An Investigation of the Effect of Operating Variables on Separation Performance of Teetered Bed Separator

Abstract

The aim of this study is to investigate the effect of operating variables on separation performance of Teetered Bed Separator TBS used in fine coal beneficiation. For this purpose, experimental studies were performed by using laboratory and pilot scale teetered bed separator (Crossflow® separator, Eriez). Tests with calcite were performed using laboratory scale TBS to evaluate size separation performance without interfering density effects. Then, using a pilot scale TBS unit, tests were performed in both Dereköy Washing Plant and Ömerler Washing Plant. A leak from a spiral concentrator feed was used in both plants. Effects of pressure set point and teetered water flowrate were studied in size by size basis. Tests with single density material, showed that the teetered water has the larger effect on separation size. Increasing teetered water, increases superficial velocity at the separation zone, hence the coarser particles to report to overflow.