2014-Sustainable Industrial Processing Summit
SIPS 2014 Volume 2: Mineral Processing
| Editors: | Kongoli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2014 |
| Pages: | 446 pages |
| ISBN: | 978-1-987820-04-1 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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SIMULATION OF MINERAL FLOW IN SILOS USING BLENDER
Andre Carlos Silva1; Elenice Maria Schons Silva1; Frederico Reis1;1UNIVERSIDADE FEDERAL DE GOIAS, Catalao, Brazil;
Type of Paper: Regular
Id Paper: 79
Topic: 2
Abstract:
The grains handling always need a storage form that prevents the loss of materials and takes easy the following operations, which are often in form of silos or stoke piles. This presents some disadvantages, like the environmental exposure and the difficulty in feeding downstream operations.
The silos keep the particles in a closed volume and direct the flow to an orifice during the unloading, so it has been a very efficient alternative in the use of fines and for subsequent handling. However, the knowledge about the properties of the particles like density, size, angle of friction and attrition are absolutely important, because in combination with the silo geometry and the amount of grains, tensions arcs in the discharge can be cause, preventing the flow.
The present work was developed to find relationships between the flow time and these variables. The orifice width, hopper inclination and height were restricted in relation to the equipment geometry. For this, we used the modeling and simulation 3D software Blender, version 2.68, created by Blender Foundation with free access and the methodology based on Computer Fluid Dynamics (CFD) tools. In the simulations, it was noticed the importance of the particles flowability in the flow time, which is conditioned, mainly, by the grains size and angle of flow. The humidity as well as time the granular package was in the bin before being discharged were despised, but they can influence in the flow time.