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.

scholarly journals Production of pellet feed from slimes

2013 ◽  
Vol 66 (3) ◽  
pp. 391-395 ◽  
Author(s):  
Elias Fonseca Castro ◽  
Antonio Eduardo Clark Peres
Keyword(s):  
Representative Sample ◽  
Iron Ore ◽  
Silica Content ◽  
Iron Ores ◽  
Reverse Flotation ◽  
Iron And Steel ◽  
Steel Making ◽  
Pellet Feed ◽  
Iron Bearing ◽  
Iron Ore Concentrate

The recovery of iron bearing minerals from the reject products of the beneficiation of iron ores is a challenge concerning the sustainability of the preliminary stage of iron and steel making. This investigation addressed the production of iron ore concentrate within the specifications of Samarco's pellet feed from a representative sample of the concentrator I desliming cyclone's (101.6 mm, 4") overflow. The experiments included stages of microdesliming and flotation. The developed microdesliming method was efficient and the concentrate produced via cationic reverse flotation presented silica content compatible with pellet feed requirements.

An Experimental Research on Cationic Reverse Flotation of Anshan-Type Iron Ores

2020 ◽  
Vol 980 ◽  
pp. 359-367
Author(s):  
Zhong Hang Cheng ◽  
Dian Bing Zhu ◽  
Shu Juan Dai ◽  
Ahmed Sobhy
Keyword(s):  
Iron Ore ◽  
Spectroscopic Analysis ◽  
Iron Ores ◽  
Reverse Flotation ◽  
Iron Concentrate ◽  
Mineral Separation ◽  
Pulp Temperature ◽  
Reagent Consumption ◽  
Depressing Agent

The mineral processing technology of Anshan-type iron ores has been developed in a rapid speed in recent years, and the combined flowsheet at the core of anionic reverse flotation has become a mainstream in the beneficiation of Anshan-type iron ores in china. With the successful application of this combined flowsheet, some obvious problems are also emerging. Such as high requirement of pulp temperature, complex reagent system, high cost of reagent consumption and so on. In view of this,we have carried out an experimental study on the separation of Anshan type iron ore by cationic reverse flotation . A new collector (named KBD) which is mixed amines have been developed . On this basis, the actual mineral separation experiment is carried out in the laboratory.With KBD as the collector,and starch and sodium hexametaphoshate as the depressant, has resulted in an iron concentrate of 68.16% and recovery rate of 89.71%. The determination of the electrokinetic potential and the infra-red spectroscopic analysis show that KBD can effectively and priorly adsorbed to the surface of quartz, and has greatly change the elecrtokinetic potential of quartz.The interaction of the depressing agent has increased the differences of the floatabilities in quartz and hermitite and changed the surface electric property so that the effective separation has been realized.

scholarly journals Nickel laterite concentration through a non-conventional method with surface sulfidization

DYNA ◽  
2020 ◽  
Vol 87 (215) ◽  
pp. 18-27
Author(s):  
Moises Oswaldo Bustamante Rúa ◽  
Sindy Dayanis Gonzalez Arias ◽  
Pablo Bustamante Baena
Keyword(s):  
Iron Oxides ◽  
Conventional Method ◽  
New Technology ◽  
Froth Flotation ◽  
Nickel Content ◽  
Reverse Flotation ◽  
Nickel Laterite ◽  
Physical Chemical ◽  
Nickel Ores ◽  
Chemical Conditions

Nickel ores are found mainly as sulfides and laterites in oxidized ores, such as iron oxides, which are usually “Ni-bearing”. This investigation determined the physical-chemical conditions necessary to increase the tenor and recovery in lateritic deposits, with the implementation of a new technology that allows the increase of the tenor (a process called “up-grading”). The froth flotation is proposed as a concentrating process to increase the Nickel content in the lateritic deposits. By means of sulfidization and direct flotation, specific hydrophobicity of the mineral is achieved, substantially improving the nickel concentrations in the process, with recoveries close to 86%, which, compared with conventional direct and inverse floats without effecting this activation with Na2S, results in recoveries of 70% and 16%, respectively. The reverse flotation also increases the Nickel content with an approximate recovery of 70%; however, the froth flotation, with activation Na2S is still better.

