##tihuan2##Iron ore sintering is the main SO2 emission process in iron and steel industry. The flue gas of iron ore sintering has been cleaned by desulfurization equipment, which causes high capital and ...
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##tihuan2##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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##tihuan2##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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##tihuan2##The massive generation of iron ore fines (~60%) and lime fine (~50%) during their mining and beneficiation process simultaneously increasing-price and demand of scrap encourage the production of ...
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##tihuan2##The oxygen for desiliconisation and dephosphorisation was supplied by either top charging of iron ore or injection of dehydrated air with an equivalent oxygen amount. ... The Influence of Operating Condition on Dephosphorization and Desulphurization Reactions of Hot Metal with Lime-based Flux.
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##tihuan2##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 oxides-pyrite with xanthate has been examined based on micro-flotation results and zeta-potential measurements. Then, an effort has been made to investigate the ...
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##tihuan2##Five iron ore agglomeration technologies can be defined: briquetting, nodulization, extrusion, pelletization and sintering. Sintering and pelletization are the most important agglomeration technologies, in this way, in the EU-27, 14 countries operate 34 iron ore sinter plants with 63 iron ore sinter strands, producing in the first decade of the ...
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##tihuan2##For describing and resolving the process of chromium ore smelting reduction in a converter preferably, the coupling dynamic model was established based on the kinetic models of chromium ore dissolution and interfacial reducing reaction between the slag and metal. When 150 t stainless steel crude melts with chromium of 12% are produced in a …
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##tihuan2##The results indicated that when high-phosphorus iron ore concentrates containing 54.92 mass pct iron and 0.76 mass pct phosphorus were directly processed through acid leaching, iron ore ...
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##tihuan2##The purpose of this study was to develop a novel method for desulfurization of iron ore and flue gas at low temperature under microwave irradiation. The effect of …
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##tihuan2##The objective of this study was to improve the efficiency of microbial desulphurization of sulfide ore by pretreatment with ultrasonic and microwave techniques.
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##tihuan2##Abstract: Model for predictive analysis of the concentration of sulphur removed by molecular-oxygen-induced desulphurization of iron oxide ore (powdered potassium chlorate being the oxidant) has been derived. The model; %S = 0.0415/Logγ was found to
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##tihuan2##Direct application of high-sulfur fuels and ores can cause environmental pollution (such as air pollution and acid rain) and, in serious cases, endanger human health and contribute to property damage. In the background of preserving the environment, microbial desulfurization technologies for high-sulfur fuels and ores are rapidly …
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##tihuan2##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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##tihuan2##In this study, the optimal HMD slag composition is investigated, considering both the sulphur removal capacity and the iron losses. In part I the theory is discussed and in part II the optimal slag is …
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##tihuan2##The two most important HMD processes are the co-injection process (where desulphurising reagents, typically Mg and CaO or CaC2, are injected into the hot metal) …
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##tihuan2##Research [11] has been carried out to study the limit of desulphurization of iron ore, as function of the initial sulphur content of the ore and removed sulphur concentration. Investigation on the ...
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##tihuan2##The filling material is made of iron ore overflow tailings as the filling aggregate and the modified CDA and slag as the cementitious material. It was found that the cementitious materials with compressive strength of 1.28 and 2.86 MPa at 7 and 28 d can be obtained by adding 61% slag, 15% modified CDA, 12% gypsum and reinforcing …
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##tihuan2##Particulate iron ore desulphurization was carried out using powdered potassium chlorate which acted as an oxidant on the sulphur present in the ore. The process analysis and mechanism of the ...
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##tihuan2##Different combinations of ultrasound and microwave were used to pretreat the sulfide ore and compare the microbial desulphurization effect of the treated ore and the raw ore. ... Anhui Province. The ore samples were analyzed for their composition, and their main elements were sulfur, iron, oxygen, silicon, calcium, barium, magnesium, …
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##tihuan2##The reagents used in iron ore flotation, including starch, amines and fatty acids, and the mechanisms of their interactions with the minerals in iron ore are examined.
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##tihuan2##The reduction rate of iron oxide increased with increasing total iron content of iron ore coal mixed briquettes. The gasified desulphurization rate during self-reduction of iron ore coal mixed ...
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##tihuan2##In this paper, the mechanism of selective desulphurization by adding urea during the iron ore sintering was carried out. The results show that 88.14 % desulphurization rate was obtained with the addition of …
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##tihuan2##Owing to the negative effects of sulphur in iron ore on steelmaking process and environment, a tank leaching process was performed in atmospheric conditions to remove the sulphur from the iron ore concentrate and simultaneously to transform sulphide minerals into useful by-products. To achieve desirable sulphur removal rate and …
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##tihuan2##This article describes the state-of-the-art in desulphurization by explaining the sources of sulphur in iron and steelmaking, the quality requirements of steel products and the desulphurization ...
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##tihuan2##Pelletizing of iron ore is a method of Swedish origin, patented in 1912 by AG Andersson (Yamaguchi et al., 2010). The process was developed in the USA in the 1940s, and the first commercial plant started operation in Babbitt, Minnesota in 1952. The first iron ore pellet plant of the grate-kiln type was established at Humboldt Mine, …
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##tihuan2##iron concentrate with the minimum content of sulfur suitable for pelletizing plant. Gol-e-Gohar Complex is located at 50 km southwest of the Sirjan City, in Ker-man province, Iran. It is estimated that the iron ore industry having iron ore reserves approximately 1250 million tons annually produces 11 million tons of concentrate.
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##tihuan2##The ore samples were analyzed for their composition, and their main elements were sulfur, iron, oxygen, silicon, calcium, barium, magnesium, aluminum, and copper in descending order. ... To better investigate the mechanisms of ultrasonic and microwave enhanced desulphurization of ore samples, the surface of the ore sample …
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##tihuan2##Desulphurization of iron ore concentrates may be achieved by using both physical and chemical methods. Physical processes are cost-effective methods but are …
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