Potential of composite fuel application based on low-grade coal and wastes of forest and flour industry

Abstract

Composite fuels based on low-grade brown coal of 3B-grade mixed with forest and flour industry wastes were studied. Three compositions with similar weight content of forest industry waste and low-grade coal as well as flour industry waste in concentration range from 0 to 15 wt. %. The chemical properties and ignition characteristics of samples were studied by means of TG-analysis at air medium and 10 K/min heating rate in temperature range 50-600 °C. The samples with 15 wt. % content of flour waste were found to have higher burnout degree (up to 21.17 %) and mechanical endurance while having lower heating value (up to 6 %) and higher ignition temperatures (up to 24 °C) compared to samples with no flour industry wastes.