The Effect of Particle Size, Air Flow Rate and Oxygen Excess on Partial Roasting of Copper Concentrate

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khosrokiani, Elahe | 2016

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 49044 (07)
University: Sharif University of Technology
Department: Materials Science and Engineering
Advisor(s): Halali, Mohammad
Abstract:
In this study effect of air flow rate, particle size and oxygen excess on roasting of copper concentrate in a fluidized bed reactor were investigated. Copper concentrate in this work was from sarcheshme copper mine. For determination of the weight percentage of remaining sulfur, calcins were analyzed by XRD. The effect of air flow rate was studied at 211,250 and 312 lit/min. The results indicate that an increase in air flow rate led to a decrease in amount of sulfur in the calcin. For study the effect of oxygen excess roasting were done with 20,21 and 23 volume percent of oxygen and the results were the same as the effect of air flow rate. For study the effect of particle size, roasting were done with 300-500, 500-700 and 700-1000 particle size. The results show that quantity of sulfur in calcin decrease as the particles size decrease
Keywords:
Particles Size ; Flow Rate ; Fluidized Bed ; Roasting ; Copper ; Fluidized Bed Reactor

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