With FEM the prediction of flow rates on the “drive in” filters is much better. The velocity of flow has to be carefully controlled, not to overpass that two criteria used for calculation. Based on the working experience from Velenje coal mine, from a few tests of “drive in” filters installations, it can be said that the model results are in the accordance with the reality. So, it can be concluded that the planned dewatering program has sense only if a special measure of activation will be used, and if the time to switch from one longwall face to another will be short enough.
COBISS.SI-ID: 948575
Numerous studies in the past attempted to characterize bulk solids. However, some characteristics of bulk solids still remain insufficiently understood. This paper presents some interesting results about the influence of the particle size distribution. Since characterization of bulk solids goes beyond determining the above mentioned properties, a novel attritor which was designed and used in our laboratory as a significant part of a new method for determining the influence of particle shape on the unconfined yield strength of a bulk solid, is presented.
COBISS.SI-ID: 11055643