Technological Challenges of Phosphorus Removal in High-Phosphorus …
With the present rates of iron ore consumption, currently unusable, high-phosphorus iron ore deposits are likely to be the iron ores of the future as higher-grade iron ore reserves are depleted. Consequently, the design and timely development of environmentally-benign processes for the simultaneous beneficiation of high …
Research on efficient utilization of high-phosphorus oolitic …
The paper proposes the innovative technology of hydrogen mineral phase transformation–magnetic separation–acid leaching for iron enrichment and dephosphorization, based on the mineralogical characteristics of high phosphorus oolitic hematite and difficulties that make it difficult to utilize traditional beneficiation for …
Effect of H2 on the Distribution of Phosphorus in the
Global steel production is growing but high-grade ores have been depleted coupled with the decarbonization of the steel industry. The world has to utilize low-grade ores and to use hydrogen in the reduction process to curb CO2 emissions. The phosphorus distribution behavior in iron ore pellets reduced by CO-H2 gas mixtures …
Preparation of Reduced Iron Powder from High-Phosphorus …
Dephosphorization is essential for utilizing high-phosphorus iron ore (HPIO), and this work prepared reduced iron powder via reductive roasting in a semi-industrial …
Increasing Iron and Reducing Phosphorus Grades …
High-phosphorus oolitic iron ore, treated by suspended flash magnetic roasting, contained 42.73% iron (mainly present as magnetite) and 0.93% phosphorus (present as collophane). Low …
A new iron recovery and dephosphorization approach from high‑phosphorus …
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–gas-based reduction (ORGR) and magnetic separation process was developed.The underlying …
Gasification and Migration of Phosphorus from High …
The high-phosphorus oolitic hematite ore is embedded with extremely fine grains, with an uneven distribution and a high content of harmful impurities. Iron oxides are intercalated …
Thermodynamic analysis of the carbothermic reduction of a high …
A thermodynamic analysis of the carbothermic reduction of high-phosphorus oolitic iron ore (HPOIO) was conducted by the FactSage thermochemical software. The effects of temperature, C/O ratio, additive types, and dosages both on the reduction of fluorapatite and the formation of liquid slag were studied. The results show …
Phosphorus reduction behavior of high phosphate iron ore …
High-phosphorus iron ore resource is considered a refractory iron ore because of its high-phosphorus content and complex ore phase structure. Therefore, the development of innovative technology to ...
Ultrasonic treatment of high phosphorus Australian iron ore …
1. Introduction. It is estimated that there are around 10.3 billion tonnes of under-developed medium level phosphorus-containing iron ore (0.07–0.10 wt% P) and 8.0 billion tonnes of high level phosphorus ore (>0.10 wt% P) in Western Australia (Fisher-White et al., 2012).The bulk of production is typically a blend of low phosphorus martite …
The Development of High-Phosphorus Iron Ore Sees a …
The global confirmed reserves of high-phosphorus iron ore exceed 20 billion tons, mainly distributed in countries such as Algeria, China, Kazakhstan, and Nigeria. Due to the abundant ooids, complex composition, fine-grained phosphorus mineral dissemination, low grade and high phosphorus content in this iron ore, it has been …
Diversity and activity of phosphate bioleaching bacteria from a high
[1] [2] [3][4][5] According to the statistical survey, the reserves of high phosphorus iron ore reach 7.45 billion tons in China, and among them more than 4 billion tons was deposited in Hubei ...
