کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
6672635 1427596 2018 6 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Flotation studies of monazite and dolomite
ترجمه فارسی عنوان
مطالعات شناور مونازیت و دولومیت
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کلمات کلیدی
عناصر نادر زمین مواد معدنی زمین نادر، شناور پتانسیل زتا، مونازیت، دولومیت، اسید بنزو هیدروکسام، سدیم لوئیت، اسید فسفریک ارگانیک، اسید فسفریک استر،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Rare earth elements (REE) are key components of many emerging green technologies. This leads to an increase in demand for REE, hence to the development of new deposits, such as the Niobec carbonatite rare earth deposit in Quebec, Canada. One of the valuable minerals in this deposit is monazite, one of the primary sources of REE. Although there has already been previous research investigating monazite flotation, most of these are focused on monazite from heavy mineral deposits. Since minerals from different deposits may behave differently, it is important to investigate the flotation behavior of monazite from carbonatites as well. This work investigates the surface properties of monazite from carbonatite deposit through zeta potential analyses. Electrophoretic zeta potential measurements were conducted to identify the interaction of monazite and dolomite, a gangue mineral commonly associated with carbonatites, with different collectors (namely sodium oleate, organic phosphoric acid and benzohydroxamic acid). Floatability of the minerals were analyzed through microflotation tests, to obtain the potential conditions for effective separation. Zeta potential measurements of monazite and dolomite showed that the isoelectric point (IEP) for both minerals occur at a pH of approximately 5. Sodium oleate, benzohydroxamic acid and Flotinor 1682 (organic phosphoric acid) have been shown to adsorb on to monazite at pH 7. The results suggest that benzohydroxamic acid can be selective at neutral pH condition, sodium oleate can be potentially used in reverse flotation of monazite in acidic condition and Flotinor 1682 (organic phosphoric acid) can be a potential collector for monazite. However, the use of reagents such as activators and depressants is suggested to achieve a more selective separation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Minerals Engineering - Volume 116, 15 January 2018, Pages 101-106
نویسندگان
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