dephosphorization treatment high phosphorus iron ore

Dephosphorization of high phosphorus oolitic hematite by ...

Aug 01, 2017· Xia et al. (2011) studied the phosphorus removal from high phosphorus iron ores by selective HCl leaching, and the content of phosphorus in iron ore can comply completely with the requirements of steel production after the dephosphorization reaction. Iron ore with Fe < 60% can be used as raw material to produce the direct reduced iron, by coal ...

NTERNATIONAL OURNAL OF SCIENCES AND NGINEERING OL …

iron ore is of low silicon module, fine texture and contains about1.4-2.0% phosphorus. The high phosphorus content is the major set back in the use of Agbaja iron ore in the blast furnace or direct reduction process (Alafara et al 2005). Chemical leaching of an iron ore involves the attack on the

Strengthening iron enrichment and dephosphorization of ...

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 studied by X-ray diffraction (XRD ...

Microwave Assisted Liberation of High Phosphorus Oolitic ...

The influence of microwave treatment on the liberation of iron ore from the high phosphorus oolitic iron ore from Aswan region, Egypt was studied. The effect of microwave power, exposure time and grain size on the liberation of iron ore was investigated. The microfractures and cracks of the samples were characterized before and after microwave treatments.

Dephosphorization of Iron Ore Bearing High Phosphorous by ...

The behavior of phosphorus in the solid state pre-reduction and dephosphorization treatment processes of high phosphorus iron ore by mechanical crushing and …

Dephosphorization Treatment of High Phosphorus Iron Ore by ...

The dephosphorization treatment of the pre-reduced iron ore by me-chanical crushing and screening methods was evaluated as a function of the initial reduction condition, screen size, and the mechanical property of the reduced iron ore phase. KEY WORDS: high phosphorus iron ore; dephosphorization treatment; solid state reduction; mechanical

Lithium - Wikipedia

Lithium (from Greek: λίθος, romanized: lithos, lit. 'stone') is a chemical element with the symbol Li and atomic number 3. It is a soft, silvery-white alkali metal.Under standard conditions, it is the lightest metal and the lightest solid element.Like all alkali metals, lithium is highly reactive and flammable, and must be stored in vacuum, inert atmosphere or inert liquid such as ...

Dephosphorization Treatment of High Phosphorus Oolitic ...

Dephosphorization process of high phosphorus oolitic iron ore by acid leaching and leaching kinetics were investigated in the paper. The high phosphorus ore samples (51%T.Fe, 0.52%P) used in this work were analysed by SEM-EDS and XRD, which showed their oolitic structure and mineral phases.

Selective Liberation of High-Phosphorous Oolitic Hematite ...

Jun 07, 2018· The two-stage treatment can achieve selective liberation of oolitic hematite, which is beneficial to the following magnetic separation. Keywords: oolitic hematite; microwave; acid leaching; selective liberation; dephosphorization 1. Introduction As a typical refractory iron ore, high-phosphorus oolitic hematite is distributed widely and is

Advance in dephosphorisation of high phosphorus iron ore ...

In order to make good use of huge amount of high phosphorous iron ore for the ironmaking industry, the characteristics and advances in the dephosphorization technologies of high phosphorus iron ore were introduced, such as mill run, chemical leaching, bio-leaching and high-temperature dephosphorization …

investigation of ductile iron dephosphorization

Dephosphorization Treatment of High Phosphorus Iron Ore by Pre ... Jan 1, 2011 ... The dephosphorization treatment of the pre-reduced iron ore by mechanical ... of the Hamersley high phosphorus iron ore used in this investigation. ..... the elongation of the ductile reduced iron particles and the entrapment of...

Dephosphorization Treatment of High Phosphorus Iron Ore by ...

This paper proposes a novel process for the pre-treatment of high phosphorus iron ore by pre-reduction, air jet milling and screening methods. The dephosphorization behavior was evaluated as a function of such parameters as the milling gas kinetic energy, E k and specific energy consumption, E sp .

Removal of Phosphorus From High Phosphorus Iron Ores by ...

May 01, 2011· In this paper, the effect of reaction time, high phosphorus iron ore particle size, dephosphorization agent concentration, stirring strength (G), liquid- solid ratio (amount of leaching solution with differ- ent concentration/amount of iron ore, different liq- uid-solid ratios represent different addition of acid) and reaction temperature on ...

Strengthening iron enrichment and dephosphorization of ...

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 studied by X-ray diffraction (XRD), vibration ...

