Comprehensive Utilization of Iron and Phosphorus from High-Phosphorus …
An innovative process of coal-based reduction followed by magnetic separation and dephosphorization was developed to simultaneously recover iron and phosphorus from one typical high-phosphorus refractory iron ore. The experimental results showed that the iron minerals in iron ore were reduced to metallic iron during the coal-based reduction and the …
Gasification Removal Behaviour of Phosphorus Compounds …
The gasification removal behaviour of phosphorus from high-phosphorus iron ore in the temperature range of 400–900 °C under H 2 reducing and N 2 atmosphere was …
The Beneficiation Techniques for 5 Types of Iron Ores in …
Beneficiation techniques of high-sulfur-phosphorus iron ore. Conclusion Vietnam's iron ore is widely distributed and abundant in reserves, but the comprehensive processing technology and economic level are relatively lower, resulting in the low utilization rate of iron ore resources, and even a large number of iron minerals are not developed. ...
Migration behavior of iron and phosphorus during gas …
In this study, we presented simultaneous enrichment of iron (Fe) and phosphorus (P) to recover P from high-phosphorus iron ore and clarified the migration of P from the …
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 °C under H 2 reducing and N 2 atmospheres. In the first step, thermodynamic analysis is conducted to reveal the gasification and reaction behaviours of common phosphorus compounds, namely P 4 O …
Advance in dephosphorisation of high phosphorus iron ore …
The best advantages of the proposed novel process to recover the phosphate resource from the acidic leach liquor of high phosphorus iron ore are as follows: firstly, direct enrichment of phosphate ...
Smelting Potential of HIsmelt Technology for High-Phosphorus Iron Ore …
The iron recovery rate for high-phosphorus iron ore reached 92% with relatively high phosphorus content of pig iron about 0.28%under the reduction temperature of 1450 °C.
Dephosphorization of unroasted oolitic ores through alkaline …
1. Introduction. Phosphorus is a deleterious component in the iron-making industry, as it results in "cold shortness" of steel, and iron ores receive a price penalty if they exceed 0.07–0.08 wt% P. (Cheng et al., 1999).At current mining rates, it is predicted that the premium-grade iron ore with low phosphorus will deplete within the next 30 years (Han et …
Phosphorus Removal from Goethitic Iron Ore with a Low …
The phosphorus in high-phosphorus (>0.1% P) iron ores from the Pilbara area of Western Australia is mainly associated with the goethite fraction of the ore. Physical separation methods and simple leaching processes do not remove sufficient phosphorus from the ores to meet market specifications of 0.075% P. Processing to disrupt the goethite ...
Mixture of ilmenite and high phosphorus iron ore smelted …
In order to reasonably utilize the abundant resources of high-phosphorus iron ore and ilmenite in China, the technology of top-blown smelting reduction with oxygen enrichment was used to smelt the mixed ore of high-phosphorus iron and ilmenite. The effect, which is related to basicity, reduction temperature, carbon-oxygen ratio and time of ventilated oxygen to iron …
Intensifying Gaseous Reduction of High Phosphorus Iron Ore …
Key words: high phosphorus iron ore fine; gaseous reduction; kinetics; microwave pretreatment Nowadays how to utilize the large deposit of oolitic high-phosphorus ore in Hubei is receiving more and more attention from many iron and steel making en- terprises in China. Researchers in universities and institutes are also seeking effective methods ...
Mobilisation of potassium and phosphorus from iron ore …
Mobilisation of K and P in relation to particle size and organic acid production. The XRF analyses of the two Sishen iron ores revealed their chemical composition, these are listed in Table 1.The major K 2 O bearing mineral contained in both SK and KGT ores was characterised as muscovite by Sishen iron ore company (Richards 1990–1992). The P-bearing minerals are …
Preparation of Reduced Iron Powder from High Phosphorus Iron Ore…
Dephosphorization is essential for utilizing high-phosphorus iron ore (HPIO), and this work prepared reduced iron powder via reductive roasting in a semi-industrial rotary kiln follower by ...
Distribution Behavior of Phosphorus and Metallization of Iron …
High iron and low phosphorus content in the concentrate with high iron recovery could be obtained by the combination of reduction and magnetic separation.[9,10] In addition, Yu et al. investigated how alkaline additives such as Ca(OH) 2 and Na 2 CO 3 used in the carbothermic reduction of high-phosphorus iron ore positively affected phosphorus ...
