Keywords: high voltage electrical pulses, crushing, flotation, desulfurization, iron ore 1. Introduction In the last decades, due to the high consumption of iron ore in metallurgy industries, the demands for iron ore have been increasing (Saravari and Shayanfar, 2021). As the high-quality iron ores decrease
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Flotation is the most commonly used process for desulfurization of iron concentrates in iron beneficiation plants. The current study deals with improving the metallurgical performance of the flotation circuit at Sangan iron beneficiation plant. A plant survey indicated that sulfur content of iron concentrate is sometimes higher than that of the permitted limit used for the pelletizing …
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Various studies have been increasingly performed on the reduction of sulfur content of iron ores and concentrates. The presence of sulfur in these materials causes technical problems in steel and alloys and environmental issues in the sintering of iron ore process. The achievement of higher sulfur removal rates has been an important goal since the development of sulfur …
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The proper feed for the pelletizing plant must have iron and the Blaine number more than 67 % and 1900 cm 2 g -1 and sulfur content less than 0.1 %, respectively. In this work, the feasibility study of desulfurization process for iron ore used in the pelletizing plant was carried out in the fourth line of the Gol-e-Gohar Complex. Two methods were examined for desulfurization …
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The achievement of higher sulfur removal rates has been an important goal since the development of sulfur removal techniques. In this research, an effort is made to separately introduce the various processes, industrial practices, and fundamental research activities to remove sulfur from iron ores, concentrates, or roasted iron ores.
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The iron and steel industry is a pillar of the national economy and represents its degree of development [1].However, the insufficiency of high-quality iron ore resources seriously threatens the safety of the iron and steel industry [2].China, the world's largest iron ore consumer and steel producer, manufactured 1.018 billion tons of crude steel in 2022, about 53.93 % of …
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Desulfurization of hematitic concentrate of iron ore of the Gol-E-Gohar mine using reverse flotation method E. Panahi 1, A. Abdollahzadeh 2, A. Sam 3, M. Jahani 4, M. Yaghobi Moghaddam 4, A ...
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In this research, an effort is made to separately introduce the various processes, industrial practices, and fundamental research activities to remove sulfur from iron ores, concentrates, or …
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The results in optimal conditions indicated that column flotation was considerably efficient for iron ore desulfurization so that a high purity concentrate with the sulfur content of 0.08 % and ...
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Fine particle flotation has been one of the main problems in many mineral processing plants. Beneficiation of iron ore and phosphate slimes is important from economic and environmental aspects. This study aimed at the purification of fine particles of iron and phosphate ores by a pilot scale flotation column (10.2 cm diameter and 400 cm height) in which Nano bubbles (NBs) …
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Fire accidents, caused by spontaneous combustion of sulfide ore, occur frequently in sulfur-containing metal mines. Fire accidents will lead to casualties and equipment damage, resulting in heavy losses of economy and mineral resources (Li et al., 2004, Rosenblum et al., 2017).When the sulfur content of the ore is 15–20% or more, the ore may spontaneously …
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demand in metallurgy industries [1]. Due to the depletion of high quality iron ores, complex ultrafine iron ores with a high content of impurities, such as sulfur, have been processed [2]. Pyrrhotite (Fe1 xS) is a kind of common sulfide which exists in magnetite ore as an associated mineral with little industrial value.
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that column flotation was considerably more efficient than mechanical flotation for iron ore desulfurization so that a high purity concentrate with the iron recovery of 98%, can be obtained. Author
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3.4 Flotation desulfurization Flotation desulfurization is to use collectors to recover pyrite from bauxite [44âˆ'47]. The Ural Academy of Sciences of Soviet Union first adopted this method, in which sulfur content in the concentrate was found to drop from 2% to less than 0.41%, and the Al2O3 recovery was 99.17%.
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Most impurities are usually removed by cleaning and re-cleaning the concentrate. To investigate the feasibility of re-flotation, three flotation experiments were performed under … See more
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The content of sulfur in iron ore concentrate is the major problem of steel making industries. In this regard, the reverse flotation operation is used to reduce the amount of sulfur of the final ...
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In this work, the feasibility study of desulfurization process for iron ore used in the pelletizing plant was carried out in the fourth line of the Gol-e-Gohar Complex. Two methods were examined ...
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In this study, the desulphurization of iron ore concentrate using reverse flotation was investigated. In this paper first, behavior of the flotation of both pure – pyrite and iron …
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Keywords: high voltage electrical pulses, crushing, flotation, desulfurization, iron ore 1. Introduction In the last decades, due to the high consumption of iron ore in metallurgy industries, the demands for iron ore have been increasing (Saravari and Shayanfar, 2021). As the high-quality iron ores decrease over the years, impure iron-bearing ...
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The analysis of desulfurization efficiency and cumulative desulfurization amount showed that pretreatment of the ore samples with ultrasonic waves and microwaves could improve the microbial desulfurization effect of sulfide ores. Among them, the microbial desulfurization effect of the ore samples pretreated by ultrasonic
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Download scientific diagram | Flow sheet of flotation tests. from publication: The Desulfurization of Magnetite Ore by Flotation with a Mixture of Xanthate and Dixanthogen | The contamination of ...
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The high amount of sulfur in iron ores causes different problems in the production of iron concentrate, pelletizing (environmentally harmful emission of SO 2), and steel production processes (affects the quality of steel) (Singh et al., 2015).Sulfur causes the brittleness of steel at high temperatures, reducing the weldability of steel and its weight recovery due to the …
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Grinding process and fineness have been found as significant factors influencing the flotation desulfurization performance of high-sulfurous iron ore. Moreover, the separation tests of multi-stage grinding as well as direct one-stage fine grinding were conducted. ... (2005) 855â€"865. [7] A.C. Araujo, P.R.M. Viana, A.E.C. Peres, Reagents ...
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Iron ore flotation started with direct flotation of iron oxides using selected anionic collectors such as petroleum sulphonates, fatty acids and hydroxamates. ... It was also examined that a high desulfurization ratio was achieved with little loss of magnetite when mixture of xanthate and dixanthogen was used as collector.
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The raw ore, with a sulfur content of 4.78%, a sulfide sulfur content of 4.20%, a carbon content of 3.10% and an elementary substance carbon content of 2.46% goes through the "one roughing, one cleaning, two scavenging" process after a pre-decarburization, obtaining the total desulfurization recovery of 96.20% with a desulfurization tailing ...
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Alternatively, the desulfurization of iron ores through flotation leads to a notable loss of valuable minerals. Efforts to enhance efficiency through collector mixtures (Yu et al., 2016) traduce environmental concerns, such as the use of compounds like …
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The advantages and disadvantages of direct flotation, cationic reverse flotation, and anionic reverse flotation are reviewed. A novel stepped flotation technique is discussed for the treatment of carbonate-rich iron ores.
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The clean and efficient utilization of coal is a promising way to achieve carbon neutrality. Coking coal is a scarce resource and an important raw material in the steel industry. However, the presence of pyrite sulfur affects its clean utilization. Nonetheless, this pyrite could be removed using depressants during flotation. Commonly used organic depressants (sodium …
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The reverse flotation of the iron ore with etheramine collector is significantly impacted when the iron-bearing silicates and the kaolinite are present in the silicates gangue mineral complex. This paper aims to propose a new amidoamine collector N-[3-(Dimethylamino)propyl]dodecanamide for iron ore reverse flotation with a potential of removing ...
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