Processing of Alborz Markazi coal tailings using column flotation
محل انتشار: مجله معدن و محیط زیست، دوره: 2، شماره: 1
سال انتشار: 1390
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 493
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شناسه ملی سند علمی:
JR_JMAE-2-1_006
تاریخ نمایه سازی: 13 مرداد 1394
چکیده مقاله:
Investigations were carried out on coal tailings by conventional cell and column flotation techniques. Tests were conducted to assess processing coal tailings of Alborz Markazi coal washing plant in Iran by column flotation. The effects of reagent type/dosage were investigated with conventional flotation and their results were used in the performance of column flotation. Also the effects of the air rate, the feeding rate, the wash water rate, the frother concentration, the collector dosage were evaluated with column flotation. These coal tailings have an average of 56% ash. This paper used factorial design to optimize grade and recovery of coal tailings. The column flotation results indicated concentrate produced under optimum conditions, kerosene, 2909 g/t; superficial air velocity, 0.96 cm/s; feeding rate, 3.6 lit/min; superficial wash water velocity, 0.98 lit/min; frother dosage, 350 g/t having an ash content of 12.11% and a combustible recovery of 28.51% was obtained.
کلیدواژه ها:
نویسندگان
Z Bahri
Faculty of Mining, Petroleum and Geophysics, Shahrood University of Technology; Shahrood, Iran
S.Z Shafaei
Faculty of Mining, Petroleum and Geophysics, Shahrood University of Technology; Shahrood, Iran/Professor, School of Mining, College of Engineering, University of Tehran, Tehran, Iran
M Karamoozian
Professor, School of Mining, College of Engineering, University of Tehran, Tehran, Iran