EVALUATION OF THE POSSIBILITY OF USING THE BARK OF TREES GROWING IN THE REPUBLIC OF BELARUS FOR THE GRANULATION

UDC 674.812:674.836

  • Fedosenko Ivan Gavriilovich − PhD (Engineering), Assistant Professor, the Department of Woodworking Technology. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: Ivan.fedosenko@mail.ru

DOI: https://doi.org/10.52065/2519-402X-2021-246-36-284–289

Keywords: bark, granules, press, crumbling, density, ash content, moisture.

For citation: Fedosenko I. G. Evaluation of the possibility of using the bark of trees growing in the Republic of Belarus for the granulation. Proceedings of BSTU, issue 1, Forestry. Nature Management. Processing of Renewable Resources, 2021, no. 2 (246), pp. 284–289 (In Russian). DOI: https://doi.org/10.52065/2519-402X-2021-246-36-284–289.

Abstract

The aim of the study was to assess the possibility of obtaining granules from the bark of trees growing in the Republic of Belarus on granulating presses and to study their physical and mechanical characteristics.

Pine and birch were selected as the most abundant wood species. Granules with a diameter of 6 mm were made from the pre-crushed bark to a size of less than 5 mm and dried to 30%. After cooling at room conditions, the pellets were tested for compliance with ISO 17225-2 in terms of humidity, ash content, crumbling and fines content.

Tests have shown that the ash content of pellets from the bark of pine intended for mulching slightly exceeded the permissible by the standards, however, the birch bark, selected from the technological raw materials that was stored on a soil base, made it possible to obtain pellets with an ash content an order of magnitude higher than the normalized value. The crumbling of pine bark pellets is also somewhat higher than the standard for wood pellets.

Nevertheless, the bark of trees growing in the Republic of Belarus may well replace wood in the production of pellets. The data obtained indicate the need to develop regulatory documents for bark granules and a specialized technological process.

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