Dissolution of MoS2 concentrate using NaClO from 283 to 373 K

A. Aracena; R. Rubilar; O. Jerez; D. Carvajal

doi:10.1179/1879139515Y.0000000028

Dissolution of MoS₂ concentrate using NaClO from 283 to 373 K

A. Aracena, R. Rubilar, O. Jerez, D. Carvajal

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

This study analyses the leaching process of molybdenite (MoS₂) concentrate using sodium hypochlorite (NaClO) at temperatures ranging from 283 to 373 K. The following variables were studied: leaching time, stirring velocity, temperature, NaClO concentration, NaOH concentration, particle size and liquid:solid ratio. The optimum parameters for molybdenite dissolution were: Time=0.81 h, stirring speed=800 rev min^-1, temperature=303 K, NaClO concentration=1.49M, NaOH concentration=8.01M, particle size=45 μm and liquid:solid ratio=300 : 1. Under these conditions, molybdenite dissolution reached around 99%, while Cu and Fe recovery were insignificant. Analysis using XRD, QUESCAM and SEM showed release indices and subsequent reaction of the MoS₂ and the constituent parts of Cu and Fe.

Original language	English
Pages (from-to)	455-459
Number of pages	5
Journal	Canadian Metallurgical Quarterly
Volume	54
Issue number	4
DOIs	https://doi.org/10.1179/1879139515Y.0000000028
State	Published - 2015
Externally published	Yes

Keywords

Molybdenite concentrate
Sodium hydroxide
Sodium hypochlorite
Temperature

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10.1179/1879139515Y.0000000028

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title = "Dissolution of MoS2 concentrate using NaClO from 283 to 373 K",

abstract = "This study analyses the leaching process of molybdenite (MoS2) concentrate using sodium hypochlorite (NaClO) at temperatures ranging from 283 to 373 K. The following variables were studied: leaching time, stirring velocity, temperature, NaClO concentration, NaOH concentration, particle size and liquid:solid ratio. The optimum parameters for molybdenite dissolution were: Time=0.81 h, stirring speed=800 rev min-1, temperature=303 K, NaClO concentration=1.49M, NaOH concentration=8.01M, particle size=45 μm and liquid:solid ratio=300 : 1. Under these conditions, molybdenite dissolution reached around 99%, while Cu and Fe recovery were insignificant. Analysis using XRD, QUESCAM and SEM showed release indices and subsequent reaction of the MoS2 and the constituent parts of Cu and Fe.",

keywords = "Molybdenite concentrate, Sodium hydroxide, Sodium hypochlorite, Temperature",

author = "A. Aracena and R. Rubilar and O. Jerez and D. Carvajal",

note = "Publisher Copyright: {\textcopyright} 2016 Canadian Institute of Mining, Metallurgy and Petroleum.",

year = "2015",

doi = "10.1179/1879139515Y.0000000028",

language = "English",

volume = "54",

pages = "455--459",

journal = "Canadian Metallurgical Quarterly",

issn = "0008-4433",

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number = "4",

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TY - JOUR

T1 - Dissolution of MoS2 concentrate using NaClO from 283 to 373 K

AU - Aracena, A.

AU - Rubilar, R.

AU - Jerez, O.

AU - Carvajal, D.

PY - 2015

Y1 - 2015

N2 - This study analyses the leaching process of molybdenite (MoS2) concentrate using sodium hypochlorite (NaClO) at temperatures ranging from 283 to 373 K. The following variables were studied: leaching time, stirring velocity, temperature, NaClO concentration, NaOH concentration, particle size and liquid:solid ratio. The optimum parameters for molybdenite dissolution were: Time=0.81 h, stirring speed=800 rev min-1, temperature=303 K, NaClO concentration=1.49M, NaOH concentration=8.01M, particle size=45 μm and liquid:solid ratio=300 : 1. Under these conditions, molybdenite dissolution reached around 99%, while Cu and Fe recovery were insignificant. Analysis using XRD, QUESCAM and SEM showed release indices and subsequent reaction of the MoS2 and the constituent parts of Cu and Fe.

AB - This study analyses the leaching process of molybdenite (MoS2) concentrate using sodium hypochlorite (NaClO) at temperatures ranging from 283 to 373 K. The following variables were studied: leaching time, stirring velocity, temperature, NaClO concentration, NaOH concentration, particle size and liquid:solid ratio. The optimum parameters for molybdenite dissolution were: Time=0.81 h, stirring speed=800 rev min-1, temperature=303 K, NaClO concentration=1.49M, NaOH concentration=8.01M, particle size=45 μm and liquid:solid ratio=300 : 1. Under these conditions, molybdenite dissolution reached around 99%, while Cu and Fe recovery were insignificant. Analysis using XRD, QUESCAM and SEM showed release indices and subsequent reaction of the MoS2 and the constituent parts of Cu and Fe.

KW - Molybdenite concentrate

KW - Sodium hydroxide

KW - Sodium hypochlorite

KW - Temperature

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U2 - 10.1179/1879139515Y.0000000028

DO - 10.1179/1879139515Y.0000000028

M3 - Article

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SN - 0008-4433

VL - 54

SP - 455

EP - 459

JO - Canadian Metallurgical Quarterly

JF - Canadian Metallurgical Quarterly

IS - 4

ER -

Dissolution of MoS₂ concentrate using NaClO from 283 to 373 K

Abstract

Keywords

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