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A new iron recovery and dephosphorization approach from
2023年1月1日· Deep dephosphorization of high‑phosphorus oolitic iron ore (HPOIO) is extremely difficult because of its refractory characteristics A new approach for simultaneous iron recovery and dephosphorization from HPOIO by oxidation roasting–gasbased2023年1月1日· To provide a new method for the dephosphorization of highphosphorus oolitic iron ore (HPOIO) by reduction roasting, the feasibility of the highefficiencyA new iron recovery and dephosphorization approach from high
A new iron recovery and dephosphorization approach from high
2022年10月1日· Deep dephosphorization of high‑phosphorus oolitic iron ore (HPOIO) is extremely difficult because of its refractory characteristics A new approach for2023年8月1日· To provide a new method for the dephosphorization of highphosphorus oolitic iron ore (HPOIO) by reduction roasting, the feasibility of the highefficiencyGreen and efficient separation of iron and phosphorus from high
Green and efficient separation of iron and phosphorus from high
2023年8月1日· To provide a new method for the dephosphorization of highphosphorus oolitic iron ore (HPOIO) by reduction roasting, the feasibility of the highefficiencyReduced iron (174% P) is produced from oolitic hematite ore by coalbased reduction and magnetic separation To realize the comprehensive utilization of Fe and P, theDephosphorization behavior of reduced iron and the properties of
Dephosphorization of unroasted oolitic ores through
2019年3月1日· Oolitic Iron Ore Goethite Sodium Hydroxide 1 Introduction Phosphorus is a deleterious component in the ironmaking industry, as it results in “cold shortness” of2020年11月29日· Pilot study of highphosphorus oolitic iron ore for iron recovery and dephosphorization by direct reduction–magnetic separation doi: 1013374/jissn2095Pilot study of highphosphorus oolitic iron ore for iron recovery
Dephosphorization of unroasted oolitic ores through alkaline
2019年3月1日· The iron ore concentrate used in this study is an oolitic type of iron ore consisting primarily of goethite, in which phosphorus does not form a discrete mineral2018年9月1日· To provide a new method for the dephosphorization of highphosphorus oolitic iron ore (HPOIO) by reduction roasting, the feasibility of the highefficiencyA review on the characterisation and processing of oolitic iron ores
Effect of additives on iron recovery and dephosphorization by
2021年3月4日· The effect of CaCO 3 , Na 2 CO 3 , and CaF 2 on the reduction roasting and magnetic separation of highphosphorus iron ore containing phosphorus in the form of Fe 3 PO 7 and apatite was investigated The results revealed that Na 2 CO 3 had the most significant effect on iron recovery and dephosphorization, followed by2019年5月26日· The efficient development and utilization of highphosphorus oolitic hematite is of great strategic significance for the sustainable supply of ironore resources in China In this paper, theStrengthening iron enrichment and
Pilot study of highphosphorus oolitic iron ore for iron recovery
2020年11月29日· With the development of the steel industry, the use of highgrade and easytohandle iron ore is gradually decreasing At present, the effective utilization of lowgrade and refractory iron ore, particularly highphosphorus oolitic iron ore, has gradually become a research hotspot and a worldwide problem This type of ore is mainly2021年10月24日· In this study, direct reductionmagnetic separation process was applied to enrich phosphorus and iron to prepare FeP crude alloy from a high phosphorus oolitic hematite ore (HPOH) The results show that at lower temperatures and with absence of any of additives, Fe cannot be effectively recovered because of the oolitic structure is notSynchronous enrichment of phosphorus and iron from a high
Enhancement of PyroHydrometallurgical Technology of Dephosphorization
2020年9月26日· Brown iron ore constitutes about 13% of the global ore reserves and is widespread throughout the world Brown iron ore is characterized by a significant content of harmful phosphorus (07 to 30%), which is typically present in the lattice of the main iron ore component in a chemically bound form Based on the case study of the gravity2022年12月20日· With the continuous consumption of easytotreat, highgrade iron ores, the effective utilization of difficulttotreat iron ores such as highphosphorus oolitic hematite has gradually become a popular research topic [1,2,3]Highphosphorus oolitic hematite is primarily distributed in Nigeria, Saudi Arabia, Libya, Algeria, the USA, andEffect of Raw Material Particle Size on the Direct Reduction
Recovery of iron from high phosphorus oolitic iron ore using