Characterisation of phosphorus and other impurities in …
Phosphorus is one of the most deleterious elements in iron ore as it follows iron during downstream reduction processes, forming iron phosphides that make steel brittle. …
A new iron recovery and dephosphorization approach from …
The novel method has accomplished efficient processing of oolitic hematite and a reasonable control of production costs during processing, which is significant for expanding …
Characterization studies on Agbaja iron ore: a high-phosphorus …
Iron ores with phosphorus content lower than 0.07% P are commercially desired as they are suitable for use in iron production. As a consequence, a lot of research efforts have been focused on phosphorus removal from high-phosphorus iron ore [20, 24, 32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48] in a bid to reduce the P content to …
Characterization studies on Agbaja iron ore: a high …
Optical microscopy results from a polished cross section of the ore (Fig. 1) show the oolitic structure of the ore, composed of lighter spherical grains in concentric layers embedded in a darker matrix. The presentation of the ore is consistent with the structure of oolitic ores.
Effect of sodium silicate on the reverse anionic flotation of a
This study aimed to find an effective reagent combination to reduce the silica and phosphorous contents of iron concentrate. Batch flotation tests were carried out to investigate the influence of sodium silicate dosage, modulus and addition of Ca ++ ions, on the separation selectivity of phosphorous and siliceous gangue minerals from iron oxides. The feed sample, …
An innovation for strengthen iron extraction from phosphorus …
Phosphorus-bearing refractory iron ore is a typical refractory iron resource with low Fe content, weakly magnetic, and high phosphorus content [8], [9]. When traditional beneficiation methods, such as gravity separation, magnetic separation, and flotation, are employed to extract iron from gangue, the Fe recovery and Fe grade of concentrate are ...
Mobilization of phosphorus from iron ore by the bacterium …
The bacterium Burkholderia caribensis FeGL03, isolated from a Brazilian high-phosphorus iron ore, was used to mobilize the phosphate contained in the same ore. The phosphate-mobilizing ability of the organism was tested in shake-flask cultures containing sterilized crushed iron ore in a chemically-defined liquid culture medium containing glucose …
Application of a fungal cellulase as a green depressant of …
A representative sample of a natural high-phosphorus iron ore was obtained from Aswan area, southern Egypt. The chemical analysis of the sample (Table 1), indicated that the main gangue minerals were silica (A.I.%) and phosphorus-bearing minerals (apatite). To obtain the maximum mineral liberation, the sample was first crushed by a jaw crusher ...
Smelting Potential of HIsmelt Technology for High-Phosphorus Iron Ore
The iron recovery rate for high-phosphorus iron ore reached 92% with relatively high phosphorus content of pig iron about 0.28%under the reduction temperature of 1450 °C. Although decreasing amplitude of phosphorus content was remarkable(0.9% in raw iron ore vs. 0.28% in pig iron), the molten iron was still not satisfied with the requirement ...
Review on High Phosphorous in Iron Ore: Problem and Way …
DOI: 10.1007/s42461-024-01001-6 Corpus ID: 270114530; Review on High Phosphorous in Iron Ore: Problem and Way Out @article{Singh2024ReviewOH, title={Review on High Phosphorous in Iron Ore: Problem and Way Out}, author={Akhil Singh and Veerendra Singh and Sudipta Patra and Prashant Dixit and Asim Kumar Mukherjee}, journal={Mining, …
Analysis: Australian iron ore fines' alumina, phosphorus …
On the back of consistent feedback from market participants across the supply chain, Platts also increased the typical phosphorus content considered in Pilbara Blend Fines -- Rio Tinto's flagship medium grade iron ore fines product -- to 0.0925% from 0.09%.
Processes for phosphorus removal from iron ore
Phosphorus can be removed from iron ore by very different routes of treatment. The genesis of the reserve, the mineralogy, the cost and sustainability define the technology to be applied.
Migration behavior of iron and phosphorus during gas …
By applying the optimum separation conditions to the flotation of a natural high-phosphorus iron ore, the phosphorus content in the concentrate was reduced from 0.84% to 0.19% at an iron recovery ...
Low-Grade Phosphorus-Containing Iron Ore for the …
The possible use of low-grade phosphorus-containing iron oreIron ore (LGPIOLow grade phosphorus-containing iron ore (LGPIO) ), a raw and wasted industrial solid material as an adsorbent to remove CuCu (II) ion removal (IICu (II) ion removal ) ion from...
Increasing Iron and Reducing Phosphorus Grades of …
The available reserves of high-phosphorus oolitic iron ore located in Western Hubei, China, exceed 2 billion tons. This is a chemical sedimentary iron ore, mainly composed of oolite (more than 60%) [8,9].Specifically, the ore comprises nuclear oolite (quartz or iron material), a collophane girdle, hematite, and a limonite girdle; the gangue is composed of fine …
Developing dephosphorisation technique for iron ore with
Iron ore in Australia is predicted to increase in its phosphorus content in the near future, which is detrimental to properties of steel product. Steelmakers are concerned by the content of phosphorus in iron ore will exceed limits for steelmaking and increase the converter slag ratio to molten steel, which will finally lead to a decline in competitiveness in high-grade steel production.