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

2013 ◽  
Vol 712-715 ◽  
pp. 743-747
Author(s):  
Zhi Qiang Rao ◽  
Yu Shu Zhang ◽  
Yong Chao Jin
Keyword(s):  
Fine Particles ◽  
Separation Efficiency ◽  
Ring Structure ◽  
Reverse Flotation ◽  
Silicate Minerals ◽  
Iron Minerals ◽  
Mineral Compositions ◽  
Hematite Ore ◽  
Cationic Collector ◽  
Oolitic Hematite Ore

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.

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

2013 ◽  
Vol 303-306 ◽  
pp. 2713-2716 ◽  
Author(s):  
Zhi Qiang Rao ◽  
Yu Shu Zhang ◽  
Yong Chao Jibn
Keyword(s):  
Iron Ore ◽  
Fine Particles ◽  
Separation Efficiency ◽  
Ring Structure ◽  
Concentric Ring ◽  
Hematite Ore ◽  
Cationic Collector ◽  
Oolitic Hematite Ore

Oolitic 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. 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.

Test Research on HIMS-Reverse Flotation of Oolitic Hematite of Longyan Iron Mine

2013 ◽  
Vol 753-755 ◽  
pp. 24-27 ◽  
Author(s):  
Shu Xian Liu ◽  
Jin Xia Zhang ◽  
Miao Chen ◽  
Zhi Shuai Xu
Keyword(s):  
Magnetic Separation ◽  
Reverse Flotation ◽  
Test Results ◽  
Flotation Reagents ◽  
High Gradient Magnetic Separation ◽  
Iron Concentrate ◽  
Iron Mine ◽  
Hematite Ore ◽  
Reverse Floatation ◽  
Oolitic Hematite Ore

In order to better exploit and utilize the oolitic hematite ore resource in Zhangjiakou region, staged grinding-separation process consisting of high intensity magnetic separation(HIMS) and reverse floatation was adopted in the beneficiation test on the regionally representative oolitic hematite ore of Longyan Iron Mine, Xuan Stee1. The test results indicate that，with Slong pulsating high gradient magnetic separation as HIMS equipment，with NaOH，starch，CaO and TS as flotation reagents，and at a grind of 65％ -200 mesh for the primary grinding and 95％-200 mesh for the secondary grinding，an iron concentrate grading 62.34％ and having an iron recovery of 53.07％ can be achieved after two stage HIMS and one roughing—one cleaning reverse flotation.

Selective Flocculation of Fine Grain Oolitic Hematite Behavior Research

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.

Study on Dispersion Behaviors of Oolitic Hematite Ultrafine Particles in Water

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.

Process Mineralogy of an Oolitic Hematite Ore and its Implications for Mineral Processing

2012 ◽  
Vol 567 ◽  
pp. 131-134 ◽  
Author(s):  
Hui Xin Dai ◽  
Wei Zhao ◽  
Li Kun Gao ◽  
Bao Xu Song
Keyword(s):  
Magnetic Separation ◽  
Mineral Processing ◽  
Processing Technology ◽  
Magnetic Intensity ◽  
Sw China ◽  
Iron Minerals ◽  
Mineralogical Study ◽  
Process Mineralogy ◽  
Hematite Ore ◽  
Oolitic Hematite Ore

Based on process mineralogical study of an oolitic hematite ore in SW China, the texture and structure of the ores, the occurrence of iron minerals and the dissemination of them are determined in detail, which provides scientific reference for forthcoming mineral processing technology. The mineralogical results show that the sizes of the grains are generally under 0.01mm, so the minerals cannot be liberated completely by traditional grinding technology. Moreover, the objective minerals are the assemblages of hematite and chlorite, whose amount is highly variable, so the magnetism also varies widely. Therefore, during the coming magnetic separation tests, the increment of the magnetic intensity should be strictly manipulated to determine the best condition for the ores.

Study on Dispersion Character of Fine Oolitic Hematite Ore Particle

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.

Preparation of Iron Carbide from High Phosphorus Oolitic Hematite

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.

Phase transformation in suspension roasting of oolitic hematite ore

2015 ◽  
Vol 22 (12) ◽  
pp. 4560-4565 ◽  
Author(s):  
Yan-jun Li ◽  
Ru Wang ◽  
Yue-xin Han ◽  
Xin-chao Wei
Keyword(s):  
Phase Transformation ◽  
Hematite Ore ◽  
Oolitic Hematite Ore

Cyclic Flow Experiments of a Fine Particle Separation Hydrocyclone

2007 ◽  
Author(s):  
Lixin Zhao ◽  
Minghu Jiang
Keyword(s):  
Flow Condition ◽  
Fine Particle ◽  
Fine Particles ◽  
Separation Efficiency ◽  
Amplitude Ratio ◽  
Particle Separation ◽  
Separation Performance ◽  
Period Ratio ◽  
Cyclic Flow ◽  
Signal Type

Basic separating principle of hydrocyclones and the cyclic experimental research facilities are introduced. The difficulty of separating fine particle is described. Based on a solid-liquid hydrocyclone used for separating fine particles, effect of cyclic flow condition on hydrocyclone’s performance is studied. Effects of cyclic period ratio, cyclic flowrate amplitude ratio, Reynolds number, gas liquid ratio, and the cyclical signal type on the hydrocyclone’s fine particle separation performance, especially on relative overflow purifying rate were studied in detail. The results show that the separation efficiency of the hydrocyclone operated under cyclic flow condition can be higher than that in steady condition, when the cyclic period ratio is about 0.68 and the cyclic flowrate amplitude ratio is about 2%. Rectangular wave seems to be the best cyclic signal for enhancing the hydrocyclone’s separation efficiency. The cyclical change of flowrate leads to the increasing of hydrocyclone’s energy consumption to some extent, while the increasing amount is very less, which is no more than 3% in general.

Effect of Siderite on Reverse Flotation of Dong Anshan Iron Ore Containing Carbonates

2012 ◽  
Vol 455-456 ◽  
pp. 91-96 ◽  
Author(s):  
Li Xia Li ◽  
Wan Zhong Yin ◽  
Dan Feng ◽  
Bin Zhang
Keyword(s):  
Adverse Effect ◽  
Sodium Oleate ◽  
Iron Ore ◽  
Reverse Flotation ◽  
Carbonate Minerals ◽  
Flotation Agents ◽  
Iron Minerals ◽  
Effect Mechanism ◽  
Mineral Flotation

The content of carbonate minerals in Dong Anshan iron ore was increasing in recent years, which deteriorated reverse flotation indices or even resulted in unclear separation between concentrate and tailing. In dodecylamine and sodium oleate systems, reverse flotation tests were undertaken with artificial mixed minerals of martite, quartz and siderite. Based on mineral flotation tests, the effect mechanism of siderite on reverse flotation were investigated in terms of SEM and EDS. Results showed that siderite was weakly depressed by starch, and the adsorption of siderite on hematite and quartz was the main cause for reverse flotation difficulties. In reverse flotation in dodecylamine system, the adverse effect of siderite on reverse flotation could be reduced when the amount of starch increased, and iron minerals and quartz were separated effectively. Therefore, the reverse flotation in dodecylamine system could be considered to realize separating effectively iron minerals and quartz of Donganshan iron ore containing carbonates, but which had high requirements on pH. Other methods were siderite being separated prior to reverse flotation or inventing flotation agents capable of effectively activating or depressing siderite.

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