تعیین پارامترهای موثر بر فلوتاسیون کانسنگ مس اسلام آباد طارم برای افزایش بازیابی مس

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی معدن، دانشگاه صنعتی امیرکبیر (پلی تکنیک تهران)، تهران، ایران.

2 کارشناسی ارشد فرآوری مواد معدنی، دانشگاه تربیت مدرس، تهران، ایران.

چکیده

در این پژوهش، برای تهیه نمونه معرف از محدوده اسلام آباد واقع در شهرستان طارم، از نمونه‌های مغزه‌های برش خورده حفاری اکتشافی استفاده شد، سپس مطالعات شناسایی نمونه معرف انجام شد. بر اساس مطالعات پتروگرافی و مینرالوگرافی، کانی‌های اصلی نمونه شامل پیریت، کالکوپیریت، تنانتیت، تتراهدریت می‌باشد. براساس آنالیز XRD، نمونه عمدتا از کانی‌های کوارتز، دولومیت، آلبیت، موسکویت-ایلیت، کلسیت، پتاسیم فلدسپات، کائولینیت، پیریت تشکیل شده است. نتایج آنالیز AAS نشان داد که عیار مس و طلا، به ترتیب 0/3 درصد و ppb 368 است. در مطالعات میکروسکوپ الکترونی روبشی، هیچ‌‌گونه طلای آزاد مشاهده نشد و طلا عمدتا به صورت جایگزینی در شبکه کانی‌های گالن، کالکوپیریت و پیریت حضور دارد. بر اساس مطالعات درجه آزادی، درجه آزادی کالکوپیریت در دانه‌بندی µ63 = 80d، حدوداً 97/03 درصد است. به منظور فلوتاسیون کالکوپیریت، پارامترهای موثر مانند pH، غلظت کلکتور، نوع و غلظت کفساز و غلظت بازداشت کننده بررسی شد. نتایج نشان داد که در شرایط بهینه، 8/8=pH، غلظت 150 گرم بر تن، ترکیب دو کلکتور سدیم ایزوپروپیل گزنتات و پتاسیم آمیل گزنتات به نسبت وزنی یکسان 50 درصد، غلظت 40 گرم بر تن از ترکیب دو کفساز پلی پروپیلن گلیکول و متیل ایزوبوتیل کربونیل به نسبت وزنی یکسان 50 درصد و غلظت 60 گرم بر تن سیلیکات سدیم به عنوان بازداشت کننده، عیار و بازیابی مس به ترتیب 12/2 و 82 درصد بدست آمد که با یک مرحله شستشوی مجدد بر روی کنسانتره بدست آمده، کنسانتره‌ای با عیار و بازیابی مس به ترتیب 18/48 و 80/05 درصد حاصل شد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Determining Effective Parameters on Flotation of Islamabad-Tarom Copper Ore to Increase Copper Recovery

نویسندگان [English]

  • Arash Sobouti 1
  • Amir Zeynali 2
  • bahram rezai 1
  • Hossein Kamran Haghighi 1
1 Department of Mining Engineering, Amirkabir University of Technology, Iran, Tehran
2 Faculty of Engineering, Tarbiat Modares University, Tehran, Iran
چکیده [English]

In this study, samples of cut cores from exploratory drilling were used to prepare a representative sample from the Islamabad area located in Tarom, then identification studies were conducted. Based on petrographic and mineralographic studies, the main minerals in the sample include pyrite, chalcopyrite, tennantite, and tetrahedrite. Based on XRD analysis, the sample mainly consists of the minerals quartz, dolomite, albite, muscovite-illite, calcite, potassium feldspar, kaolinite, and pyrite. AAS analysis results indicated that the copper and gold grades are 0.3% and 368 ppb, respectively. In scanning electron microscope studies, no free gold was observed; instead, gold is primarily present as a replacement in the lattice of the minerals galena, chalcopyrite, and pyrite. Based on liberation studies, the liberation degree of chalcopyrite at a particle size of d80 = 63µ is approximately 97.03%. For chalcopyrite flotation, effective parameters such as pH, collector concentration, type and concentration of frother, and concentration of depressant were examined. The results showed that under optimal conditions, pH 8.8, collector concentration of 150 g/t, a mixture of sodium isopropyl xanthate and potassium amyl xanthate in equal weight ratio (50%), a frother concentration of 40 g/t using a mixture of polypropylene glycol and methyl isobutyl carbinol in equal weight ratio (50%), and a depressant concentration of 60 g/t of sodium silicate, the copper grade and recovery were 12.2% and 82%, respectively. With a re-cleaner step on the obtained concentrate, a concentrate with a grade and copper recovery of 18.48% and 80.05% was obtained, respectively.

کلیدواژه‌ها [English]

  • Flotation
  • Chalcopyrite
  • Copper
  • Gold
  • Effective Parameters

مراجع

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نشریه مهندسی عمران امیرکبیر
دوره 57، شماره 4
1404
صفحه 633-652

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