Study of Particle Settling and Sedimentation in a Crucible Furnace [chapter]

Mark Badowski, Mertol Gökelma, Johannes Morscheiser, Thien Dang, Pierre Le Brun, Sebastian Tewes
2015 Light Metals 2015  
Galena particles (concentrate) were analyzed by sedimentation method using conventional technique, appropriate apparatus and reagents. A critical evaluation of the relationship between effective particle depth and a consortium of factorials; settling time and particle diameter was carried out using a derived model which is twofactorial-quadratic in nature. Results of the sedimentation analysis show increased effective depth reached by the particles as a result of decrease in the descending
more » ... the descending particle diameter, and increased settling time. The validity of derived model; β = 2 x 10 -5 γ 2 -5 x 10 -4 γ -1.5 x 10 -3 α + 0.2176 is rooted on the core expression β -1.5 x 10 -3 = 2 x 10 -5 γ 2 -5 x 10 -4 γ + 0.2176 where both sides of the expression are correspondingly approximately equal to 0.2. The model validity was verified through comparative evaluation of the settling rates from experimental and modelpredicted results. These settling rates are 0.002 and 0.0025 m/mins. respectively which are in proximate agreement. The standard error incurred in predicting the effective particle depth for each value of settling time & particle diameter considered as evaluated from experiment and derived model are 0.0018 and 0.0027 & 0.0005 and 0.0024 respectively. Maximum deviation of model-predicted results from experiment was less than 3%, implying a confidence applicability level of about 97%.
doi:10.1007/978-3-319-48248-4_162 fatcat:pvjsxa3th5c5jnpsyt3zme6klq