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In the present study collection rate constant (kc) was modeled as a function of the most significant operating variables which affect gas dispersion in a flotation column (i.e. superficial gas velocity, slurry density (solids\%) and frother dosage/type) using artificial neural network (ANN) and statistical techniques. Experiments were performed in an industrial flotation column (4 m in diameter and 12 m in height) in rougher circuit of a copper concentrator. RTD studies using a radioactive tracer have already conf...

Geographic Information Systems (GISs) are very useful tools for managing, checking, and organizing spatial information from many sources and of many types in thematic layers. One of the most important applications of geographical information system (GIS) is the site selection for various problems. The main purpose of this research is the selection of the best place for establishes the processing plant next to the one mineral deposit, which is located in Howe Hill in United Kingdom (UK), using of IDRISI software. T...