Briquetting Properties of Biomass Waste Materials
In this study, some briquetting properties such as moisture content, shatter index, compressive strength, water resistance, heating value, and combustion of briquettes from pulping reject and spruce wood sawdust were determined. The strongest briquettes (shatter index 20500, compressive strength 49.5 MPa) produced using spruce wood sawdust were achieved with a moisture content of 15% at a briquetting pressure of 350 MPa. The effect of the moisture content on the compressive strength and the shatter index of the briquette samples from pulping reject and spruce sawdust were studied. The results suggest that as the moisture content of the briquette samples increased significantly, the compressive strength and shatter index of the briquettes also increased.
Abstract The research of influence of biological factors on features of destruction of metal of pipes of main gas pipelines is conducted. It is established that the ferrito-perlitny structure of steel is rather steady as in the conditions of impact on it of biogenous factors under the exfoliated isolation, i.e. in aerobic conditions, and anaerobic.