scholarly journals Comparative Effectiveness of Flotation Technique at Varying Conditions for Beneficiation of Itakpe and Agbaja Iron Ores

2020 ◽  
Vol 5 (6) ◽  
pp. 708-714
Author(s):  
Serah Akande ◽  
Oladunni O. Alabi ◽  
E. O. Ajaka ◽  
Temitope Amos Olatunji
Keyword(s):  
Particle Size ◽  
Iron Ore ◽  
Froth Flotation ◽  
Iron Ores ◽  
X Ray ◽  
Sieve Size ◽  
Sodium Ethyl ◽  
Significant Enrichment ◽  
Iron Deposits ◽  
Flotation Technique

Itakpe and Agbaja iron ores are part of prominent iron deposits in Nigeria, yet studies on their beneficiation via froth flotation are relatively limited. Thus, this research investigated comparatively the flotation behaviour of both ores at varied pulp pH, particle size, and collector type. The ores were also examined using Energy Dispersive X-ray Fluorescence Spectroscopy, Petrological, and fractional sieve size analyses. Fifty (50) kg sample each of the ores was sourced for the research. Then, size fractions (63, 75, and 125 mm) of each ore were prepared and subjected to froth flotation using different collectors; Potassium Amyl Xanthate (PAX), Sodium Ethyl Xanthate (SEX), and Oleic Acid, at varying pulp pH ranging from 9-11. From the results obtained Itakpe iron ore assayed 36.18% Fe2O3 and contains predominantly haematite, sillimanite, and quartz while Agbaja iron ore contains chiefly, quartz and haematite, and assayed 40.6% Fe2O3 alongside 1.505% P2O5. The liberation sizes of both ores lie favouraby in the range -125+75 µm. Beneficiation studies carried out revealed that significant enrichment of both ores was actualized. Thus, it was established that Itakpe iron ore is best processed using PAX at pH 11 and particle size of 125 µm yielding concentrates assaying 67.66% Fe2O3 at a recovery of ~90% while for Agbaja iron ore, PAX at pH 9 and particle size of 63 µm is considered best to yield enriched concentrates assaying 65.5% Fe2O3 at 52.5%.recovery.

Measurements of Low Concentration Components in Iron Ores using Fusion Method

1991 ◽  
Vol 35 (B) ◽  
pp. 1147-1155 ◽  
Author(s):  
K. Yamada ◽  
H. Kohno ◽  
T. Arai
Keyword(s):  
Chemical Analysis ◽  
Iron Ore ◽  
Background Radiation ◽  
Trace Element Analysis ◽  
Fusion Method ◽  
Iron Ores ◽  
Order Model ◽  
Element Analysis ◽  
X Ray ◽  
First Order

AbstractThe problem of background radiation in X-ray fluorescence trace element analysis of fused-glass iron ore samples is addressed. A first-order model of coherent and Comptcn scattering with primary absorption is presented and used to correct measurements. Overlap coefficients for elements in iron ores are presented. The importance of these corrections is demonstrated. The accuracy achieved with X-ray measurements after background corrections compares well with the accuracy of chemical analysis.

scholarly journals Flotation study on low-grade antimony ore of qilla abdullah, Balochistan, Pakistan

2015 ◽  
Vol 49 (2) ◽  
pp. 95-102
Author(s):  
MA Bhatti ◽  
KR Kazmi ◽  
A Mehmood ◽  
R Mehmood ◽  
A Ahad ◽  
...  
Keyword(s):  
Particle Size ◽  
Froth Flotation ◽  
Agitation Speed ◽  
Pulp Density ◽  
Low Grade ◽  
Single Factor ◽  
Flotation Technique ◽  
Concentrate Grade ◽  
Optimum Grade

A low-gradeantimony deposit originating from district Qilla Abdullah, Balochistan Province of Pakistan, containing stibnite as an economical mineral was beneficiated by froth flotation technique. Flotation parameters such as particle size of the feed, pulp density, pH of the pulp, agitation speed, type and dose of reagents (i.e. collector, frother, activator, regulator and modifier) and the conditioning time were studied on the basis of single-factor variation experiment in order to get the optimum grade and recovery. Regrinding of the rougher concentrate followed by cleaning andrecleaning of rougher concentrateensured a final concentrate grade of 65.12% Sb@ 85.79% recovery. This concentrate is suitable for the extraction of metal and production of chemicals. DOI: http://dx.doi.org/10.3329/bjsir.v49i2.22003 Bangladesh J. Sci. Ind. Res. 49(2), 95-102, 2014

The Oxidizing Roasting and Reducing Melting of Titaniferous and Conversion Iron Ores

2017 ◽  
Vol 371 ◽  
pp. 117-120 ◽  
Author(s):  
Andrey N. Dmitriev ◽  
G.Yu. Vitkina ◽  
R.V. Petukhov ◽  
L.A. Ovchinnikova
Keyword(s):  
Chemical Composition ◽  
Phase Analysis ◽  
Iron Ore ◽  
Raw Materials ◽  
Pig Iron ◽  
Iron Ores ◽  
X Ray Diffraction ◽  
X Ray ◽  
Melting Temperatures ◽  
Conversion Iron

