A review on the enrichment of iron values of low-grade Iron ore resources using reduction roasting-magnetic separation

Iron ore is generally transported using a traditional method that releases significant amounts of dust into the environment. In contrast, the pipeline transportation of slurry is noticeably a sustainable approach for efficiently transporting iron ore by reducing the environmental pollution. The interparticle interaction of the iron ore particles should be mutually repulsive for steady dispersion. Surfactants and polymers adsorb efficiently at the solid/liquid interface due to their amphiphilic character, rendering the surface hydrophilic or hydrophobic to create a stable dispersion. The present review discusses the interaction of surfactants on the stabilization of solid particles for the ease of pipeline transportation using various types of stabilization mechanisms. In addition to the effect of surfactant alone, its combination with some other parameters such as particle size distribution, temperature, solid concentration, etc. has been discussed. The review also describes the detailed classification of iron ore, surfactant, and characteristic properties of surfactants.

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“…For efficient transportation, it is necessary to remove the gangue from the ore before transporting the IO. 48 …”

Section: About Iron Orementioning

confidence: 99%

Influence of Surfactant for Stabilization and Pipeline Transportation of Iron Ore Water Slurry: A Review

Behari

Das²,

Mohanty

2022

ACS Omega

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“…It is well known that the successful applicability of the physical beneficiation methods highly depends on the mineralogical characteristics of the iron ores [1] and the phosphate flotation is strongly influenced by the mineralogical composition of the phosphate ore [7,17]. Therefore, mineralogical and chemical characterization of raw ore was carried out before beneficiation tests.…”

Section: Characterization Of the Orementioning

confidence: 99%

“…Physical methods such as gravity concentration, magnetic separation and flotation are standard practices to separate the gangue minerals from iron ores. However, the ores having ferromagnetic nature are suitable for being processed using magnetic separation methods [1]. For example, magnetite (Fe3O4) is the most ferromagnetic of all the naturally occurring minerals on earth, and therefore low-intensity magnetic separators are widely used to upgrade magnetite ores.…”

Section: Introductionmentioning

confidence: 99%

Enrichment of Apatite-Bearing Iron Ore by Magnetic Separation and Flotation

Birinci¹

2021

European Journal of Technic

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In this study, enrichment possibility of apatite-bearing iron ore sample was investigated to obtain iron and phosphate concentrate, separately. It was determined that the raw ore contains 35.75% Fe and 5.36 P2O5. Magnetite in the ore can be enriched with low-intensity magnetic separator, and apatite can be enriched from the non-magnetic product by flotation. For this purpose, the raw ore was ground below 106 m size and then subjected to magnetic separation (with two cleaner and one scavenger), and following flotation (with three cleaner and one scavenger). According to the experimental result, a magnetic concentrate containing 63.55% Fe and 1.65% P2O5, and phosphate concentrate containing 25.33% P2O5 and 6.45%Fe were obtained. The results show that there are still difficulties to obtain plausible iron and phosphate concentrates in terms of phosphorus and iron impurities for iron and phosphate concentrate, respectively. It is concluded that it is hard to separate the iron and phosphorus phases from each other, possibly due to complex mineralogical composition and poor mineral liberation of the ore.

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“…Consequently, in the industrial production of refractory weakly magnetic minerals, HGMS is usually applied in the first separation stage to produce a rough concentrate, and other subsequent separation processes are still required to obtain the final concentrate. Various combined separation processes such as HGMS flotation, , HGMS gravity separation, and HGMS magnetic roasting–weak magnetic separation , are generated. However, these combined separation processes typically have the defects of a long flowsheet, high energy consumption, environmental pollution by flotation chemicals, or greenhouse gas (CO 2 ) emission.…”

Section: Introductionmentioning

confidence: 99%

Significantly Improved Separation Efficiency of Refractory Weakly Magnetic Minerals by Pulsating High-Gradient Magnetic Separation Coupling with Magnetic Fluid

Zheng

Jing

Sun

et al. 2022

ACS Sustainable Chem. Eng.

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High-gradient magnetic separation (HGMS) is indispensably applied in the rougher separation stage of refractory weakly magnetic minerals. The most difficult problem while processing refractory weakly magnetic minerals is the low selectivity of HGMS caused by the competing capture of magnetic valuable and gangue minerals. In this study, a paramagnetic fluid is introduced into HGMS and an innovative method, termed highgradient magnetic separation coupling with magnetic fluid (HGMSCMF), with a significantly high selectivity is proposed. A new competing force (magnetic repulsive force) generated by the magnetic fluid will enlarge the force difference of valuable and gangue minerals and improve selectivity. The relative magnetic force acting on the magnetic valuable and gangue minerals can be adjusted by varying the fluid volume susceptibility, with the optimal fluid susceptibility approaching that of gangue minerals. HGMSCMF experiments on an ilmenite ore using paramagnetic MnCl 2 solutions showed that the selectivity was remarkably improved by increasing MnCl 2 concentrations (fluid susceptibility). The TiO 2 grade and mass of magnetic products could be simultaneously improved by increasing the applied induction in HGMSCMF, whereas in conventional HGMS, the TiO 2 grade and recovery decreased and increased, respectively. HGMSCMF is applicable to various matrices (or separators), and a significantly improved TiO 2 grade (close to that of industrial concentrates) could be obtained with only one-stage HGMSCMF. The recycling of magnetic fluid and cost economy of HGMSCMF are also discussed and analyzed. HGMSCMF presents several advantages over conventional HGMS and has great application prospects for realizing the clean and efficient utilization of refractory weakly magnetic minerals or materials.

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A review on the enrichment of iron values of low-grade Iron ore resources using reduction roasting-magnetic separation

Cited by 145 publications

References 91 publications

Influence of Surfactant for Stabilization and Pipeline Transportation of Iron Ore Water Slurry: A Review

Influence of Surfactant for Stabilization and Pipeline Transportation of Iron Ore Water Slurry: A Review

Enrichment of Apatite-Bearing Iron Ore by Magnetic Separation and Flotation

Significantly Improved Separation Efficiency of Refractory Weakly Magnetic Minerals by Pulsating High-Gradient Magnetic Separation Coupling with Magnetic Fluid

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