Flow property measurement using the Jenike shear cell for 7 different bulk solids
Advancing the chemical engineering fundamentals
Particulate Systems (T2-3P)
Keywords: Shear testing, yield locus, Jenike shear tester, flow properties, flow function
It is essential to understand the effect of material characteristics such as size and moisture content on the flow of bulk solids. In this study, instantaneous flow properties (cohesion, angle of internal friction) of 3 different sand samples (Yalıköy, Safaalanı and yellow), soda, limestone, dolomite and clay were measured at intrinsic moisture contents by using Jenike shear tester. Additional tests were also performed for low and high moisture contents of Yalıköy sand. Flowability of solids which is characterized by flow function (or flow index) was investigated for studied materials and a classification was made.
It has been found that cohesion values increase with increasing normal stress values and high moisture content and small particle size also increase the cohesion values. Beside, there is not significant difference between the angle of internal friction values at different stress levels. The material which has the hardest flow is clay and soda has the easiest flow among the studied materials. While clay and soda have been classified as cohesive and free flowing material, all other materials have been found in easy flowing material class. It can be said that high moisture content and small particle size has an adverse effect on the flow. While the flow of Yalıköy sand at low moisture content has been easier than its intrinsic moisture content, a more difficult flow hasn’t been obtained at high moisture content as expected.
See the full pdf manuscript of the abstract.
Presented Monday 17, 13:30 to 15:00, in session Particulate Systems (T2-3P).
