Iron ore tailing/slime (-150 μm) is produced after scrubbing and wet screening of a low-grade iron ore. Tailing beneficiation of iron ore has been addressed either by flotation or wet high intensity high gradient separation. The present study aims to recover iron values from discarded slime containing assay ~56% Fe, ~6.5% SiO 2, and ~7.0% Al 2 O 3
This work describes the concentration of iron ore slimes on a pilot scale by using a 500-mm diameter flotation column and a novel collector, which renders the use of a depressant unnecessary. The pilot column was operated in series with the industrial plant Vargem Grande 2 (Iron Quadrangle, Brazil) receiving, as feed, part of the underflow from the desliming thickener. …
In iron ore beneficiation plants, the spiral concentration technique is being used to obtain a fine concentrate. In spiral separators, the separation of heavy and light minerals takes place in streaming currents. ... Recently, Singh et al. used this technology for Barsua iron ore slime assaying 56% Fe and obtained an iron concentrate of 62.6% ...
Therefore, this work is aimed to experimentally study the iron ore slime beneficiation using a novel 100 mm hydrocyclone (with small cone angle, tapered vortex finder and optimum cylindrical ...
A typical high-alumina containing iron ore slime from the eastern Indian sector containing 58.13% Fe, 6.48% SiO2, 4.9 % Al2O3 and 5.35% LOI, have been evaluated to find out whether grinding of the ...
The selective flocculation process for iron ore fines and slimes using surface-active agents was found to be effective for enrichment of hematite in iron ore fines and slime. …
Iron ore tailing/slime (-150 m) is produced after scrubbing and wet screening of a low-grade iron ore. Tailing beneficiation of iron ore has been addressed either by flotation or wet high intensity high gradient separation. The present study aims to recover iron values from discarded slime containing assay ~56% Fe, ~6.5% SiO2, and ~7.0% Al2O3 ...
Beneficiation of low grade iron ore slime from Chitradurga, India was studied with a view to produce pellet grade fines. The slime sample had a feed grade of 49.86% total Fe, 7.93% Al2O3, and 10. ...
A Comparative Study on Processing of High Alumina Hematite Iron Ore by Gravity, Magnetic and Flotation Methods. Journal of Materials Science and Engineering 3, 349-354; Roy, S., Das, A., Mohanty, M. K. 2007. Feasibility of producing pellet grade concentrate by beneficiation of iron ore slime. Separation Science and Technology 42, 3271-3287.
The beneficiation tests on Bolani iron ore slime by hydrocyclone showed the possibility of upgrading the slime to 63.5%Fe, 1.8 Si02 and 2.8%A1203 with 31.1% product recovery from the slime feed assaying 53.71% Fe, 5.25% Si02 and 6.25% A1203 by 2 stage cycloning.
The natural slime sample from an iron ore mine in India used in this study was < 400 mesh (<37 micron). The chemical analysis of the slime sample assayed 58.5% Fe, 6.8% Al 2
ABSTRACT A typical high-alumina containing iron ore slime from the eastern Indian sector containing 58.13% Fe, 6.48% SiO2, 4.9% Al2O3, and 5.35% LOI, have been evaluated to find out whether grinding of the slimes will be beneficial or not for upgrading the slime to generate pellet-grade concentrate with >64% Fe. Liberation studies indicated that there is …
A typical high-alumina containing iron ore slime from the eastern Indian sector containing 58.13% Fe, 6.48% SiO2, 4.9 % Al2O3 and 5.35% LOI, have been evaluated to find out whether grinding of the ...
beneficiation studies of Iron ore slime from Karnataka, India through dispersion and selective flocculation in presence of surfactants and polymers with a view to produce pellet grade fines. The ...
A typical high-alumina containing iron ore slime from the eastern Indian sector containing 58.13% Fe, 6.48% SiO2, 4.9 % Al2O3 and 5.35% LOI, have been evaluated to find out whether grinding of the ...
The beneficiation of iron ore slime in the Brazilian scenario is a challenging task as it contains a significant amount of silicates, goethite and clay minerals (kaolinite and gibbsite) (Lima and Abreu, 2019). The iron ore slime could be a material generated during the desliming stage (overflow) containing particle sizes of approximately 99% ...
The study here highlights the optimization of beneficiation circuit for high-grade iron ore to attain higher productivity of both Pellet Plant and Blast Furnace with the least amount of rejections. ... Nayak B, Konar J (2017) Beneficiation of high-alumina bearing iron-ore slime: A case study from eastern India. Mineral Process Extract Metall ...
The hydrocyclone process parameters for iron ore slime beneficiation were recently researched by the researchers Padhi et al. (17), although they only concentrated on hydrocyclone design and flow ...
Therefore, this work is aimed to experimentally study the iron ore slime beneficiation using a novel 100 mm hydrocyclone (with small cone angle, tapered vortex finder and optimum cylindrical ...
