A successful operational initiative in copper oxide flotation: Sequential sulphidisation-flotation technique

• Autorzy: Asadi Moharram , Soltani Faraz , Mohammadi Mohammad Reza Tavakoli , Khodadadi Darban Ahmad , Abdollahy Mahmoud

Identyfikatory

DOI

10.5277/ppmp18137

• Języki publikacji: EN

Abstrakty

EN

One of the main challenges in the copper oxide processing industry is implementation of a flotation method to reduce operating costs. Sulphidising flotation is the most common used technique in which a sulphidisation agent is used to sulphidise the surface of the oxide minerals. In this research, the mentioned technique was used sequentially for the concentration of silicate-carbonate ore containing 3.1% Cu (malachite). The presence of 39% Cu in -38 μm size fraction (fine particles) of feed led to poor grades and recoveries in the initial tests. The addition of sodium sulfide and subsequent flotation at three sequential stages was identified as a successful operational initiative to solve this problem in the following tests. The dosages of 1500, 1567 and 100 g/Mg of sodium silicate, sodium sulfide and potassium amyl xanthate, respectively, the conditioning time of 5 min for sulphidisation and pH=9.72 were chosen as optimum operational conditions using central composite design (CCD) method of experiments design. The rougher concentrate with 9.28% grade and 81.15% recovery was obtained under these conditions. The grade of obtained concentrate was reached to 24% in the cleaner step. The total recovery of both steps was over 74%.

Słowa kluczowe

EN

copper oxide; sulphidisation; flotation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2019
• Tom: Vol. 55, iss. 2
• Strony: 356--369
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Asadi Moharram

• Beneficiation and Hydrometallurgy Research Group, Mineral processing Research Center, Academic Center for Education, Culture and Research (ACECR) on TMU, Tehran, Iran

autor

Soltani Faraz

• Department of Mining Engineering, Arak University of Technology, Markazi, Iran

autor

Mohammadi Mohammad Reza Tavakoli

• Beneficiation and Hydrometallurgy Research Group, Mineral processing Research Center, Academic Center for Education, Culture and Research (ACECR) on TMU, Tehran, Iran

autor

Khodadadi Darban Ahmad

• Department of Mining Engineering, Tarbiat Modares University, Tehran, Iran

autor

Abdollahy Mahmoud

• Department of Mining Engineering, Tarbiat Modares University, Tehran, Iran

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).