Comprehensive Utilization of Iron and Phosphorus …
Yuexin Han, Peng Gao & Guofeng Li. 692 Accesses. 33 Citations. Explore all metrics. Abstract. An innovative process of coal-based reduction followed by magnetic …
اقرأ أكثر
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 …
اقرأ أكثر
Improvement of phosphorus removal from iron ore using …
DOI: 10.1016/J.SEPPUR.2015.10.071 Corpus ID: 94330811; Improvement of phosphorus removal from iron ore using combined microwave pretreatment and ultrasonic treatment @article{Omran2015ImprovementOP, title={Improvement of phosphorus removal from iron ore using combined microwave pretreatment and …
اقرأ أكثر
(PDF) Phosphorus Removal and Iron Recovery …
The results showed that the powdery reduced iron produced contained 91.37% iron and 0.14% phosphorus, and the iron recovery was 92.81%, which is an ideal for steelmaking.
اقرأ أكثر
Phosphorus removal from high phosphorus oolitic iron ore …
This paper reports the phosphorus removal of high phosphorus oolitic iron ore by acid leaching and its influence factors. The experimental ore is Exi high phosphorus oolitic iron ore with 0.5% phosphorus, 51.7% iron and 0.34% sulphur. After acid leaching, the P content decreases to about 0.07%, the iron loss during acid leaching is about 0.18%, …
اقرأ أكثر
Processes for phosphorus removal from iron ore
The increased residence time decreases the removal of phosphorus due to the re-precipitation phenomena; Alkaline leaching is effective for removal of the phosphorus …
اقرأ أكثر
Removal of phosphorus from iron ores by chemical leaching
Alkali-leaching and acid-leaching were proposed for the dephosphorization of Changde iron ore, which contains an average of 1.12% for phosphorus content. Sodium hydroxide, sulfuriced, hydrochloric ...
اقرأ أكثر
Phosphorus reduction behavior of high-phosphate …
Phosphorus reduction behavior of high-phosphate iron ore during hydrogen-rich sintering. Published: 22 August 2022. Volume 29, pages 1862–1872, ( 2022 ) Cite this …
اقرأ أكثر
Processes for phosphorus removal from iron ore
Removal results of above 90% and less than 0.05% residual phosphorus are noticed, which is the maximum value required in most of the products generated in …
اقرأ أكثر
REMOVAL OF PHOSPHORUS THROUGH …
removal of phosphorus through roast ing of oolitic iron ore with alkaline earth addit ives As a general rule, when mineral processing s chemes encom pass high temperature steps, dr y separation routes
اقرأ أكثر
Improvement of Phosphorus Removal from Iron Ore …
Accepted Manuscript Improvement of Phosphorus Removal from Iron Ore Using Combined Micro-wave Pretreatment and Ultrasonic Treatment Mamdouh Omran, Timo Fabritius, Ahmed M. Elmahdy, Nagui A. Abdel-
اقرأ أكثر
REMOVING IMPURITIES FROM IRON ORES: METHODS AND …
This research aims to make a preliminary study of wavellite's floatability and to evaluate the reduction of phosphorus content by froth flotation from a Brazilian iron ore with a P content of 0.82%.
اقرأ أكثر
(PDF) Bioflotation of low Grade Egyptian Iron Ore using
Microbes, over the course of many years, have demonstrated their capacity for phosphate solubilization, which has paved the way for exploring their role in mitigating phosphorus content in iron ore. In the context of this study, our objective was to investigate the feasibility of employing bioleaching as a method for dephosphorizing iron ore ...
اقرأ أكثر
Removal of phosphorus from iron ores by chemical leaching
Alkali-leaching and acid-leaching were proposed for the dephosphorization of Changde iron ore, which contains an average of 1.12% for phosphorus content. Sodium hydroxide, sulfuriced, hydrochloric and nitric acids were used for the preparation of leach solutions. The results show that phosphorus occurring as apatite phase could be …
اقرأ أكثر
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 realize the efficient utilization of high-phosphorus iron ore resources is of theoretical and practical significance. Thus, a method for phosphorus …
اقرأ أكثر
Amenability for processing of oolitic iron ore concentrate for
The high phosphorus oolitic hematite ores are more amenable to dephosphorisation by physical separation than the limonitic ones ( Jiang et al., 2008). Following beneficiation of such ore graded at 37.51% Fe and 0.88% P by spiral chute and shaking table, an iron concentrate with 58.67% Fe and 0.52% P at 51.93% recovery has …
اقرأ أكثر
Removal of Silicon, Aluminum and Phosphorus …
2.3.2 Alkaline roasting and water washing of iron ore: P removal The iron ore sample was roasted in a muffle furnace under the different NaOH concentrations (10-50 g/kg-ore), various temperatures (100-300°C), and different times (0.5-2 h). The sample roasted was washed with deionized water at the solid-liquid ratio of 1:10 for 30 seconds.