Beneficiation studies of iron-ore fines and slime have been made to ascertain the selectivity of chemical additives with or without stabilizing agents and/or calcium ion for alumina removal.
The iron ore slime sample used in this study was procured from a beneficiation plant of a working mine in central India.. The chemical composition shown in Table 1 demonstrates that the sample is rich in iron values along with silica and alumina. The XRD spectrum of slimes shown in Fig. 1a reveals hematite as the major phase along with some …
A similar type of characterization also reveals the presence of quartz and kaolinite as major gangue phases of iron ore slime . 3.5. SEM and EDX of the Dispersed Phase. The iron ore beneficiation waste of slime (DPAD200) was also characterised by SEM with EDX spectra and is shown in Figure 13. Further, we noted that the morphology of other ...
Size wise chemical analysis of iron ore slime from Joda, India is presented in Table 1. From the Table 1, D50 of the slime is around 25-20 microns, which is very fine. Around 50% of the slimes are present in <25 Micron fractions having 58.28 % Fe and 4.76% SiO 2 and 3.43% Al2O3. Table 1: Size wise chemical analysis of Joda iron ore slimes
In India there are many iron ore mines which continue to generate huge amount of slimes . The iron ore slimes contain high level of undesirable minerals which are dumped in storage ponds, called slime ponds. It is estimated that a typical iron ore slime contains 54 % iron and some other gangue minerals such as SiO 2, Al 2 O 3, P 2 O 5, TiO 2, MgO
Chemically treated iron ore slime is suitable for iron production using blast furnace whereas the elemental iron produced by electrowinning can be used directly for steelmaking.
Since the plant is shutdown, the beneficiation of iron ore i n India . ... of iron ore slime produce d from washing plants and t ailing ponds of Kirib uru mines . was studied (19) ...
The iron ore slime sample under study from Barsua mines of India contains 56% Fe, 4.8% SiO 2, 7.2% Al 2 O 3 and 7.0% LOI. Initially, the effect of magnetic intensity on different particle sizes without any addition of coating material was investigated. ... Studies on the beneficiation of Indian iron ore slimes using the flotation technique ...
Therefore, this work is aimed to experimentally study the iron ore slime beneficiation using a novel 100 mm hydrocyclone (with small cone angle, tapered vortex finder and optimum cylindrical ...
The friable nature of Indian iron ore causes lots of fine generation during mining and subsequent stages. In conventional processing of 1 ton of Iron ore, 10–15% slime …
A typical high-alumina containing iron ore slime from the eastern Indian sector containing 58.13% Fe, 6.48% SiO 2, 4.9% Al 2 O 3, and 5.35% LOI, have been evaluated to …
The proportion of iron ore slime to ROM will increase in the future, with a higher proportion of lean-grade ores in ROM. Furthermore, tonnages of iron ore slime will increase with increasing demand of iron concentrate. Presently, this slime is stored in a dam in the absence of beneficiation technology. A beneficiation flowsheet was developed at ...
The iron ore slime is discarded due to its particle size and chemical composition which are not suitable as feed to the blast furnace. Although the fines/slimes can be agglomerated to larger particle, the alumina to silica ratio which is normally more than one poses serious problem during sintering process and subsequent smelting in blast ...
The present research work has been conducted to remove gangue contents from rejects slime of iron ore, having particle size < 20 µm by circulating leaching with aqueous hydrofluoric acid (HF) followed by nitric acid (HNO3) washing. Effects of acid concentration, slurry ratio, reaction time, stirring speed and temperature on gangue removal have been examined. The gangue …
In general, the industrial flowsheets for the beneficiation of itabirite iron ores from the Quadrilátero Ferrífero (Minas Gerais state) in Brazil involves grinding, desliming, magnetic …
Request PDF | Optimization study of hydrocyclone for beneficiation of iron ore slimes. | Hydrocyclone is a key unit operation in mineral-processing industry for beneficiation of mineral values ...
Managing Iron Ore Fines and Slimes Beneficiation has a major role to play in utilisation of low grade ore and fines in iron making. It will help in conservation of mineral wealth and mitigation of adverse impact ... slime beneficiation circuit will consist of hydro-cyclones, magnetic separators, ball mills and concentrate thickeners. Since the ...
In order to assess the possibility of re-covering iron values from these slimes, Research and Development Division of NMDC took up the beneficiation studies with the slimes of Bailadila …
Beneficiation studies of iron-ore fines and slime have been made to ascertain the selectivity of chemical additives with or without stabilizing agents and/or calcium ion for alumina removal.
As per the guidelines of IBM the iron content in the tailing should be below 45%. In view of the above, CSIR-NML had undertaken study on characterization and beneficiation study of iron ore slime from eastern part of India and developed process technology for …