The chemical composition of pellets of various basicity from pig iron ore materials is described. The metallurgical characteristics (reducibility, strength, softening and melting temperatures) is analyzed. The micro X-ray diffraction phase analysis is made. Also the sinter of various basicity from titaniferous raw materials is investigated.

scholarly journals Assessing the Quality of Iron Ores for Bloomery Smelting: Laboratory Experiments

Minerals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 33
Author(s):  
Ivan Stepanov ◽  
Konstantin Borodianskiy ◽  
Adi Eliyahu-Behar
Keyword(s):  
Iron Ore ◽  
Analytical Techniques ◽  
Major Elements ◽  
Iron Ores ◽  
Southern Levant ◽  
X Ray ◽  
Trading Patterns ◽  
Political Economic ◽  
Shed Light

There is fragmentary knowledge of iron ore sources exploited in the past for many regions including the Southern Levant. This missing information has the potential to shed light on political, economic, craft-production, and trading patterns of past societies. This paper presents the results of smelting experiments performed in graphite crucibles and a muffle furnace, using 14 iron ore samples from the Southern Levant, in an attempt to determine their suitability for smelting using ancient techniques. A range of analytical techniques, including optical and electron microscopy, Fourier-transform infrared spectroscopy, X-ray powder diffraction, and portable X-ray fluorescence were used to comparatively investigate the mineralogy and composition of the precursor iron ores and their smelting products: Iron bloom and slag. Several parameters attesting to the ability of a given ore to be successfully reduced and consolidated into a solid metal mass were quantified. The generated results highlight the significance of a ‘correct balance’ between iron oxides and other major elements in the smelting system in order to form fluid slag and a well-consolidated bloom. These data contribute to the understanding of factors, potentially influencing choices of iron ore exploitation by past human societies in the Southern Levant.

The Reduction Processes of the Titanium Containing Iron Ores Treatment

2016 ◽  
Vol 369 ◽  
pp. 6-11 ◽  
Author(s):  
Andrey N. Dmitriev ◽  
R.V. Petukhov ◽  
G.Yu. Vitkina ◽  
Yu.A. Chesnokov ◽  
S.V. Kornilkov ◽  
...  
Keyword(s):  
Iron Ore ◽  
Raw Materials ◽  
Electric Melting ◽  
Iron Ores ◽  
X Ray ◽  
Reduction Processes ◽  
Furnace Melting ◽  
Metallurgical Processing ◽  
Converter Melting

The questions of metallurgical processing of titanium-containing ores are considered. The ores and concentrates of the Kachkanarsky deposit of low-titanous and high-titanous are studied. The reducibility, durability, temperatures of a softening and melting of metallurgical iron ore raw materials are studied in vitro. Via X-ray the structural analysis are carried out. The calculations by means of mathematical models of pyrometallurgical processes are executed. Possibility of the processing of these ores according to schemes is shown: «blast furnace melting − converter melting» and «metallization – electric melting».

scholarly journals Quantitative phase analysis of iron ore concentrates

2002 ◽  
Vol 55 (4) ◽  
pp. 263-266 ◽  
Author(s):  
Geraldo Magela da Costa ◽  
Valdirene Gonzaga de Resende ◽  
Norberto Magno Toríbio
Keyword(s):  
Chemical Analysis ◽  
Iron Ore ◽  
Quantitative Phase Analysis ◽  
Iron Ores ◽  
Sample Holder ◽  
X Ray Diffraction ◽  
X Ray ◽  
Integral Width ◽  
Linear Behavior ◽  
Wet Chemical

The quantification of goethite, magnetite, martite and specularite in iron ores was successfully achieved by a combination of wet chemical analysis and x-ray diffraction. It was found that the intensity of the goethite (111) peak is constant for a certain sample provided that the same sample holder is used. Calibration curves with a linear behavior have been derived using the areas of the above mentioned peak and the amounts of goethite obtained by Mössbauer spectroscopy and optical microscopy. In addition, the integral width of the hematite (012) line broadens linearly as the amount of martite increases, thus allowing an estimation of the amounts of martite and specularite.

scholarly journals Collecting Agent–Mineral Interactions in the Reverse Flotation of Iron Ore: A Brief Review

Minerals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 681
Author(s):  
Guixia Fan ◽  
Liguang Wang ◽  
Yijun Cao ◽  
Chao Li
Keyword(s):  
Iron Oxides ◽  
Iron Ore ◽  
Froth Flotation ◽  
Surface Characteristics ◽  
Iron Ores ◽  
Reverse Flotation ◽  
Adsorption Mechanisms ◽  
Collecting Agents ◽  
Different Types ◽  
Iron Bearing

Froth flotation has been widely used in upgrading iron ores. Iron ore flotation can be performed in two technical routes: direct flotation of iron oxides and reverse flotation of gangue minerals with depression of iron oxides. Nowadays, reverse flotation is the most commonly used route in iron ore flotation. This review is focused on the reverse flotation of iron ores, consisting of reverse cationic flotation and reverse anionic flotation. It covers different types of collecting agents used in reverse iron ore flotation, the surface characteristics of minerals commonly present in iron ores (e.g., iron oxides, quartz, alumina-bearing minerals, phosphorus-bearing minerals, iron-bearing carbonates, and iron-bearing silicates), and the adsorption mechanisms of the collecting agents at the mineral surface. The implications of collecting agent–mineral interactions for improving iron ore flotation are discussed.

