The dephosphorization process for high phosphorous iron ores has been studied for many years all over the world. Typical methods includes benefication 25) smelting6) and microbial 8) Recently some other approaches were proposed to remove phosphorous economically with respect to various kinds of high phosphorous iron
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198951 A hydrometallurgical process for the dephosphorization of iron ore. HydrometaUurgy 21 277292. A process is proposed for the dephosphorization of iron ore. The process consists of an inte grated treatment for the removal of the phosphorus from the ore by leaching and further process
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dephosphorization reaction. Iron ore with Fe< 60 can be used as raw material to produce the direct reduced iron by coalbased direct reduction or the slag/metal separation process of the reduced iron from the oolitic highphosphorus iron ore fines by gas (Tang et al. 2014). Yu et al. (2013) thought sulfuric acid was the most appropriate
Comparative Assessment of Phosphorus Removal from . Comparative assessment of phosphorus removal from Nigeria s agbaja iron ore using potassium chlorate and sodium hydroxide American Journal of Research Communication 2013 1 8 43 52 journals com ISSN 2325 4076 INTRODUCTION The need for a drastic reduction in the concentrations of phosphorus present in iron ore as a way of.
As of September 02 Registered articles 6 952 Dephosphorization of Iron Ore Bearing High Phosphorous by Carbothermic Reduction the phosphorous in oolitic hematite ores exists in two forms inter grew with iron oxide or gather . eliasmatinde witsacza Wits University.
The integrated process which combined the carbothermic reduction assisted with microwave irradiation followed by milling and magnetic separation was investigated as a potential approach for dephosphorization treatment of iron ores bearing high P. Mineralogical Research indicated that the phosphorous in oolitic hematite ores exists in two forms intergrew with iron oxide or gather together
Abstract An attempt has been made in this study to optimize the process variables for the dephosphorization of iron ore using nitric acid. Standard central composite design with 23 full factorial was used to develop the model. The model was optimized using Matlab. The surface responses of the plots show that concentration interacted
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Novelty Journals. additive to iron ore dosage ratio of 10 90 13 87 16 84 19 81 at different temperature 500ºC 600 700 and 900ºC. After cooling the roasted mass was sent to XRF the result obtained shows the effect of roasting with additive on the iron ore as to the extent of dephosphorization. Leaching of the ore More
A Review on Novel Techniques for Chalcopyrite Ore . 201211 In older processes the concentrate containing between 56 10 percent water is first roasted in a cylindrical refractory lined furnace of either the hearth or fluidized bed type. As concentrate is fed into the roaster it is heated by a stream of hot air to about 590℃.
Removal of phosphorus from iron ores by chemical leaching journals on dephosphorization of iron ore . A Material Flow Analysis of Phosphorus in Japan .
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Dephosphorization of steel is critical due to the rising prices (100 rise in past five years) of iron ore which has resulted in the use of lower grade iron ores .Increased phosphorus (P) content in steel imparts cold shortness and leads to poor ductility toughness formability and embrittlement 2 3 .It has been observed that the primary driving factor for dephosphorization in
Some other p apers have reported the use of bacteria for the dephosphorization of iron ore (He and W ei 2000 Delvasto et al . 2005) and iron slag (Pradhan e t a l . 2004).
Keywords AgbajaKogi iron ore Effect Dephosphorization Oxidative Process variables. I. INTRODUCTION As oil is fast depleting there is increasing need for the country to diversify to other natural resources for its economic growth. Iron ore which is one of the mineral resources is an alternative to oil for economic development. Generally iron
article osti_ title = Reduction and dephosphorization of molten iron oxide with hydrogenargon plasma author = Nakamura Y and Ishikawa H and Ito M abstractNote = A laboratoryscale test was made in which iron oxide contained in a watercooled crucible was melted and reduced by using a 1050 H/sub 2/Ar transferred arc plasma.
journals on dephosphorization of iron ore. journals on dephosphorization of iron ore illia The composition of iron concentrate obtained 6412 Fe and 007 phosphorus with an iron recovery of 9683 and a rate of dephosphorization of 7408 Figure 2 shows a Chat Now Dephosphorization of HighPhosphorus Iron Ore Using Different
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The iron concentrate assaying Fe and P at the iron recovery of and the dephosphorization rate of is obtained under the optimum conditions. The final product (metal iron powder) after briquetting can be used as the burden for steelmaking by an electric arc furnace to replace scrap steel.