- منطقة بودونغ الجديدة ، شنغهاي ، الصين .
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The present study was an attempt to find alternative uses of goethite rich iron ore, usually not used as raw material for iron extraction, as an adsorbent for removal of anionic contaminants from water. Mineralogical characterization by optical microscope, XRD revealed the presence of substantial amount goethite in the iron ore which was also …
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Detailed characterization followed by beneficiation of low-grade iron ore slime from Jilling Langalota deposit, India, was studied. The work involved separating the gangue minerals viz. quartz and kaolinite to form iron-bearing minerals, mostly hematite and goethite, as identified using XRD analysis to produce a suitable concentrate for downstream …
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The process of sinter making originated from a need to make use of fines generated in mines and in ore bene-fiCiation plants. With the development of sintering technology, a sintering plant has become a tremendous success for providing a phenomenal increase in prod-uctivity and saving in coke rate to the blast furnace. The …
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This paper presents an Infrared (IR) thermography-based non-invasive technique for the faster gradation of iron ores, taking into account the variation in thermal absorptivity of the ore constituents. Iron ore samples from the Joda, Noamundi and Barsua mines, with Fe contents ranging from 52 to 67 wt.%, were selected and crushed to around 10 mm ...
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India ranks as the sixth largest producer of iron ore in the world. The current practice of washing iron ore in India generates as high as 18 million tonnes of tailings per year. These tailings are stored in massive ponds and pose environmental hazards. Safe disposal or utilisation of these materials thus remains a challenging task for the iron ore industry in …
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The present practice of beneficiation of iron ores in India produces lumpy ores (for blast furnace), classifier fines (for sinter plant) and slimes (Below 150 mm) which are stored in tailings pond. the estimated generation of slimes is 10-25% of the iron ore mined amounting to 18 million tonnes per year. Besides the loss of iron ore mined amounting …
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India ranks as the sixth largest producer of iron ore in the world. The current practice of washing iron ore in India generates as high as 18 million tonnes of tailings per year. These tailings are stored in massive ponds and pose environmental hazards. Safe disposal or utilisation of these materials thus remains a challenging task for the iron ore industry in …
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The depletion of high grade iron ore and increased generation of fines during mining and handling and demand for high grade iron orefines for export has necessitated the processing of low to medium grade fines. The R&D efforts undertaken at NML-Madras Centre, India in this direction have been highlighted. Beneficiation of iron ores in general ...
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Maranga, S M and Bett, Alvin Kiprono and Ndeto, Kyalo and Bett, Gilbert (2013) Kenyan Iron Ore: Mining and prospects of Processing. In: Proceeding of the International Conference on Science and Technology of Ironmaking and Steelmaking, December 16-18, 2013, CSIR-NML Jamshedpur.
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The paper deals with the study of composite pre-reduced pellets prepared using mixture of iron ore fines and non coking coal with bentonite and cement as binders. The iron ore fines from sandur area analysing 66.80% Fe, 1.72% Si0„ 1.34% X41,03 and 0.043% P has been used for the purpose.
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Gravity concentration process is the oldest beneficiation method known to mankind. This is a physical process and exploits the differences in densities of minerals to bring about a separation. Although with the advent of froth flotation, the relative importance of gravity concentrat-ion has declined in twentieth century but still on an average higher tonnage …
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Metal Exraction & Recycling Division is one of the main research division actively involved in fundamental research, providing technical services to various industrial needs, solving industrial problems as well as developing new processes, technologies and p roducts for commercial uses. The division comprises of three groups as following:
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Rao, D S and Bhaskar Raju, G and Prabhakar, S and Subba Rao, S and Vijaya Kumar, T V (2009) Mineralogy and Geochemistry of a low grade iron ore sample from Bellary-Hospet sector, India and their implications on beneficiation. Journal of Minerals & Materials characterization & Engineering, 8 (2). pp. 115-131.
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The present investigation deals with the recovery of iron values from the screw classifier overflow slimes from an iron ore washing plant by means of reverse cationic flotation as an alternate to direct anionic flotation. Selectivity index, an indicator of separation efficiency, was chosen as the response parameter for optimizing the quantity and evaluating a …
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India is one of the leading producers of iron ore in the world. According to the National Steel Policy-2005, India aims at 110 million tons (Mt) of finished steel production from the current level of approximately 40 Mt by the year 2019-20 (IMYB, 2008). To produce 110 Mt finished steel, around 170 Mt of quality iron ore (+63%Fe) is required.
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Because of the fast depletion of high grade iron ores and increased industrial demand, low grade iron ores which have hither to been unused, have become a focus of interest in recent years. Thus, the objective of the present study is to beneficiate lean iron ore fines from Goa for utilization in metallurgical plants. The feed sample assayed 44.25% Fe, …
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The first of these is the Jilling-Langalota deposit, hosted by banded iron formations along with generations of shales, tuffs belonging to Iron Ore Group of Eastern India and is hosted in the Singhbhum-North Orissa Craton. The second group of ores is from the Chitradurga basin in Eastern Dharwar Craton, Southern India.
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The paper deals with the results of characterisation and benefi ciations studies undertaken on two low-grade Indian iron ore samples (IO-1 and IO-2) with a view to develop process for benefi ciation of composite of the two samples to a high-grade concentrate, suitable for iron making through pelletisation. Indian iron ores contain relatively high iron but cost …
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Rath, R K and Mohanty, S and Mohanta, M K and Singh, Ratnakar and Bhattacharyya, K K (2010) Efficacy of enhanced gravity separator in processing indian iron ore slime. In: Proceedings of the XI International Seminar on Mineral Processing Technology (MPT-2010), Dec 2010, NML Jamshedpur, India.
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The important problem faced at present by the iron ore mining industry in India have been high–lighted. Beneficiation studies carried out with representative samples of various Indian iron ores have shown that scrubbing followed by wet–screening is absolutely necessary to solve the ore handling and screening problems, encountered in all the iron ore mines in …
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National Mineral Development Corporation(NMDC) is premier mining organisation field of iron ore mining in India. The activities of NMDC for the last 25 years broadly relate to explore, develop and exploit mineral resources, mainly iron ore of the country and has so far produced nearly 100 million tonnes of iron ore by mechanised mining.
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