Specific Energy Costs of Grinding Wood when Preparing a Composite for 3D-Printing
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2024, Vol 4, Issue 4
Abstract
The Northwestern Federal District is a region of Russia rich in a variety of wood species. The properties of wood in this region differ significantly from the properties of wood grown in other countries or in the eastern part of Russia, which leads to differences in energy costs of grinding wood. The aim of this research has been to estimate the specific energy costs of grinding wood to the state of wood flour, which will be used as the basis for wood polymer composite consumables in additive technologies. Wood flour has been obtained by grinding wood in a laboratory disk mill, repeatedly reducing the particle size. The granulometric composition has been analyzed for beech, oak, larch, alder and pine wood at 1, 3, 5 and 10 grinding cycles. Particle sizes have been determined by analyzing images obtained using an optical microscope and processed in the ImageJ graphic program. The specific energy costs of grinding have been estimated by recording the power with a wattmeter every second with repeated feeding of wood flour for the known mill productivity. When calculating the specific energy consumption, the moisture content of each wood species has been taken into account, as well as productivity losses associated with the adhesion of wood particles to the working surfaces of the dispersing set and the inner area of the disk mill body. The research has revealed a relationship between the specific energy costs and the particle size of wood flour obtained from various wood species. Regression analysis of curves corresponding to different wood species has made it possible to obtain exponential and power-law dependencies that do not contradict the fundamental theoretical laws of grinding solid particles. Based on these results, pine wood flour has been recognized as the most energy-efficient option. The established dependencies can be used to predict the specific energy consumption for grinding beech, oak, larch, alder and pine wood in disk mills.
Authors and Affiliations
Nikolay P. Midukov, Nikolay V. Evdokimov, Victor S. Kurov, Valerii V. Korshunov
Keywords
Related Articles
- EP ID EP742353
- DOI 10.37482/0536-1036-2024-4-159-176
- Views 64
- Downloads 1
Assessment of the Boron Treatability Level of Lesser-Known Timber Species by the Impregnation Method
Faced with the escalating crisis of global deforestation, including particularly alarming rates in Sri Lanka, researchers have turned their attention to the potential of boronbased preservatives for treating timber. The...
First Experience of Paulownia Bellissia® Cultivation in an Agroforestry System in the Czech Republic
Paulownia spp. comes from South-East Asia, where there is a tradition of its cultivation. Social pressure, in favour of the use of renewable sources of energy and sustainable agriculture, is on the rise. In this context,...
Improving the Technology of Reforestation in Cuttings with the Use of Energy-Efficient Tractors
Currently applied partial reforestation in cuttings and removal of stumps by uprooting have a number of significant technological, environmental and economic disadvantages. These are removal of the humus layer of soil ou...
Calorific Value of Pine Wood in Crops of the Northern Taiga Forest Area
Calorific value of plants is an important characteristic for evaluation of material cycles and energy conversion in forest ecosystems, as well as a qualitative characteristic of plant raw materials as fuel. Wood biofuel...
The Influence of the Stand Composition on the Cycle Time of the Harvester
A brief analysis of studies on logging equipment has allowed us to conclude that it is necessary to further study the degree of influence of silvicultural and taxation indicators of the stand, containing quantitative dat...