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بررسی قابلیت پرعیارسازی مولیبدنیت از کانه پلی متال مس ـ مولیبدن ـ سرب کال کافی | ||
| علوم و فنون سازندگی | ||
| دوره 6، شماره 1 - شماره پیاپی 18، مرداد 1404، صفحه 35-45 اصل مقاله (812.34 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| نویسندگان | ||
| مرتضی عبداللهی* 1؛ امیر زینالی2 | ||
| 1دانشجوی دکتری، دانشگاه صنعتی اصفهان، اصفهان، ایران | ||
| 2کارشناسی ارشد، گروه معدن دانشگاه تربیت مدرس تهران، تهران، ایران | ||
| تاریخ دریافت: 26 مهر 1403، تاریخ پذیرش: 26 شهریور 1404 | ||
| چکیده | ||
| کانسار مس ـ مولیبدن ـ سرب کال کافی ( شهرستان انارک -اصفهان) یکی از تودههای معدنی بزرگ و با ارزش زون متالوژیک انارک ـ یزد است. هدف از مقاله حاضر پرعیارسازی عنصر با ارزش مولیبدن از کانه کال کافی است. بر اساس آنالیزها و مطالعات کانیشناسی پیچیدگیها موجود در این کانه پلی متال، فرآوری آن را با چالشهایی مواجه خواهد کرد. در این تحقیق ابتدا با انجام آزمایشهای اولیه فلوتاسیون، امکانسنجی پرعیارسازی مولیبدنیت بررسی شد. در مرحله بعدی با طراحی آزمایشهای فلوتاسیون به روش تاگوچی، به تعیین نوع و غلظت مواد شیمیایی مناسب برای فلوتاسیون مولیبدنیت پرداخته شد. بر اساس نتایج، انجام فلوتاسیون در مرحله رافر با استفاده از مواد شیمیایی شامل g/ton 1000 گازوئیل، A70 به میزان g/ton 142، سولفور سدیم kg/ton 12 در pH تقریبا 11/5، نسبت غنی شدگی مولیبدن 5 بوده است. در ادامه آزمایشهای فلوتاسیون در مراحل کلینر و ریکلینر انجام گرفت، که طی این مراحل عیار مولیبدن به ترتیب 0/94 و 1/86 درصد بوده است. در طی این آزمایشها، پی به وجود مقادیر بالایی از سرب در کنسانتره مولیبدن برده شد. با طراحی آزمایش و انجام آزمایشهای فلوتاسیون در شرایط استفاده از مواد شیمیایی مختلف در دوزهای متفاوت، نتیجه گردید که دیکرومات سدیم نتیجه مطلوبی در بازداشت گالن داشته است؛ اما به احتمال قوی بخشی از ذرات مولیبدنیت درگیر با گالن را نیز بازداشت خواهد کرد. در حالت استفاده از دیکرومات سدیم عیار مولیبدن در کنسانتره 1/42 درصد اندازهگیری و بازیابی آن حدود 61 درصد محاسبه شده است. | ||
| کلیدواژهها | ||
| کانه های پلی متال؛ مولیبدنیت؛ فلوتاسیون؛ طراحی آزمایش؛ کال کافی | ||
| عنوان مقاله [English] | ||
| Investigating the ability of molybdenite enrichment from copper-molybdenum-lead polymetallic ore Kal Kafi | ||
| نویسندگان [English] | ||
| Morteza Abdollahi1؛ Amir Zeynali2 | ||
| 1PhD Student, Isfahan University of Technology, Isfahan, Iran | ||
| 2Master of Science, Department of Mining, Tarbiat Modares University of Tehran, Tehran, Iran | ||
| چکیده [English] | ||
| KalKafi copper-molybdenum-lead deposit ( Anark - Isfahan ) is one of the large and valuable mineral deposits in the Anark-Yazd metallurgical zone. The purpose of the present article is to enrich the valuable element molybdenum from the ore of KalKafi. Based on mineralogical analyzes and studies of the complexities in this polymetallic ore, its processing will face challenges. In this research, the feasibility of molybdenite enrichment was investigated by conducting preliminary flotation tests. In the next step, the type and concentration of suitable chemicals for molybdenite flotation were determined by designing flotation experiments using the Taguchi method. According to the results, flotation in the rafter stage was carried out using chemicals including 1000 g/ton of diesel, 142 g/ton of A70, 12 kg/ton of sodium sulfur at a pH of approximately 11.5, and the molybdenum enrichment ratio was 5. In the continuation, flotation tests were performed in the cleaner and re-cleaner stages, during which the molybdenum grade was 0.94% and 1.86%, respectively. During these tests, it was discovered that there are high amounts of lead in the molybdenum concentrate. By designing the experiment and conducting flotation tests in the conditions of using different chemicals in different doses, it was concluded that sodium dichromate had a favorable result in depressing galena; But it is highly likely that it will depressant part of the molybdenite particles involved with galena. In the case of using sodium dichromate, the molybdenum grade in the concentrate is 1.42% and its recovery is calculated to be about 61%. | ||
| کلیدواژهها [English] | ||
| Polymetallic ores, molybdenite, flotation, experimental design, Kal Kafi | ||
| مراجع | ||
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