Study on improvement of performance of heavy medium cyclone using viscosity improvement technology

In order to improve the performance of the heavy medium cyclone,an analysis is made on the effect of viscosity of suspension on heavy medium cyclone separation performance and the mechanisms involved. On the basis of the analysis made,industrial test is conducted on the suspension viscosity improvement technology at the coal washery under Tangshan Mining Branch Co.,with the plant’s east washing system as the testing point and the west washing system as a reference point. Result of test indicates that in terms of content of misplaced material at the equal errors density point（ or the practical separating density point）,the figure at the east washing system is 0. 70% far less than the figure of 1. 02% at the west system.. With the conditions being equal（ same coal feed and same ash of clean coal）,the yield of clean coal of the east washing system is 0. 74 percentage points higher than that of the west washing system,with a rise of total yield of clean coal by 0. 59 percentage point.