Improved Flotation of Oolitic Hematite Ore Based on a Novel Cationic Collector

Oolitic hematite is one of the most refractory iron ores with complicate mineral compositions and abundant reserves in China. The hematite and limonite in the ore integrate closely with fine particles of collophanite, quartz, chamosite, calcite and chalcedony to form concentric ring structure, making the separation of the minerals extremely difficult. Since the tiny hematite crystal can not be liberated during the grinding of the ore the beneficiation can only be accomplished by recovering iron minerals aggregate with hematite as the major component. The previous research results showed that reverse flotation with fatty acid collectors could remove liberated phosphate minerals but not the quartz, chlorite and silicate minerals. This was because the gangue minerals such as quartz were contaminated by iron on the surface and there were high content of iron in some silicate minerals and high content of silicon in iron minerals, causing the floatability difference between the silicon and the iron minerals very small and thus the separation efficiency very low. Experiments were conducted to beneficiate the ore by reverse flotation with different cationic collectors. The results indicated that the flotation separation efficiency with most cationic collectors such as dodecylamine, ether amine, GE601 or GE609 was not satisfactory. However, a novel cationic collector for silicon removal, EM506 was found to be specifically selective to separate the gangue minerals from the iron ore with an increase of TFe grade from 49% to more than 58% and a recovery of TFe greater than 96%, which provided a promising approach for the beneficiation of the refractory oolitic hematite ore.

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Selective Flocculation of Fine Grain Oolitic Hematite Behavior Research

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.303-306.2537 ◽

2013 ◽

Vol 303-306 ◽

pp. 2537-2540

Author(s):

Fu Sheng Niu ◽

Chen Miao ◽

Jin Xia Zhang

Keyword(s):

Water Quality ◽

Iron Ore ◽

Fine Particles ◽

Mixing Time ◽

Selective Flocculation ◽

Essential Condition ◽

Fine Grain ◽

Dispersing Agent ◽

Hematite Ore ◽

Oolitic Hematite Ore

The fine oolitic hematite ore (<20µm) is easily covered by the ore slime, therefore, it is processed very difficultly with traditional crafts, for example, gravity treatment, magnetic separation, and flotation. The tiny iron ore is unable to recycle effectively, bring about a large of useful minerals running off. It is indicated that the selective flocculation is effective separation craft in many research works. The good dispersion of fine particles is the selective flocculation essential condition, the excessive dispersion will destroy the selective flocculation, at the same time it can be influenced by the water quality, pH, the mixing time, the shear rate and the dispersing agent dosage. In this paper, to oolitic hematite ore, the chemistry dispersion research is conducted to provide the foundation for further selective flocculation separation.

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Study on Dispersion Behaviors of Oolitic Hematite Ultrafine Particles in Water

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.383-390.3169 ◽

2011 ◽

Vol 383-390 ◽

pp. 3169-3173

Author(s):

Fu Sheng Niu ◽

Shu Xian Liu ◽

Jin Xia Zhang ◽

Yi Miao Nie

Keyword(s):

Water Quality ◽

Ultrafine Particles ◽

Iron Ore ◽

Fine Particles ◽

Mixing Time ◽

Selective Flocculation ◽

Essential Condition ◽

Dispersing Agent ◽

Hematite Ore ◽

Oolitic Hematite Ore

The fine oolitic hematite ore (＜20μm) is easily covered by the ore slime, therefore, it is processed very difficultly with traditional crafts, for example, gravity treatment, magnetic separation, and flotation. The tiny iron ore is unable to recycle effectively, bring about a large of useful minerals running off. It is indicated that the selective flocculation is effective separation craft in many research works. The good dispersion of fine particles is the selective flocculation essential condition, the excessive dispersion will destroy the selective flocculation, at the same time it can be influenced by the water quality, pH, the mixing time, the shear rate and the dispersing agent use level. In this article, to oolitic hematite ore, the chemistry dispersion research is conducted to provide the foundation for further selective flocculation separation.

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Study on Dispersion Character of Fine Oolitic Hematite Ore Particle

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.50-51.924 ◽

2011 ◽

Vol 50-51 ◽

pp. 924-928

Author(s):

Feng Jiu Li

Keyword(s):

Water Quality ◽

Iron Ore ◽

Fine Particles ◽

Mixing Time ◽

Selective Flocculation ◽

Essential Condition ◽

Dispersing Agent ◽

Hematite Ore ◽

Oolitic Hematite Ore ◽

Dispersion Character

The fine oolitic hematite ore (＜20μm) is easily covered by the ore slime, therefore, it is processed very difficultly with traditional crafts, for example, gravity treatment, magnetic separation, and flotation. The tiny iron ore is unable to recycle effectively, bring about a large of useful minerals running off. It is indicated that the selective flocculation is effective separation craft in many research works. The good dispersion of fine particles is the selective flocculation essential condition, the excessive dispersion will destroy the selective flocculation, at the same time it can be influenced by the water quality, pH, the mixing time, the shear rate and the dispersing agent use level. In this article, to oolitic hematite ore, the chemistry dispersion research is conducted to provide the foundation for further selective flocculation separation.

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Development of Concentration Technology for Medium-Impregnated Hematite Quartzite of Kryvyirih Iron Ore Basin

Science and innovation ◽

10.15407/scine16.06.056 ◽

2020 ◽

Vol 16 (6) ◽

pp. 56-71

Author(s):

M.I. Stupnik ◽

◽

V.V. Peregudov ◽

V.S. Morkun ◽

T.A. Oliinyk ◽

...

