Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
UPGRADING VALUABLE MINERALIZATION AND REJECTING MAGNESIUM SILICATES BY PRE-CONCENTRATION OF MAFIC ORES
Date
2014-01-01
Author
Altun, Naci Emre
Klein, B
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
186
views
0
downloads
Cite This
Amenability of mafic ores to pre-concentration was investigated with respect to ore mineralization characteristics. For the pre-concentration tests seven ores from various nickel-copper operations at Sudbury, Ontario were subjected to dense medium separation. Size assays of metal values, i.e. distribution of nickel and copper with respect to size fractions, were also determined. The ores were assessed in three categories of valuable mineralization as massive pure sulphides, coarse massive sulphide grains and disseminated sulphides. For ores with massive pure sulphides and coarse massive sulphide grains even a size classification based pre-concentration route could be sought since a clear trend of metal enrichment was identified towards finer fractions. Orebodies of similar mineralogy had similar responses to pre-concentration tests. The best results were for those ore bodies with a distinct differentiation between mineralization and gangue, i.e. the ores with massive pure sulphides, where nickel recoveries of 97% and mass rejections of 38-53% were achieved. Similar results were obtained for ores with coarse massive sulphides. For disseminated sulphide mineralogy relatively lower mass rejection was attained with acceptable recoveries of metals. Rejection of magnesium bearing gangue, such as talc, was identified as another benefit of pre-concentration. The extent of magnesium rejection occurred as a function of ore mineralogy. Clear distinction between valuable mineralization and gangue provided preferential magnesium rejection at high levels with no or minor metal losses.
Subject Keywords
Mafic Ores
,
Pre-Concentration
,
Dense Media Separation
,
Metallic Sulphides
,
Ore Mineralogy
URI
https://hdl.handle.net/11511/36313
Journal
PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING
DOI
https://doi.org/10.5277/ppmp140117
Collections
Department of Mining Engineering, Article
Suggestions
OpenMETU
Core
EVALUATION OF LOW GRADE IRON ORE DEPOSIT IN ERZINCAN-TURKEY FOR IRON ORE PELLET CONCENTRATE PRODUCTION
SİVRİKAYA, OSMAN; Arol, Ali İhsan (2012-01-01)
In this study the separation possibility of gangue minerals from a low grade magnetite ore with 45% Fe from an iron ore deposit located near Erzincan-Turkey was investigated. The iron ore deposit consists of mainly magnetite mineral. Hematite is the second iron oxide found in the deposit. The gangue minerals contain mainly SiO2 and Al2O3 impurities. The main object of the research is to investigate the production of a concentrate suitable for iron ore pellet production. The concentrate for pellet production...
Influence of mineralogical characteristics on rheological behavior of tailings slurries
Aktaş, Berke Beste; Altun, Naci Emre; Department of Mining Engineering (2022-8)
The gradual depletion of high-grade ores force mining operations to process ores to finer particles to extract valuable minerals. With the increased amount of fine particles and, in some cases, high clay mineral content presence, complex rheological behaviors in phases including suspensions, such as high viscosity and high yield stress have been observed, causing a decrease in the performance of certain mineral processing operations. Through the study, rheological characteristics of ore tailings slurries wi...
Use of waste pyrite from mineral processing plants in soil remediation
Aydın, Gülşen; Arol, Ali İhsan; Department of Mining Engineering (2011)
Pyrite (FeS2) is commonly present in complex sulphide ores in significant amounts. After the enrichment of such ores by flotation, pyrite is either produced as a separate concentrate and sold to acid manufactures or removed and disposed off as tailing. Due to lack of demand from manufacturers, most of pyrites is usually disposed off as tailing. Therefore, pyrite is usually a waste from complex sulphide ores. Yet, it may be a remediation additive for calcareous soils and calcareous- alkali soils deficient in...
Laboratory-scale smelting of limonitic laterite ore from Central Anatolia
Pournaderi, S.; KESKİNKILIÇ, ENDER; Geveci, Ahmet; Topkaya, Yavuz Ali (2017-07-01)
The feasibility of ferronickel production from a low-grade limonitic laterite ore was investigated. The ore was first calcined and then prereduced in the solid state. The reduced ore was then smelted to produce ferronickel. The effects of coal addition, smelting temperature, and retention time on the process were investigated. Chemical and physical losses in the slag were separately quantified. Coal addition was the main parameter that controlled the ferronickel grade and losses in the slag. The melting poi...
Optimization of conditions to produce manganese and iron carbides from Denizli-Tavas manganese ore by solid state reduction
Akıl, Cem; Geveci, Ahmet; Department of Metallurgical and Materials Engineering (2007)
Main purpose of this study was to find the optimum conditions to produce a charge material for ferromanganese production or steelmaking with high content of iron and manganese carbides from Denizli-Tavas manganese ore by carbothermic reduction and investigate the effects of temperature, time, amount of active carbon addition and CaO addition on this reduction. The ore was calcined and then mixed with active carbon and CaO. Experiments were performed in a horizontal tube furnace that can be heated up to 1700...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
N. E. Altun and B. Klein, “UPGRADING VALUABLE MINERALIZATION AND REJECTING MAGNESIUM SILICATES BY PRE-CONCENTRATION OF MAFIC ORES,”
PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING
, pp. 203–215, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36313.