Recovery of Iron values through conventional beneficiation techniques from Banded Hematite Jasper of Eastern India with special reference to mineralogical and chemical characterization

Nanda, S K; Pani, Santosh; Beura, D.

doi:10.17485/ijst/v13i38.681

Cited by 4 publications

(2 citation statements)

References 7 publications

(9 reference statements)

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“…To address this issue, hydrocyclones are employed as mineral processing equipment for classification and desliming based on particle size and specific gravity. In past, several researchers studied the potential of Indian low grade iron ore utilization by beneficiation (12)(13)(14)(15) . However very few of them addressed the effect of process parameters on desliming and its implications on separation efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…They did not study the effect of process parameters on hydrocyclone process and the effect of desliming on gravity separation process. Nanda et el (13) studied the beneficiation response of BHQ iron ore, however they fail to explain the process parameters related to hydrocyclone influencing the desliming process. 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 parameters but they were unable to answer the effect of desliming for the concentration of ores like BHQ and the concentration efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Hydrocyclone Process Parameters on Desliming of Low-Grade Indian Iron Ores with Respect to their Optimum Utilization

Nandanwar,

Pani

2023

IJST

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Objectives: To ascertain how desliming affects concentration efficiency of low-grade Indian iron ore and how hydrocyclone process parameters affect desliming effectiveness of low-grade iron ores for their optimum utilization. Methods: Low grade Indian iron ores viz high aluminous type slime (sample A) and siliceous type BHQ (sample B) assaying 56.3% Fe, 7.64% SiO 2 , 5.14% Al 2 O 3, 5.34% LOIand 40.5% Fe, 40.6% SiO 2 , 0.7% Al 2 O 3 , 0.5% LOI are used for this study. The samples undergo beneficiation study by employing the techniques like desliming followed by gravity and magnetic separation for the recovery of iron values. Findings: Two ores appear to behave differently depending on the process parameters. Desliming followed by gravity separation of the ores increases the separation efficiency of the concentration process for both sample A and sample B. Improved iron recovery and grade observed in case of desliming-cum-gravity separation than that of direct gravity separation. The particle size and mineral are dominating the separation response in case of iron ore slime sample A, while in BHQ sample B the dominating factor is particle size only. The grade of deslimed product (hydrocyclone underflow) increased in case of sample A. The grade of deslimed product did not increase in sample B but the particle sizes are more segregated. sample A can be processed to produce an iron ore concentrate with a 65% Fe content and weight(%) recovery of 42 by adopting desliming followed by gravity separation techniques. An iron ore concentrates of 64% Fe with 25 weight (%) recovery can also be obtained from sample B by adopting the same. Novelty & Application: Present investigation establishes the response of different low grade ores in terms of separation with and without desliming. Desliming before concentration will be an easier decision resulting in efficient separation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Hydrocyclone Process Parameters on Desliming of Low-Grade Indian Iron Ores with Respect to their Optimum Utilization

Nandanwar,

Pani

2023

IJST

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Resource Management and Utilization of Lean Grade Iron Ore Resources of Karnataka, India

Swamy

Suresh

Kumar

2022

jmmf

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As per the National Steel Policy 2017, more than 300 million tons of steel needs to be produced by 2030, to meet the increased demand due to the tripling of per capita consumption of steel in India. Accordingly, the local steel production from the Ballari steel hub of Sandur schist belt is expected to be raised from present 25 million tons per year to 60 million tons per year by 2030, thus necessitating 150 million tons of high grade hard lumpy/pellets for domestic Ballari steel hub alone excluding long term export commitments. Hence, a strategy for processing lean grade iron ores to augment the demand of high-grade iron ores for metallurgical applications is studied. A composite mixed Banded Hematite Quartzite (BHQ) from different ranges of Sandur schist belt, Ballari district, Karnataka, India was subjected to characterization, mineral processing and palletization studies to produce pellets Fe > 62.5 %, (SiO2+ Al2O3)2, 1.00 % Al2O3and 1.06 % LOI, comprising fine grained (<70 ?) mainly hematite [55–60%], very fine grained (<40 ?) quartz [35- 40%] and fine grained (<70 ?) minor amounts of martitized magnetite [1–5%], which are mutually intimately intermixed and intergrown, was subjected to beneficiation. The BHQ is amenable to gravity concentration by tabling reverse flotation, and WHIMS produces pellet grade concentrates. The final conventional process comprising gravity concentration, followed by magnetic separation of gravity tails and refining of magnetic fractions by reverse flotation. The final concentrate has produced assaying 64.5% Fe, 6.32% SiO2, 0.29% Al2O3 and 0.63% LOI, with 73% Fe distribution, has met the pellet grade specification. The pellets produced from beneficiated iron ore concentrate is assayed 64.10 % Fe, 6.85 % SiO2, 0.42 Al2O3%. DRI could be produced from the pellets from which steel is produced paving the way for conservation, sustenance, and sustainable development with the viability of using BHQ of the Sandur schist belt.

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Processing Studies on Banded Hematite Quartzite’s of Sandur Sciht, Karnataka, India

2022

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The greater demand for high-quality iron ores has forced the iron and steel industries to utilize low-grade iron ores, such as banded hematite quartzite (BHQ). In the present work, a striped hematite quartzite sample from the Haraginadoni area, in the Sandur schist belt, Ballari District, Karnataka, India, was subjected to characterization studies and conventional mineral processing methods to produce pellet-grade concentrate, assayed as Fe > 63.0%, SiO2 + Al2O3 < 7%, (Al2O3/SiO2 < 0.5). The sample was analyzed as 35.70% Fe, 47.44% SiO2, 0.75% Al2O3, 0.06% Mn, 0.07% TiO2, 0.03% P, 0.02% S, and 0.83% LOI. We focused on two routes of beneficiating BHQ samples: (1) conventional gravity followed by reverse floatation and (2) magnetic separation followed by cleaning of magnetic concentrate by reverse floatation. Route 1, achieved pellet-grade concentrate through assaying, and was 63.73% Fe, 6.20% SiO2, 0.19% Al2O3, 0.03% Al2O3/SiO2, and 0.23% LOI, D80 45 µm, with 70.1% Fe recovery and 62.8% concentration efficiency at 39.6 wt% yield. Using Route 2, the process consisted of WHIMS at −74 µm, D80 54 µm, 10,000 Gauss, and with a 3 mm ball matrix, followed by flotation of the WHIMS concentrate, which produced a concentrate through assaying and was 63.34% Fe, 6.30% SiO2, 0.20% Al2O3 (0.03 Al2O3/SiO2), and 0.20% LOI with 77.4% Fe recovery, achieving a 68.8% concentration efficiency at 44.0 wt% yield, meeting pellet-grade specifications. Comparing and analyzing both routes for the concentration methods, Route 2, i.e., WHIMS and the reverse flotation of WHIMS concentrate, was amenable compared to Route 1.

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Recovery of Iron values through conventional beneficiation techniques from Banded Hematite Jasper of Eastern India with special reference to mineralogical and chemical characterization

Cited by 4 publications

References 7 publications

Effect of Hydrocyclone Process Parameters on Desliming of Low-Grade Indian Iron Ores with Respect to their Optimum Utilization

Effect of Hydrocyclone Process Parameters on Desliming of Low-Grade Indian Iron Ores with Respect to their Optimum Utilization

Resource Management and Utilization of Lean Grade Iron Ore Resources of Karnataka, India

Processing Studies on Banded Hematite Quartzite’s of Sandur Sciht, Karnataka, India

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