کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
212008 462029 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Recovery of rhenium from a molybdenite roaster fume as high purity ammonium perrhenate
ترجمه فارسی عنوان
احیاء رنیوم از یک مولیبدنیت به عنوان خلوص بالا آمونیم پروننت دود
کلمات کلیدی
رنیوم، آمونیوم پرناته، استخراج حلال، مشروبات الکلی، مولیبدنیت روستر دود
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Rhenium was selectively recovered from a fume produced by a Mo sulphide roaster.
• Scrubbing produced a strip liquor containing 260–280 mg/L Re and 80–90 mg/L Mo.
• The concentrated liquor produced from solvent extraction contains 29.9 g/L Re and 5.63 g/L Mo.
• Selective precipitation recovered > 85% available Re as 99.8% pure ammonium perrhenate.

Rhenium (Re) was recovered as high purity ammonium perrhenate (APR) from a scrub liquor produced by a pilot plant treating 2000 m3/h of a fume discharged from a molybdenite roaster. The hydrometallurgical process adopted incorporates first a neutralisation stage using lime to remove most of Mo, all Cu, As and other minor contaminants to produce a liquor containing 260–280 mg/L Re and 80–90 mg/L Mo. Solvent extraction was subsequently used to first load the Re and Mo into a 10 v/v.% tertiary amine (Alamine 304–1), 10 v/v.% Isodecanol in 80% Anysol-150. The organic phase which contained typically 6.2 g/L Re and 1.29 g/L Mo was stripped with 30% ammonium hydroxide to yield a liquor containing 29.9 g/L Re and 5.63 g/L Mo. High purity APR (> 99.8% purity) was recovered from this liquor by adding sulphuric acid to pH 6.8. The whole process would provide an efficient method to recover at least 85% of Re produced from the roaster, with some loss probably incurred due to the re-condensation and/or re-crystallisation of gaseous Re oxide in the cool part of the fume extraction circuit.

Process for recovering rhenium from molybdenite roaster fumes.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 156, July 2015, Pages 158–164
نویسندگان
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