The desulfurization of iron ore concentrate by the column flotation process is highly nonlinear and complicated . The main objective of the current study was to combine image analysis methods with an intelligent predictive model such as NN to forecast the amount of sulfur removal from the iron ore concentrate.
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The results suggest that the proposed soft sensor model can accurately predict the silicate content in the iron ore flotation concentrate using machine learning algorithms. Moreover, the study highlights the importance of selecting appropriate algorithms for soft sensor developments in mineral processing plants. eISSN: 2084-4735. ISSN: 1643-1049.
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Request PDF | Evaluation of column flotation froth behavior by image analysis: effects of operational factors in desulfurization of iron ore concentrate | Flotation performance is expected to be ...
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The flotation desulfurization process is simpler, less investment and higher utilization of resources. Therefore, flotation process is more suitable for high-sulfur bauxite desulfurization . In this study, the high-sulfur bauxite was used as raw materials and the flotation was applied to separating sulfur minerals from bauxite.
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Systematic magnetic separation-demagnetization-combined activation reverse flotation desulfurization experiments were carried out on a magnetic concentrate with the iron grade of 55.61% and the sulfur grade of 3.81% whose main sulfide ores are pyrrhotite and pyrite. The test results showed that the sample was subjected to a weak …
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The obtained iron concentrate reaches 64.28% Fe and 0.42% S respectively with iron recovery of 53.62% and desulfurization rate of up to 90%. ... the feasibility study of desulfurization process ...
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The final concentrate with the grade of sulfur 0.07 %, iron 70.3 % and the Blaine number of 1571 cm 2 g -1 was obtained. Keywords : desulfurization, flotation, Gol-e-Gohar Complex, low-intensity ...
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The obtained iron concentrate reaches 64.28% Fe and 0.42% S, respectively, with the iron recovery of 53.62% and desulfurization rate of up to 90%. In other words, the desulfurization performance was much better in comparison with the separation process of direct one-stage fine grinding, where the raw ores were directly …
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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 …
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This concentrate is of all conditions of a salable iron concentrate for pelleting operation and then steelmaking using direct reduction method. Keywords: Hematite; Desulfurization; Flotation; Gol ...
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sbm desulfurization of iron concentrateDesulfurizing Steel: Magnesium is the Reagent of Choice In the process of steelmaking,removing excess sulfur from the hot metal is key to cr
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This study provides new insights into the separation of iron minerals. Next Article in Journal. Enhancement of Biofilm Formation on Pyrite by ... It also can be seen from Figure 5 that the desulfurization …
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bio-desulfurization of iron ores is usually done in an acidic Flotation, thermal decomposition, and chemical hydromet- solution which contain iron (III), therefore, in acid leaching, allurgical processes involve expensive steps in the set up and iron(III) oxidant, microorganisms and also galvanic interactions these methods are environmentally ...
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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 …
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The iron concentrate treated by the traditional desulfurization process has a desulfurization rate of 50–80 % (Rezvanipour et al., 2018). Flotation is usually used for desulfurization treatment, which will lead to various desulfurization rate depending on different desulfurizer and desulfurization parameters ( Nakhaei et al., 2018 ).
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An iron concentrate deep desulfurization treatment system applying the iron concentrate deep desulfurization treatment method according to any one of claims 1 to 7, characterized in that: the iron ore concentrate deep desulfurization treatment system comprises a magnetic separator, a stirring barrel, an oxidation reaction device, an aging ...
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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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1. Introduction. As the main type of iron ore, magnetite is the main raw material in the steel industry, which has a strict demand for its sulfur content [1], [2], …
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1. Introduction1.1. The importance of desulfurization. Sulfur is an earth-abundant element and the high-sulfur fuels and minerals (organic and inorganic sulfur-containing phases) have become the main energy resource [1], [2].However, the combustion of high-sulfur fuels results in irreversible poison for most precious metal catalysts in …
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Under the optimum roasting and magnetic separation conditions, the iron grade of magnetic concentrate reached 66.40 %, the iron recovery was 92.44 %, and …
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After conducted with sulfuric acid pretreatment, the desulfurization effect was very remarkable, the sulfur removal rate was as high as 96% and the sulfur content in the final magnetite concentrate was only 0.18%, which met the quality standard of iron concentrate (GB/T 36704–2018).
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Abstract. Desulfurization of iron-ore pellets was considered in [1‐7]. On the basis of these results and the thermodynamic analysis of possible reactions, the main chemical reactions of sulfur ...
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Iron ore desulfurization is the process of removing sulfur from iron ore that contains sulfur compounds. ... For weakly magnetic iron ore with low theoretical grade and various sulfur-containing types, iron ore concentrate with low impurity content can be obtained through a combined roasting-magnetic separation-flotation process, significantly ...
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Finally, the techniques are compared from technical, economic and environmental viewpoints, and future trends in desulfurization of iron ores are …
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3.3 Sulfur removal assessment in leaching column bioreactors. The leaching column bioreactor setup closely resembles heap leaching processes. Thus, subsamples of 500 g of primary iron concentrate samples A and B were agglomerated with water and inoculated with At. thiooxidans at an initial biomass of 10 6 (cells g −1).Two sets of ten …
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The Fe2O3 and Na2O contents in the final leaching product are 55.23 % and 0.23 %, and can be directly used as iron concentrate in the ironmaking process. View Show abstract
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2.2 Ore concentrate samples. Four different ore concentrate samples, two primary concentrate samples obtained after two rougher magnetic concentration stages and before the classification for grinding denominated "Iron concentrate sample A" (28.39% iron and 1.096% sulfur) and "Iron concentrate sample B" (40.70% iron and 0.950% sulfur), and …
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The iron ore sample was collected from magnetic separators concentrate stream of Gole Gohar iron ore complex with d80 equal to 90µm. Sulfur and total Fe contents of the sample were found to be 0. ...
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The main source of sulphur in the BF-BOF steelmaking process comes from coke. Even though roughly 40% of the sulphur in coal is removed in the coking process, typical sulphur levels in coke remain around 0.5%. Iron ore contains typically 0.01% sulphur and is only a minor source of sulphur in the steelmaking process 2, 8.
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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 …
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