SciELO - Scientific Electronic Library Online

 
vol.118 issue1Fatigue risk management: Charting a path to a safer workplace author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • On index processSimilars in Google

Share


Journal of the Southern African Institute of Mining and Metallurgy

On-line version ISSN 2411-9717
Print version ISSN 2225-6253

Abstract

LEOKAOKE, N.T. et al. Manufacturing and testing of briquettes from inertinite-rich low-grade coal fines using various binders. J. S. Afr. Inst. Min. Metall. [online]. 2018, vol.118, n.1, pp.83-88. ISSN 2411-9717.  http://dx.doi.org/10.17159/2411-9717/2018/v118n1a10.

Inertinite-rich, low-grade coal was used with 12 binders: clays (attapulgite and bentonite), biochar, cow dung, crystallized medium-tar pitch, coal tar sludge, flocculant, fly ash, lignosulphonates, polyester resin, and two South African coal tar pitches in order to produce mechanically strong and water-resistant briquettes. The binders were added in concentrations of 2.5, 5, 7.5, and 10 mass%, and the compressive strength, cohesiveness, and water resistance of the resultant briquettes were determined. The briquettes manufactured using lignosulphonate and resin as binders were the strongest, with compressive strengths of 16 and 12 MPa respectively at a 7.5 mass% binder. Cured and uncured, with and without binder addition, the briquettes all retained their shape and size during drop tests, but none proved to be water-resistant. Paraffin and wax were therefore used as waterproofing agents after pressing and curing. These briquettes showed sufficient strength, cohesiveness, and water resistance to be considered for industrial application.

Keywords : agglomeration; binders; coal fines; compressive strength; inertinite; waterproofing.

        · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License