The effect of grinding circuit efficiency on the grade and recovery of copper and molybdenum concentrates

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Bahrami, AtaallahDepartment of Mining Engineering, Faculty of Engineering – Urmia University, Urmia, Iran (författare)

The effect of grinding circuit efficiency on the grade and recovery of copper and molybdenum concentrates

Artikel/kapitelEngelska2022

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2022-09-06
Taylor & Francis Group,2022
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LIBRIS-ID:oai:DiVA.org:ltu-92832
https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-92832URI
https://doi.org/10.1080/15567036.2022.2120118DOI

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Språk:engelska
Sammanfattning på:engelska

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Validerad;2022;Nivå 2;2022-09-07 (joosat);Funder: Research copper – molybdenum processing complex of Sungun
The efficiency of grinding and flotation process in copper-molybdenum processing circuit, largely affected by performance of thickeners and hydrocyclones devices. The goal of this paper is to investigate the effect of the rate-limiting factors on the performance of these devices and consequently on grinding and separation efficiency of the molybdenum processing circuit. So, a full process mineralogical study have been carried out on outputs of thickeners and hydrocyclone of the molybdenite flotation circuit. According to the results, coarse-grained fractions (>50 μm) of the planar molybdenite will not necessarily be recovered by thickener and hydrocyclones. This is especially true for hydrocyclones when the inlet-load rate is high, i.e., the erroneous discharge of planar molybdenite particles from the overflow of hydrocyclone, as well as their floatability in the thickener overflow, can be attributed to the effect of particle shape and size. This issue harms the grade and recovery of flotation due to the increase in the amount of circulating load (regrinding) and consequently the generation of fine particles (<10 μm) in the hydrocyclone-milling circuit. On the other hand, the almost spherical particles of copper minerals, as well as the nonplanar molybdenite fine-grained particles, are easily removed from the hydrocyclone underflow or settled in thickeners. The introduction of copper mineral particles into molybdenum concentrate and vice versa has reduced the quality of the produced concentrate and undesirable flotation performance.

Ämnesord och genrebeteckningar

NATURVETENSKAP Geovetenskap och miljövetenskap Geologi hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences Geology hsv//eng
NATURVETENSKAP Geovetenskap och miljövetenskap Multidisciplinär geovetenskap hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences Geosciences, Multidisciplinary hsv//eng
Molybdenite processing circuit
thickener
hydrocyclone
process mineralogy
sungun copper complex
Mineral Processing
Mineralteknik

Biuppslag (personer, institutioner, konferenser, titlar ...)

Kazemi, FatemehMineral Processing, Faculty of Engineering – University of Kashan, Kashan, Iran (författare)
Abdollahi, MortezaMineral Processing, Faculty of Mining Engineering – Isfahan University of Technology, Isfahan, Iran (författare)
Mirmohammadi, MirSalehSchool of Mining Engineering, University of Tehran, Tehran, Tehran, Iran (författare)
Danesh, AbolfazlPhD student of Mineral processing, Faculty of Mining Engineering, Sahand University of Technology, Tabriz, Iran (författare)
Ghorbani, YousefLuleå tekniska universitet,Mineralteknik och metallurgi(Swepub:ltu)yougho (författare)
Department of Mining Engineering, Faculty of Engineering – Urmia University, Urmia, IranMineral Processing, Faculty of Engineering – University of Kashan, Kashan, Iran (creator_code:org_t)

Sammanhörande titlar

Ingår i:Energy Sources, Part A: Taylor & Francis Group44:3, s. 8121-81341556-70361556-7230

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Av författaren/redakt...: Bahrami, Ataalla ...; Kazemi, Fatemeh; Abdollahi, Morte ...; Mirmohammadi, Mi ...; Danesh, Abolfazl; Ghorbani, Yousef

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NATURVETENSKAP: NATURVETENSKAP; och Geovetenskap och ...; och Geologi

NATURVETENSKAP: NATURVETENSKAP; och Geovetenskap och ...; och Multidisciplinär ...

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Av lärosätet: Luleå tekniska universitet

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