The Analysis of The Process of Barley Grain Separation from Undesirable Particles

Abstract

The article focuses on the intensification of raw barley grains initial purification and separation processes before the subsequentprocessing in the area of brewing. Above all, it deals with the physical and mechanical concepts of the purification and separationof qualitatively satisfactory grains from undesirable impurities, e.g. coarse impurities, as the prevention from the potential damageof milling and scrapping facilities. Four different cultivated barley species were tested within the study. Physical and mechanicalparameters were determined in all samples, for instance powder density, angle of internal friction and external friction angle withsteel contact material, particle size distribution and morphology. The first results of measuring revealed the difference in the qualityof initial entering component of barley grains before the purification process compared to the output quality of grains after machinepurification and separation processes in the facilities determined for the subsequent grain storage. As a result of the non-effectiveprocess of separation, the final quality of the product, i.e. the beer, may be affected by the qualitative parameters of partial processesinvolved in treating barley grains.