کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4990230 1456944 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of collector and depressant on monomineralic surfaces in fine wolframite flotation system
ترجمه فارسی عنوان
اثر کلکتور و افسردگی بر روی سطوح منومنالالیک در سیستم فلوتاکس خوب
کلمات کلیدی
انحلال سطح، مونومنالال، طیف سنجی فوتوالکترون اشعه ایکس، ولفرامیت، شناور
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی
Except wolframite monominerals, other monominerals, such as scheelite, fluorite, calcite, and quartz, exist in wolframite flotation. Therefore, it is necessary to investigate the floatability of main monominerals in wolframite flotation. This paper mainly investigated the effects of benzohydroxamic acid as a collector and sodium silicate as a depressant on different monominerals surfaces by X-ray photoelectron spectroscopy, including wolframite, scheelite, fluorite, calcite, quartz. The results indicated that the chemisorption of GYB followed by formation of five-membered ring chelate on wolframite and scheelite surfaces is responsible for inducing the floatability. A small number of GYB molecules stayed on fluorite surfaces by physical adsorption. GYB did not adsorb on calcite and quartz surfaces. SS did not adsorb on wolframite and scheelite surfaces. For fluorite and calcite, H2SiO3, HSiO3- and SiO32- can absorb on fluorite surface at low silicate concentrations and the depression was also achieved by ligand exchange between F and Si(OH)4. For quartz, H2SiO3, HSiO3- and SiO32- can absorb on quartz surfaces by supply of external pairs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 176, 4 April 2017, Pages 59-65
نویسندگان
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