• removal of ultrafine iron impurities from clay in designed experiments by taghuchi method

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1389/07/20
    • تاریخ انتشار در تی پی بین: 1389/07/20
    • تعداد بازدید: 666
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     in this paper separation of iron minerals which most of them was limonite and hematite from clay of mehran mine was performed to produce a concentrate with acceptable fe2o3 grade for applying in ceramics industries and sufficient recovery. regarding mineralogy investigations, the iron minerals in the sample were in the form of coating and crack filler and were liberated in very fine sizes (less than 20 microns). the applied iron removal process included high shear agitation in presence of sodium oleat that leads to flocculation flowed by high gradient magnetic separation. this process was chosen because of very fine particle size and low magnetic susceptibility of the iron minerals presented in the sample. effects of variations include time of agitation, collector concentration, ph, pulp density in flocculation and magnetic field intensity on fe2o3 grade and recovery of concentrate was investigated. in this work experiments were designed by taghuchi method and results were analyzed with statistic methods by dx7 software. besides preparing models, optimum conditions for reaching sufficient grade and recovery were determined by the software. the raw ore contained more than 10% fe2o3. by this process concentrate with 4% fe2o3 content and recovery of 87% was produced in one step.

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