (2) - Effect of surface structural changes. Carbon Lett, 10, 300 (2009). crossref(new window)

8.
Hirai T, Compan J, Niwase K, Linke J. Laser Raman microprobe analysis of graphite exposed to edge plasma in the TEXTOR tokamak. J Nucl Mater, 373, 119 (2008). http://dx.doi.org/10.1016/j. jnucmat.2007.05.040. crossref(new window)

9.
Yoon KH, Kim KH, Lee YK. The effect of end temperature on coke qualities. Hwahak Konghak, 38, 889 (2000).

10.
Kim JM, Chung JK, Kim SM, Heo WW, Kim HS. Application of quantitative X-ray diffraction analysis for unburned coal content on coke-char-sinter mixtures. J Korean Ceram Soc, 40, 481 (2003). crossref(new window)

11.
Sharma A, Kyotani T, Tomita A. Quantitative evaluation of structural transformations in raw coals on heat-treatment using HRTEM technique. Fuel, 80, 1467 (2001). http://dx.doi.org/10.1016/s0016- 2361(01)00018-7. crossref(new window)