Keyword(s):

Iron Ore ◽

Fine Particles ◽

Research Data ◽

Mineral Analysis ◽

Problem Statement ◽

High Quality ◽

Iron Extraction ◽

Fe Content ◽

Hematite Ore ◽

First Time

Introduction. Trends in developing Ukraine’s metallurgy in the context of using its mineral raw base indicate prospects for mining hematite quartzite deposits. Problem Statement. The problem of producing high-quality hematite ore concentrates is associated with the fact that aggregates of martite, goethite, marshallit quartz, and other low hard minerals can be easily reground while crushing and grinding. This results in increased content of fine particles (slimes), which decreases selectivity of separating ore and non-metallic minerals. One of the ways to solve this problem is gentle ore grinding Purpose. Developing a technology of dry and wet concentration for hematite quartzite from Kryvyi Rih Iron Ore Basin. Materials and Methods. While conducting the research, a set of methods are used including generalization of research data; chemical and mineral analysis of ore and concentration products prior to and after concentrating by magnetite and gravitation methods; mathematical modeling of processes; technological testing in laboratory and industrial conditions. Results. Magnetic and gravitation separation is used for hematite ore concentration. Sintering ore with Fe content of 55.1% and concentrates of 62.32-64.69% Fe have been produced from hematite ore. Iron extraction in marketable products makes up 73.6-80.49%. Conclusions. There have been developed technologies for dry and wet concentration for hematite quartzites of Kryvyi Rih Iron Ore Basin. For the first time, magnetic separation has been suggested to be used for hematite ore concentration. This has enabled producing concentrates with an iron content over 64.0%, decreasing ore grinding front by at least 40% as compared with the initial one, and reducing operation and capital expenses by over 30%.

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Development of Concentration Technology for Medium-Impregnated Hematite Quartzite of Kryvyirih Iron Ore Basin

Nauka ta innovacii ◽

10.15407/scin16.06.056 ◽

2020 ◽

Vol 16 (6) ◽

pp. 56-72

Author(s):

M.I. Stupnik ◽

◽

V.V. Peregudov ◽

V.S. Morkun ◽

T.A. Oliinyk ◽

...

Keyword(s):

Iron Ore ◽

Fine Particles ◽

Research Data ◽

Mineral Analysis ◽

Problem Statement ◽

High Quality ◽

Iron Extraction ◽

Fe Content ◽

Hematite Ore ◽

First Time

Introduction. Trends in developing Ukraine’s metallurgy in the context of using its mineral raw base indicate prospects for mining hematite quartzite deposits. Problem Statement. The problem of producing high-quality hematite ore concentrates is associated with the fact that aggregates of martite, goethite, marshallit quartz, and other low hard minerals can be easily reground while crushing and grinding. This results in increased content of fine particles (slimes), which decreases selectivity of separating ore and non-metallic minerals. One of the ways to solve this problem is gentle ore grinding Purpose. Developing a technology of dry and wet concentration for hematite quartzite from Kryvyi Rih Iron Ore Basin. Materials and Methods. While conducting the research, a set of methods are used including generalization of research data; chemical and mineral analysis of ore and concentration products prior to and after concentrating by magnetite and gravitation methods; mathematical modeling of processes; technological testing in laboratory and industrial conditions. Results. Magnetic and gravitation separation is used for hematite ore concentration. Sintering ore with Fe content of 55.1% and concentrates of 62.32-64.69% Fe have been produced from hematite ore. Iron extraction in marketable products makes up 73.6-80.49%. Conclusions. There have been developed technologies for dry and wet concentration for hematite quartzites of Kryvyi Rih Iron Ore Basin. For the first time, magnetic separation has been suggested to be used for hematite ore concentration. This has enabled producing concentrates with an iron content over 64.0%, decreasing ore grinding front by at least 40% as compared with the initial one, and reducing operation and capital expenses by over 30%.

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Interference enhancement and modulation introduced by surface plasmon polaritons in a concentric-ring structure

10.1117/12.2199510 ◽

2015 ◽

Author(s):

Senfeng Lai ◽

Wen Wu ◽

Li Peng ◽

Wenhua Gu

Keyword(s):

Surface Plasmon ◽

Surface Plasmon Polaritons ◽

Ring Structure ◽

Concentric Ring ◽

Plasmon Polaritons

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Preparation of Iron Carbide from High Phosphorus Oolitic Hematite

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.881-883.98 ◽

2014 ◽

Vol 881-883 ◽

pp. 98-101

Author(s):

Guang Qiang Li ◽

Heng Hui Wang ◽

Jian Yang ◽

Jiang Hua Ma

Keyword(s):

Electron Microscope ◽

Scanning Electron Microscope ◽

Iron Carbide ◽

Xrd Analysis ◽

Raw Material ◽

Zonal Distribution ◽

High Phosphorus ◽

Hematite Ore ◽

Oolitic Hematite Ore ◽

Scanning Electron

In order to find a new way to utilize the high phosphorus oolitic hematite ore as raw material for steelmaking, the reduction and carburization of high phosphorus oolitic hematite by the gas of CH4-H2were studied. High phosphorus oolitic hematite, reduction and carburization products were investigated by the means of XRD and scanning electron microscope. The SEM-EDS and XRD analysis show that the main compositions of this ore are hematite and quartz, main microstructure is oolitic cluster with the zonal distribution of hematite and apatite, and iron carbide can be prepared from high phosphorus oolitic hematite.

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