Clean production of Fe-based amorphous soft magnetic …
Separated preparation of prealloys and amorphous alloys results in severe solidification–remelting and beneficial element removal–readdition contradictions, which markedly increase energy consumption and emissions. This study offered a novel strategy for the direct production of FePC amorphous soft magnetic alloys via smelting reduction …
Synchronous enrichment of phosphorus and iron from a high-phosphorus …
In this study, direct reduction-magnetic separation process was applied to enrich phosphorus and iron to prepare Fe-P 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 not …
Green and efficient separation of iron and phosphorus from high …
1. Introduction. With the increasing consumption of high-quality iron ore, realizing the efficient utilization of refractory iron ore resources is of strategic significance for the sustainable development of the iron and steel industry (Qin et al., 2023, Sahu et al., 2023, Yuan et al., 2019).Among refractory iron ores, high-phosphorus oolitic iron ore …
Removal of Phosphorus From High Phosphorus Iron Ores …
The P content of all samples including high phosphorus iron ore was analyzed by bismuth- phosphomolybdenum blue spectrophotometric method (JH-722N, Shanghai Qing Hua Science and Tech- nology Instrument Co Ltd China). 2 Results and Discussion 2. 1 On the condition of reaction temperature 60 'C, stirring strength 12. 76 s …
Effect of additives on iron recovery and dephosphorization
The effect of CaCO3, Na2CO3, and CaF2 on the reduction roasting and magnetic separation of high-phosphorus iron ore containing phosphorus in the form of Fe3PO7 and apatite was investigated. The results revealed that Na2CO3 had the most significant effect on iron recovery and dephosphorization, followed by CaCO3, the effect …
Gasification Removal Behaviour of Phosphorus Compounds …
The gasification removal behaviour of phosphorus from high-phosphorus iron ore is theoretically and experimentally studied in the temperature range of 400–900 …
Distribution Behavior of Phosphorus and Metallization of Iron …
To clearly show the effect of temperature on the carbothermic reduction of high-phosphorus iron ore, the high-phosphorus iron ore was reduced at various temperatures between 1323 K and 1523 K (1050 °C and 1250 °C) while keeping other process parameters fixed (C/O molar ratio: 1.0, holding time: 3 h, heating rate: 100 …
Canada adds high-purity iron, phosphorus, silicon metal to …
New to the list are high-purity iron — used in green steel making and decarbonization; phosphorus — essential for batteries and food security, and silicon metal — required for semiconductors ...
Simultaneous Recovery of Iron and Phosphorus from a High-Phosphorus …
Unlike previous dephosphorization studies, the present work complies with a concept to recover phosphorus within the utilization of high-phosphorus oolitic iron ores to prepare Fe-P alloy for high-phosphorus steel production. Simultaneous enrichment of iron and phosphorus can be achieved by directly alloying the high-phosphorus oolitic …
Strengthening iron enrichment and dephosphorization of high-phosphorus …
The efficient development and utilization of high-phosphorus oolitic hematite is of great strategic significance for the sustainable supply of iron-ore resources in China. In this paper, the mechanism of high-temperature pretreatment for enhancing the effect of iron enrichment and dephosphorization in the magnetization roasting–leaching process was …
The Behavior of Phosphorus in the Hydrogen‐Based Direct …
Unbeneficiated magnetitic iron ore was used in this study; the relatively high phosphorus content facilitates the detection via scanning electron microscope with …
Technological Challenges of Phosphorus Removal in High-Phosphorus …
With the present rates of iron ore consumption, currently unusable, high-phosphorus iron ore deposits are likely to be the iron ores of the future as higher-grade iron ore reserves are depleted.
Microwave Assisted Liberation of High …
Deposits of high-phosphorus iron ores are widely spread worldwide, but the use of these deposits in industry is limited owing to the high phosphorus content, which affects the cost of the iron ...
Strengthening iron enrichment and dephosphorization of high-phosphorus …
The efficient development and utilization of high-phosphorus oolitic hematite is of great strategic significance for the sustainable supply of iron-ore resources in China. In this paper, the mechanism of high-temperature pretreatment for enhancing the effect of iron enrichment and dephosphorization in the magnetization roasting-leaching …
Flotation Dephosphorization of High-Phosphorus …
phorus. However, there have also been reports on the simultaneous recovery of iron and phosphorus to prepare Fe–P alloys for high-phosphorus steel production [16]. Zhou [17] proposed a microwave-fluidized bed pretreatment technology (MFP) to enhance the separation of oolitic hematite. Compared with those obtained …
The Relevance of Phosphorus and Iron Chemistry to the …
The addition of iron is a convenient way for removing phosphorus from wastewater, but this is often considered to limit phosphorus recovery. Struvite precipitation is currently used to recover phosphorus, and this approach has attracted much interest. However, it requires the use of enhanced biological phosphorus removal (EBPR). …
Gasification and Migration of Phosphorus from High …
with gangue minerals, which cause iron and phosphorus to be difficult to separate. High-phosphorus iron ore is a world-recognized complex refractory iron ore. 10) On account of the above-mentioned difficulties, in recent years, experiments using the high-phosphorus iron ore have been carried out to improve the iron grade while considering ...
Review on High Phosphorous in Iron Ore: Problem and Way …
Phosphorous is an undesired element present in iron ore used in the steel making process. It leads to an increase in overall production cost as well as deteriorated steel quality. The desired phosphorus content in iron ores used in steel making is < 0.1%. Numerous beneficiation studies are mentioned in the literature; however, there is no …