2013年5月23日· Oolitic iron ore is one of the most important iron resources This paper reports the recovery of iron from high phosphorus oolitic iron ore using coalbased reduction and magnetic separation The influences of reduction temperature, reduction time, C/O mole ratio, and CaO content on the metallization degree and iron recovery were2020年4月1日· The dephosphorization agent not only transforms partial phosphorus ores into easy removed solvable phosphate but also breaks the oolitic structure, leading to an easy separation of iron fromStrengthening iron enrichment and dephosphorization of high
A novel direct reductionflash smelting separation process of
2021年1月2日· The HPIO used in this study is produced in Hubei, China, and its main components are listed in Table 1It can be seen from the scanning electron microscope that the iron ore particles have a clear oolitic structure, as shown in Fig 1The layered structure is mainly composed of hematite, apatite or chlorite, and the silica‑aluminum impurities or2017年5月22日· Unlike previous dephosphorization studies, the present work complies with a concept to recover phosphorus within the utilization of highphosphorus oolitic iron ores to prepare FeP alloy for highphosphorus steel productionSimultaneous enrichment of iron and phosphorus can be achieved by directly alloying the highphosphorus ooliticSimultaneous Recovery of Iron and Phosphorus from a High
Strengthening iron enrichment and dephosphorization of high
2020年4月14日· The efficient development and utilization of highphosphorus oolitic hematite is of great strategic significance for the sustainable supply of ironore resources in China In this paper, the mechanism of hightemperature pretreatment for enhancing the effect of iron enrichment and dephosphorization in the magnetization roastingleaching2017年11月6日· An innovative process of coalbased reduction followed by magnetic separation and dephosphorization was developed to simultaneously recover iron and phosphorus from one typical highphosphorus refractory iron ore The experimental results showed that the iron minerals in iron ore were reduced to metallic iron during the coalComprehensive Utilization of Iron and Phosphorus from High
Strengthening iron enrichment and dephosphorization of high
volume of ironore resources has yet to be effectively exploited and utilized Among them, the oolitic hematite reserves exceed 10 billion tons, accounting for 12% of the total ironore reserves and 30% of the total hematite reserves in China The iron deposited in western Hubei province, Xuanlong in Hebei province, Ningxiang in HunanSoc China, v 22, p 2806−2812, 2012 investigated the phosphorus removal of oolitic hematite ore of high content of iron by applying a reductive calcination with dephosphorizing agent (Na 2 SO 4 and Na 2 CO 3) RANJBAR, M Dephosphorization of iranian iron oxide fines by flotation Erzmetall, v 55, n 11, p 612620, 2002Processes for phosphorus removal from iron ore a review
Oolitic ironstones USGS Publications Warehouse
ISOTOPIC SIGNATURES: Siderite has light C, about 18 per mil; unknown for other minerals (Maynard, 1983) STRUCTURAL SETTING: Major deposits in undeformed to simply folded strata Some Ordovician deposits on blocks complexly deformed by the Armorican (Hercynian) orogeny of Western Europe ORE DEPOSIT GEOMETRY:2016年5月4日· Deep dephosphorization of high‑phosphorus oolitic iron ore (HPOIO) is extremely difficult because of its refractory characteristics A new approach for simultaneous iron recovery and(PDF) Phosphorus Removal and Iron Recovery from High
高磷铁矿富氢烧结过程中磷的还原行为研究
基于此，提出了富氢烧结过程中进行磷的气化脱除的方法。 本文围绕高磷铁矿富氢烧结过程中磷的还原机理进行研究，并采用非等温动力学方法对富氢烧结过程磷灰石还原动力学进行研究。 结果表明富氢烧结过程中，随着还原时间从20增加到60 min，脱磷率从102021年9月20日· The reduction roasting followed by magnetic separation process is considered to be a suitable method to treat the highphosphorus oolitic iron ore Currently, the dephosphorization mechanism of additives such as CaCO 3 , Ca(OH) 2 , Na 2 SO 4 , and Na 2 CO 3 on the reduction roasting of the iron ore in which phosphorus occurs inInfluence of Sodium Salts on Reduction Roasting of High
Improvement of Phosphorus Removal from Iron Ore Using
2015年10月1日· ores, such as oolitic iron ore, a perfect knowledge of the ore texture and mineralogy is needed [42] Study o n Dephosphorization Techno logy for HighPhosp horus Iron Ore, Mining &2018年5月29日· Highphosphorus iron ore is not used because of its high phosphorus content Phosphorus is mainly present in fluorapatite In this work, the phosphorus vaporization that occurs during the carbothermal reduction of fluorapatite was investigated The thermodynamic principle of vaporization, which removes phosphorus duringPhosphorusContaining Mineral Evolution and Thermodynamics