Properties of pellets made of agglomerated pine and spruce sawdust with theaddition of wheat bran

Abstract

The effect of the addition of 10%, 15% and 20% wheat bran to pine and spruce sawdust on the kineticstrength, bulk density and specific density of the conglomerate pellet was determined. It turned out that with anincreasing proportion of wheat bran in the sawdust mixture, there was a gradual increase in specific densitycompared to that of pellets agglomerated from wood sawdust alone. At a 20 per cent share of wheat bran, therewas a 7 per cent increase in the kinetic strength of pellets obtained from both types of sawdust. Slight fluctuationsin the bulk density of the pellets occurred with a change in the proportion of wheat bran. The share of wheat branranging from 10% to 20% in the absolutely dry sawdust mixture did not decrease the calorific value. The significantdecrease in calorific value of 13% was mainly due to the increase in moisture content to 12% of the sawdust-wheatbran mixture.