Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(5), 1453-1458 | DOI: 10.11118/actaun201664051453

The Effect of Moisture of the Raw Material on the Properties Briquettes for Energy Use

Milan Brožek
Department of Material Science and Manufacturing Technology, Faculty of Engineering, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Praha 6 - Suchdol, Czech Republic

At logging and at the subsequent wood and wood semi-products treatment the fine grained loose waste is arising, e.g. wood dust, saw dust, shavings, chips, bark etc. One of possibilities of its meaningful utilization is the briquetting technology, which product are briquettes determined for energetic utilization (combustion). This report contains the results of tests carried out with the aim to assess the influence of moisture on the briquettes final properties. For the tests the platan tree chips of four moisture levels, namely 5.7 %, 7.7 %, 15.7 % and 23.9 % were used. The basic physical-mechanical properties were the evaluation criteria. Following properties were determined: ash amount, gross calorific value, total moisture content, density, rupture force, length, diameter, weight and mechanical durability. From the results of carried out tests it follows that the best properties were reached at briquettes made from chips of moisture 7.7 %. At higher or lower moisture the briquettes properties were sharply failing (namely rupture force and density).

Keywords: wood, wood moisture, briquetting, density, rupture force, mechanical durability
Grants and funding:

The research has been supported by the project "Influence of feedstock specific mechanical parameters and type of storage conditions on final quality of briquettes from waste biomass", financed by IGA, Faculty of Engineering, CULS Prague, 2016: Nr. 31140/1312/3107.

Prepublished online: October 30, 2016; Published: November 1, 2016  Show citation

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Brožek, M. (2016). The Effect of Moisture of the Raw Material on the Properties Briquettes for Energy Use. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 64(5), 1453-1458. doi: 10.11118/actaun201664051453
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