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.

scholarly journals Combined Magnetic, Transient Electromagnetic, and Magnetotelluric Methods to Detect a BIF-Type Concealed Iron Ore Body: A Case Study in Gongchangling Iron Ore Concentration Area, Southern Liaoning Province, China

Minerals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1044
Author(s):  
Jianfei Fu ◽  
Sanshi Jia ◽  
Ende Wang
Keyword(s):  
Data Collection ◽  
Iron Ore ◽  
Survey Methods ◽  
Survey Method ◽  
Magnetic Survey ◽  
Iron Ores ◽  
Transient Electromagnetic ◽  
Ore Bodies ◽  
Geophysical Surveys ◽  
Iron Bearing

The detection and evaluation of concealed mineral resources deep in metallic mines and in the surrounding areas remain technically difficult. In particular, due to the complex topographic and geomorphic conditions on the surface, the detection environments in these areas limit the choices of detection equipment and data collection devices. In this study, based on metallogenic theory and the metallogenic geological characteristics of banded iron formation (BIF)-type iron ores, equipment for surface geophysical surveys (i.e., the high-precision ground magnetic survey method, the transient electromagnetic method, and the magnetotelluric method) and data collection devices capable of taking single-point continuous measurements were employed to detect the concealed iron ore bodies in the transition zone CID-1 between the Hejia and Dumu iron deposits in the Gongchangling iron ore concentration area in the Anshan-Benxi area (Liaoyang, China), a representative area of BIF-type iron ores. The results showed that an optimal combination of these geophysical survey methods accurately determined the anomalous planar spatial locations and anomalous profile morphologies of the concealed iron ore bodies. On this basis, we determined their locations, burial depths, and scales. Two anomalous zones induced by concealed iron ore bodies, YC-1 and YC-2, were discovered in zone CID-1. Two concealed iron-bearing zones, one shallow (0–150 m) and one deep (300–450 m), were found in YC-1. A 100 m scale drilling test showed that the cumulative thickness of the shallow iron-bearing zone was over 23.6 m.

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.

Carbon Doped Iron Ore Using Palm Kernel Shell

2013 ◽  
Vol 701 ◽  
pp. 28-31 ◽  
Author(s):  
Rusila Zamani Abd Rashid ◽  
Hadi Purwanto ◽  
Hamzah Mohd Salleh ◽  
Mohd Hanafi Ani ◽  
Nurul Azhani Yunus ◽  
...  
Keyword(s):  
Iron Ore ◽  
Palm Kernel ◽  
Reduction Process ◽  
Attractive Alternative ◽  
Low Grade ◽  
Iron Ores ◽  
Solid Carbon ◽  
Green Composite ◽  
Biomass Waste ◽  
Palm Kernel Shell

This paper pertains to the reduction process of local low grade iron ore using palm kernel shell (PKS). It is well known that low grade iron ores contain high amount of gangue minerals and combined water. Biomass waste (aka agro-residues) from the palm oil industry is an attractive alternative fuel to replace coal as the source of energy in mineral processing, including for the treatment and processing of low grade iron ores. Both iron ore and PKS were mixed with minute addition of distilled water and then fabricated with average spherical diameter of 10-12mm. The green composite pellets were subjected to reduction test using an electric tube furnace. The rate of reduction increased as temperature increases up to 900 °C. The Fe content in the original ore increased almost 12% when 40 mass% of PKS was used. The reduction of 60:40 mass ratios of iron ore to PKS composite pellet produced almost 11.97 mass% of solid carbon which was dispersed uniformly on the surface of iron oxide. The aim of this work is to study carbon deposition of PKS in iron ore through reduction process. Utilization of carbon deposited in low grade iron ore is an interesting method for iron making process as this solid carbon can act as energy source in the reduction process.

Experimental Research on Bonding Intensity of Iron Ores in the Sintering Process

2011 ◽  
Vol 391-392 ◽  
pp. 60-64
Author(s):  
Fang Yi Long ◽  
Sheng Li Wu ◽  
Juan Zhu ◽  
Yuan Du ◽  
Guo Liang Zhang
Keyword(s):  
South Africa ◽  
Liquid Phase ◽  
Experimental Research ◽  
Negative Correlation ◽  
Influence Factors ◽  
Iron Ores ◽  
Sintering Process ◽  
Different Types ◽  
Lower Porosity

The bonding intensity of four kinds of ores from Brazil, Australia and South Africa is researched in this study, and the influence factors are analyzed. The results show that, the ores of different types have apparently differences in bonding intensity, ores from Brazil and South Africa have high bonding intensity, while ores from Australia have low bonding intensity; The foundation of generation of effective liquid is adequate liquid phase fluidity and the lower porosity of core ore; The ratio of porosity of core ore and the index of liquid phase fluidity has negative correlation with the bonding intensity.

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