Selective Fragmentation of Oolitic Iron Ores by Microwave Pretreatment

2012 ◽  
Vol 1380 ◽  
Author(s):  
Ernesto F. Campos-Toro ◽  
Shaoxian Song ◽  
Alejandro López-Valdivieso
Keyword(s):  
Particle Size ◽  
Microwave Radiation ◽  
Iron Ore ◽  
Microwave Treatment ◽  
Gangue Mineral ◽  
Iron Ores ◽  
Iron Minerals ◽  
The Earth ◽  
Mineral Interfaces ◽  
Oolitic Iron Ore

ABSTRACTThere are plentiful of oolitic iron ore resources on the earth, which cannot be currently exploited because of great difficulties for beneficiating the ore. In this work, the selective fragmentation of a Chinese oolitic iron ore (which fragments ore particles along the interfaces of iron and gangue minerals) through microwave was studied in order to liberate the iron minerals at a coarse particle size and thus to effectively concentrate the iron minerals from the ore. The experimental results have shown that a large amount of fractures on the oolitic iron ore were formed along iron and gangue mineral interfaces after being treated by microwave radiation at an appropriate frequency and potential. Following a microwave treatment, the oolitic iron ore was ground by using a ball vertimill. It was indicated that the pretreatment increased the liberation of the iron and gangue minerals at the same particle size, about 10-20% and 10-30% respectively.

scholarly journals Evaluation of Mesh of Liberation of Zard Koh and Kulli Koh Iron Ores of Pakistan

2018 ◽  
Vol 37 (4) ◽  
pp. 569-580 ◽  
Author(s):  
Sultan Ahmed Khoso ◽  
Muhammad Ishaque Abro ◽  
Muhammad Hassan Agheem
Keyword(s):  
Iron Ore ◽  
Iron Ores ◽  
Size Fractions ◽  
X Ray ◽  
Concentration Method ◽  
Natural Iron ◽  
Energy Dispersive Spectroscope ◽  
Iron Bearing ◽  
Representative Samples ◽  
Scanning Electron

Liberation size plays a significant role to select a correct and successful concentration method for natural iron ores. This paper aims to evaluate the liberation size of two newly discovered iron ores, namely Zard Koh and Kulli Koh, existing in Chagai region of Pakistan. Zard Koh iron ore is mainly composed of maghemite along with the pyrite, chlorite, grossular and admontite as gangue minerals, whereas, Kulli Koh iron ore is comprised of hematite mostly with quartz, dravite and kaolinite as the gangue minerals. The representative samples of ores were pulverized and sieved to different size fractions. The liberation size of iron bearing minerals and gangues was investigated by analyzing the different size fractions of each ore using XRF (X-Ray Fluorescence), SEM (Scanning Electron Microscope) attached with EDS (Energy Dispersive Spectroscope). The XRF results revealed that the most probable liberation size of Zard Koh and Kulli Koh ores is most likely existing at -75+45 and -150+106 m, respectively. In order to confirm this liberation size, further evidences were collected using SEM and EDS examinations. It is interesting to note that the results obtained from SEM and EDS were quite in agreement with XRF results.

scholarly journals Mineralogical, textural and liberation studies of tungsten ore deposits of Chitral, Khyber Pakhtoon Khwa Province, Pakistan

2014 ◽  
Vol 47 (1) ◽  
pp. 95-102
Author(s):  
Rashid Mehmood ◽  
Muhammad Arif Bhatti ◽  
Kashif Butt ◽  
Kamarn Raza Kazmi ◽  
Adnan Akram
Keyword(s):  
Crystal Size ◽  
Froth Flotation ◽  
Ore Deposits ◽  
Mutual Arrangement ◽  
Ore Deposit ◽  
X Ray ◽  
Ore Body ◽  
Flotation Technique ◽  
Selection Of ◽  
Suitable Process

An investigation was undertaken on tungsten ore deposits of Chitral area, Khyber Pakhtoon Khawa Province, Pakistan for its evaluation and subsequently selection of a suitable process for its beneficiation. The ore deposit was evaluated by microscopy, petrography, X-ray diffractometry and chemical analysis. The principal mineral constituents present in the ore were identified. The textural characteristics such as crystal size, shape and mutual arrangement of the component minerals in the ore body were investigated. The degree of liberation of valuable mineral was studied by grain mounts. Mineralogy, texture and liberation studies reveal that this ore is amenable to beneficiation by froth flotation technique.

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