Investigation of flow dynamics of porous clinkers in a ball mill using technitium-99m as a radiotracer.
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A radiotracer investigation was carried out in a ball mill of a cement plant in Kenya. Residence time distribution (RTD) of raw feed to the mill was measured using Technetium-99m adsorbed on the clinkers as a radiotracer. From the measured RTDs, solid holdup and mean residence times (MRTs) in the ball mill and associated separator were determined. The measured RTDs were modelled using axial dispersion model (ADM) and tank-in-series model both connected with a plug flow component in series. The results of the modelling indicated significant degree of backmixing within the ball mill and no axial mixing in the separator.
CitationAppl Radiat Isot. 2019 Sep 22;154:108902
University of Nairobi
SubjectAxial dispersion model; Ball mill; Clinker; Mean residence time; Pozzolana; Radiotracer; Residence time distribution; Separator; Tank-in-series with backmixing model; Technetium-99m
RightsAttribution-NonCommercial-NoDerivs 3.0 United States
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