phosphorus removal from iron ore

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 …

Comprehensive Utilization of Iron and Phosphorus from High-Phosphorus …

The iron and phosphorus in high-phosphorus refractory iron ore were successfully recovered using coal-based reduction followed by magnetic separation and the dephosphorization process. The total recoveries of Fe and P were 84.41% and 67.23%, respectively. This process represents an effective approach to the utilization of high …

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 …

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 …

The removal of phosphorus from iron ore by leaching with …

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% while the alkali ...

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 ...

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 …

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 ...

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 …

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.

The removal of phosphorus from iron ore by leaching with nitric acid

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 …

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.

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 …

Floatability studies of wavellite and preliminary results on phosphorus

However, the phosphorus removal from iron ores other than igneous formations has been a challenge for most of the iron ore operations. 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%.

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

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 ...

Recovery of iron and phosphorus removal from Gara Djebilet iron ore …

A highphosphorus oolitic iron ore from Gara Djebilet deposit underwent the procedure of coalbased direct reduction (coalbased DR) followed by wet lowintensity magnetic separation (WLIMS). The effects of temperature, periods of time and Na2SO4 dosage on phosphorus removal, metallisation degree and iron recovery rate were tried and optimised.

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 …

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 ...

Amenability for processing of oolitic iron ore concentrate for

The removal of phosphorus from iron ore using a low temperature heat treatment with additives, followed by alkaline or water leaching, has been tested by Fisher-White et al., (2009), with phosphorus being lowered from 0.145–0.075%. ... To provide a new method for the dephosphorization of high-phosphorus oolitic iron ore (HPOIO) by …

Processes for phosphorus removal from iron ore

Abstract. This paper aims at reviewing literature on the occurrence of phosphorus in iron ores from the mines around the …

Removal of Phosphorus From High Phosphorus Iron …

In order to effectively remove the phosphorus from high phosphorus iron ores, while reduce the amount of acid and the iron losses, phosphorus will be removed in …

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%.

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 …

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 …

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.

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-

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 …

Improvement of phosphorus removal from iron ore using …

The possibility of phosphorus removal from high phosphorus iron ore using combined microwave pretreatment and ultrasonic treatment was studied. The results indicated that microwave pretreatment significantly increases the efficiency of ultrasonic disintegration and the removal of gangues. The improvement in Fe grade and …