DEPHOSPHORIZATION OF OOLITIC GOETHITE IRON ORE BY …

The iron ore used in this work is a typical oolitic goethite iron ore with high phosphorus. The current concentrate, obtained from gravity-magnetic separation, contains low iron grade (Fe ~49%) and high phosphorus content (P 0.7~0.8%). The usage of this ore is quite limited. Roasting and subsequent leaching is a way for

Dephosphorization Treatment High Phosphorus Iron Ore

Dephosphorization treatment high phosphorus iron ore,Our company is a large-scale heavy enterprise that taking heavy mining machinery manufactory as main products and integrated with scientific research, production, and marketing. We are concentrating on producing and selling machines such as jaw crusher, cone crusher, hammer crusher, ball mill, sand maker, mobile crushing plant

Dephosphorization of High-Phosphorus Iron Ore Using ...

High-phosphorus iron ore is traditionally dephosphorized by chemical process with inorganic acids. However, this process is not recommended nowadays because of its high cost and consequent environmental pollution. With the current tendency for development of a low-cost and eco-friendly process, deph …

Effect of Process Variables on the Oxidative ...

Dephosphorization of Agbaja Iron Ore 1Philomena K. Igbokwe, 2Esther O. Eze 1, 2 Department of Chemical Engineering, Faculty of Engineering, Nnamdi Azikiwe University Awka, Anambra state, Nigeria Abstract: Effect of process variables on the oxidative dephosphorization of high -phosphorus Agbaja iron ore …

Dephosphorization Treatment of High Phosphorus Iron Ore by ...

The behavior of phosphorus in the solid state carbother-mic reduction process and the dephosphorization treatment of high phosphorus iron ore by pre-reduction, mechanical crushing and screening methods were discussed in the pre-vious work.1,2) The reduced iron ore phases were character-ized according to their behavior under uni-axial mechanical

Removal of Phosphorus from High Phosphorus Iron Ores in ...

In the process of resource utilization of high phosphorus iron ores, phosphorus should be removed first. Compared to other dephosphorization methods, selective leaching with acid has special advantages such as high dephosphorization ratio, low iron loss and so on. However, a large amount of acidic wastewater containing phosphorus was produced after acid leaching.

Elias Matinde | Tohoku University - Academia.edu

The main objective was to investigate the behavior of phosphorus in the solid state carbothermic reduction process, and to develop a dephosphorization pre-treatment process of the high phosphorus iron ore.

Dephosphorization of High-Phosphorus Iron Ore Using ...

Mar 31, 2015· High-phosphorus iron ore is traditionally dephosphorized by chemical process with inorganic acids. However, this process is not recommended nowadays because of its high cost and consequent environmental pollution. With the current tendency for development of a low-cost and eco-friendly process, dephosphorization of high-phosphorus iron ore through microbial process with …

Removal of Phosphorus From High Phosphorus Iron Ores by ...

May 01, 2011· The selective HCl leaching method was used to remove phosphorus from high phosphorus iron ores. The hydroxyapatite in high phosphorus iron ores was converted into soluble phosphate during the process of HCl leaching. The effects of reaction time, particle size, hydrochloric acid concentration, reaction temperature, liquid-solid ratio and stirring strength on the dephosphorization …

Process simulation of dephosphorization treatment of hot ...

In the case of the double slag operation, although steel production became possible, the unit consumption of lime increased to 20 kg/t or more. The obtained results established the high potential of the hot metal dephosphorization process for the treatment of hot metal with high phosphorus content.

BENEFICIATION, DEPHOSPHORIZATION AND DESULPHURIZATION OF ...

phosphorus iron ore (Cheng et al, 1999; Dukino et al, 2000). If steel is produced with high level of phosphorus and sulphur that steel will be brittle and can easily crack hence the need for dephosphorization and

Dephosphorization Treatment of High Phosphorus Iron Ore by ...

Feb 15, 2011· The behavior of phosphorus in the solid state pre-reduction and dephosphorization treatment processes of high phosphorus iron ore by mechanical crushing and screening methods were investigated in the present work. The reduction behavior of high phosphorus iron ore by carbonaceous materials was evaluated as a function of reduction temperature, reduction …

Dephosphorization of agbaja iron ore

Dephosphorization of agbaja iron ore Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Dephosphorization of agbaja iron ore, quarry, aggregate, and different kinds of minerals.

journals on dephosphorization of iron ore

study on dephosphorization technology for high-phosphorus iron ore ... In this paper,the importance of dephosphorization process in treatment of highphosphorus iron ore …