Characterization of dusts from cement plants with respect to parameters relevant for storage and transport
C. Lanzerstorfer - Characterization of dusts from cement plants with respect to parameters relevant for storage and transport - ADVANCES IN CEMENT RESEARCH, Vol. 28, No. 5, 2016, pp. 328-335
In cement plants large amounts of dust are generated which have to be separated from various off-gases before discharge. For the design and operation of the dust separation process and handling and storage facilities the physical and flow properties of these dusts are significant. In this study five cement kiln dusts (CKDs) and three dusts from other sources in cement production were investigated. Shear tests showed that the flowability of most dust is very poor. Furthermore, the flowability depends on the consolidation stress: the higher the consolidation stress, the better the flowability. Three flowability indicators the angle of repose, the Hausner ratio and Carr´s compressibility were also determined. However, these indicators produced very inconsistent results. In most cases, the flowability of the dust was over-estimated. Therefore, shear tests are strongly recommended for reliable categorization of the flowability of dusts from cement plants.