Beneficiation of alumina rich iron ore slimes is a major challenge for the Indian iron ore industry. Considering the limits of gravity and magnetic separation processes in the relatively finer ...

Abstract 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, … Expand. 33. Save. CHARACTERIZATION AND PROCESSING OF LOW-GRADE IRON ORE SLIME FROM THE JILLING AREA OF INDIA.

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 ...

Iron ore slimes beneficiation using optimised hydrocyclone operation. 2022, Chemosphere. Show abstract. With increasing steel production, an exponential increase in demand for steel is rapidly depleting the high-grade iron ore deposits. Hence, in search of an alternative source of iron ores, the steel industries are forced to use low-grade ores.

Present investigation includes the magnetizing roasting of low-grade iron ore fines followed by grinding and beneficiation using magnetic separation. The hematite iron ore used in the investigation contains 53.17% T Fe, 10.7% SiO2, and 4.5% Al2O3. Powdered bituminous coal of 210 μm size with an ash content of 12.5% and fixed …

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 …

Proposal of methods for beneficiation of iron ore slimes. 5 LITERATURE REVIEW CHAPTER-2 . 6 2. LITERATURE REVIEW 2.1 Main types of iron ores Most prominent ore found in India are mainly hematite and magnetite. Among these, hematite is considered to be most important. Iron ore is used in production of pig iron which

The present paper describes 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 ...

Iron ore washing plants generate slimes in significant volumes, which need to be treated for meeting the raw material demand as well as environmental mitigation. Selective flocculation, an emerging fines beneficiation route, has been chosen for the upgradation of Barsua iron ore slimes. Characterization studies revealed that the …

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. A phenol-based additive gives better stability of the suspension than a lignite-based additive.

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 …

and silica in iron ore leading to slime generation which are disposed off in tailing ponds. Slime in these tailing ponds contains iron values in the range of 45 - 60 %. Appropriate ... slimes generated during beneficiation contain an iron value of 40-55%, which are being discarded till now and is dumped in mines heads. Significant quantity of ...

FTIR test was performed on iron ore slime sample to find out the presence of functional groups. The FTIR spectrum of iron ore slime is shown in Fig. 3. It is reported in the literature that peaks around 410–415, 450–470, and 670–680 cm −1 showed the presence of hematite.

The typical iron ore beneficiation includes gravity concentration, magnetic separation, and froth flotation techniques for the concentration of iron values [4, 5, 6]. ... Viability of dolochar as a reductant was examined to treat iron ore slime in the reduction roasting process. The optimum conditions obtained as 900 °C, 30–45 min residence ...

Bolani iron ore slime containing 53% Fe, 9.56% Al 2 O 3 and 6.14% SiO 2 was subjected to bio-beneficiation studies. In situ leaching by A. niger removed about 38% of alumina in 15 days, while B. circulans could removed 39% of alumina after six days at 10% pulp density. Culture filtrate leaching with A. niger removed 20% alumina with 13 …

Beneficiation of alumina rich iron ore slimes is a major challenge for the Indian iron ore industry. High alumina is deleterious for the performance of both blast furnace as well as sintering plants.

The present investigation examines the viability of dolochar, a sponge iron industry waste material, as a reductant in the reduction roasting of iron ore slimes, which are another waste generated by iron ore beneficiation plants. Under statistically determined optimum conditions, which include a temperature of 900°C, a reductant-to …

The beneficiation of iron ore slimes by selective flocculation was studied. Polyacrylamide (PAM) and guar gum were used as flocculant, along with sodium hexametaphosphate (SHMP) as a dispersant.

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

BR holds similarities to iron slimes generated after iron ore beneficiation. Iron slimes has hematite as the main iron host phase (35 -45 % Fe), a fine particle size distribution (99 % < 45 µm ...

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 …

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DOI: 10.1007/s41403-020-00155-1 Corpus ID: 225510551; Modeling and Optimisation of Spiral Concentrator for Beneficiation of Iron Ore Slimes from Kirandul, India @article{Rao2020ModelingAO, title={Modeling and Optimisation of Spiral Concentrator for Beneficiation of Iron Ore Slimes from Kirandul, India}, author={G. V. Rao and Basant …

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 iron ore slimes (d80 ∼ 50 µm) generated at Noamundi iron ore washing plant (TISCO), assaying 57% Fe, 4% SiO2 and 8.3% Al2O3, have been subjected to hydrocyclone studies. The effects of different design and operating parameters have been studied to get a product suitable for subsequent use in the sinter mix. The studies …

Prasad et al. (1988) have studied iron ore slimes processed by magnetic separation at the Kiriburu mines in India. A c oncentrate containing 63% Fe and 3.3% Al 2 O 3 with an iron recovery of

The beneficiation of low-grade iron ore slimes might be a possible solution for the sustainable development of the iron ore industry. The presently dumped slimes have been rejected after washing ...

Beneficiation of alumina rich iron ore slimes is a major challenge for the Indian iron ore industry. High alumina is deleterious for the performance of both blast furnace as well as sintering plants.

Performance Evaluation of Iron Ore Slime Beneficiation circuit for recovering Iron values from Lean tailings at MPT2019. ... iron ore slimes assayed 52.55% Fe with 10.8 % SiO2 and 9.3% Al2O3. The ...

Hydrocyclone is a key unit operation in mineral-processing industry for beneficiation of mineral values that uses centrifugal force to separate materials by density or size. ... respectively, for a iron ore slime sample containing 57.84 Fe, 6.0% Al 2 O 3, and 6.7% of SiO 2. Keywords: design of experiment; hydrocyclone; iron ore slimes ...