اقرأ أكثر
The removal of phosphorus from iron ore by leaching with …
Removal of phosphorus from iron ores by chemical leaching. Yong-shi Jin J. Tao Yong-bin Yang L. Qian Guanghui Li Yu-feng Guo. Materials Science, Environmental Science. 2006. Alkali-leaching and acid-leaching were proposed for the dephosphorization of Changde iron ore, which contains an average of 1.12% for phosphorus content.
اقرأ أكثر
Effect of calcium compounds on direct reduction and …
Effect of calcium compounds on direct reduction and phosphorus removal of high-phosphorus iron ore. Abstract: The increasing demand for iron ore in the world causes the continuous exhaustion of magnetite resources. The utilization of high-phosphorus iron ore becomes the focus. With calcium carbonate (CaCO 3), calcium chloride (CaCl 2), or ...
اقرأ أكثر
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.
اقرأ أكثر
Phosphorus Removal of High Phosphorus Iron Ore by Gas …
A new method (gas-based separation plus melt separation) has been proposed to remove phosphorus of the high phosphorus iron ore which was 1.25% of phosphorus content and 50.0% of iron content. HSC chemistry package and the coexistence theory of slag structure were adopted for theoretical analysis. The gas …
اقرأ أكثر
Phosphorus Removal of High Phosphorous Oolitic Iron Ore …
In this study, a combination of alkali roasting and hydrothermal treatment is used as a method of gangue (Si, Al, and P) removal from iron ores as a means to upgrade low-grade iron ore (limonite ...
اقرأ أكثر
Phosphorus removal from high phosphorus oolitic iron ore …
The result shows that the iron ore concentrate, assaying 62.35% iron and 0.20% phosphorus content are achieved at the overall iron recovery of 90.54% and dephosphorization of 87.42% under the ...
اقرأ أكثر
Recovery of iron and phosphorus removal from Gara Djebilet iron ore …
The results show that under the proper conditions, a final metallic iron powder assaying over 91% Fe and 0.25% P was obtained with iron recovery of 90% and phosphorus removal rate of 91.79% using ...
اقرأ أكثر
Removal of Phosphorus from Lisakovsky Iron Ore by a …
Process oriented characterisation of oolitic iron concentrate during dephosphorisation by roasting and leaching. Krassimir Ionkov O. Gomes R. Neumann S. Gaydardzhiev Armando Corea de Araujio. Materials Science. 2016. Phosphorus in iron ores is considered as a deleterious component to iron making reflecting in cold …
اقرأ أكثر
Floatability studies of wavellite and preliminary results on phosphorus
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 ...
اقرأ أكثر
Improvement of phosphorus removal from iron ore …
The possibility of phosphorus removal from high phosphorus iron ore using combined microwave pretreatment and ultrasonic treatment was studied. The …
اقرأ أكثر
Ultrasonic treatment of high phosphorus Australian iron ore …
The trends and efficacy of ultrasonic pre-treatment before desliming high phosphorus Australian iron ore fines was investigated in the presented fundamental study. The −1 mm iron ore fines (57.5 wt% Fe, 2.47 wt% Si, 2.15 wt% Al, 0.132 wt% P) were subjected to sonication while the ultrasonic power, duration and pumping direction were …
اقرأ أكثر
REMOVAL OF PHOSPHORUS THROUGH ROASTING …
The present study is devoted to improvement of the leaching efficiency during phosphorous removal from high phosphorous gravity-magnetic concentrate. Before leaching the concentrate has been subjected to roasting with the addition of either Ca(OH) 2. or CaO. The oolitic iron ore is roasted at 900°C for one hour.
اقرأ أكثر
The removal of phosphorus from iron ore by leaching with nitric acid
The removal of phosphorus from iron ore by leaching with nitric acid. Hydrometallurgy, 21: 255-275. A hydrometallurgical method for the removal of phosphorus from iron ore is presented. The apatite content ( ~ 1% ) of a Swedish ore is removed ( > 95 % ) by leaching the ore with nitric acid. The iron loss is less than 0.05% …
اقرأ أكثر