Strengthening iron enrichment and dephosphorization of …
Abstract. The efficient development and utilization of high-phosphorus oolitic hematite is of great strategic significance for the sustainable supply of iron-ore …
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 …
A new iron recovery and dephosphorization approach from …
A new iron recovery and dephosphorization approach from high‑phosphorus oolitic iron ore via oxidation roasting-gas-based reduction and …
Clean production of Fe-based amorphous soft magnetic …
This study offered a novel strategy for the direct production of FePC amorphous soft magnetic alloys via smelting reduction of high-phosphorus iron ore (HPIO) and apatite.
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 …
Characterization studies on Agbaja iron ore: a high …
Iron ores can be classified with respect to their phosphorus content as low-phosphorus ore (< 0.07% P), medium-phosphorus ore (0.07–0.10% P), or high …
Mixture of ilmenite and high phosphorus iron ore …
Key words: smelting reduction; ilmenite; high phosphorus iron ore; iron recovery; dephosphorization 1 Introduction With the quick growth of iron and steel industry in China, more and more iron ore are demanded. China has become one of the world's largest importers of iron ore. Iron ore resources in China are abundant but the number
A novel and clean utilization of converter sludge by co …
A metalized iron-phosphorus alloy with assaying of 96.51% iron and 2.03% phosphorus was obtained at 1623K for 10 min at corresponding iron and phosphorus recovery rates of 97.50% and 64.51% ...
Effect of additives on iron recovery and …
separation of iron and phosphorus in high-phosphorus iron ore. 2. Experimental 2.1. Materials The high-phosphorus iron ore considered in this study was obtained from a foreign mine, and is referred to as raw ore. The chemical composition of the raw ore is presented in Table 1. The total iron grade and phosphorous content were
A new way to efficient utilization of eggshell waste: As green
Reduction roasting of high-phosphorus oolitic iron ore (HPOIO) requires the addition of expensive alkali metal compounds to enhance dephosphorization. In this paper, the eggshell waste from the catering industry was used to replace traditional dephosphorization agents, which not only avoided environmental problems caused by …
Phosphorus-Containing Mineral Evolution and …
Rotary hearth coal-based direct reduction has potential for the efficient utilization of high-phosphorus iron ore [2]. At present, many studies exist regarding the direct reduction of high-phosphorus iron ore [3–7]. The key to the direct reduction of high-phosphorus ore is to increase
Characterization by high performance liquid
The use of metabolic products of aPenicillium-like fungus to leach insoluble phosphates (hydroxyapatite) from ores to suggest biological alternatives to costly leaching procedures that use only mineral acids. SummaryThe value of iron ore is adversely affected by phosphorus in concentrations over 0.03% by weight. The present research …
Hyperphosphatemia: Causes, Symptoms & Treatment
Hyperphosphatemia causes include: Advanced chronic kidney disease. Hypoparathyroidism. Lower-than-normal blood pH (increased acids in the blood) because your lungs can't remove all of the carbon dioxide your body produces (respiratory acidosis). Lower-than-normal blood pH for other reasons (metabolic acidosis).
Smelting Potential of HIsmelt Technology for High …
The results showed that it is very suitable for smelting ilmenite, and iron recovery rate reached 95% with titanium content lower than 0.05% (under the conditions of 30 min holding time at 1550 ...
Phosphorus migration mechanism between iron and high
The iron ore deposits have exhibited an increasingly complex mineralogical composition nowadays with the rapid consumption of iron ore resource around the world [1,2,3].Statistically, the identified premium grade iron ore with phosphorus content lower than 0.05 wt% will be depleted within 30 years at the current rate of mining [4, 5].Thus, …
Industry Test on Phosphorus Removal and Direct Reduction of High
Industry test on phosphorus removal and direct reduction of the "Ningxiang type" high-phosphorus oolitic hematite ore has been carried out in a tunnel kiln on the basis of laboratory experiment. The iron grade and phosphorus content of the initial sample are 42.46% and 0.867%, respectively. The results showed that high …
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 …
A new way to efficient utilization of eggshell waste: As green
The cleaning and efficient disposal of eggshell waste presents many challenges. Reduction roasting of high-phosphorus oolitic iron ore (HPOIO) requires the addition of expensive alkali metal compounds to enhance dephosphorization.In this paper, the eggshell waste from the catering industry was used to replace traditional …
A new iron recovery and dephosphorization approach from high‑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 ...
Dephosphorization of High-Phosphorus Iron Ore Using
High-Phosphorus Iron Ore. The ore sample used in this study was obtained from western Hubei province, China. The ore sample was ground to a particle size of 0.07–0.15 mm. X-ray diffraction (XRD) analysis showed that the sample was mainly composed of hematite (α-Fe 2 O 3) and a small quantity of quartz and apatite (Ca 2 PO …
Ultrasonic treatment of high phosphorus Australian iron ore …
The efficacy of ultrasonication for phosphorus removal from iron ore fines is expected to be largely dependent on the modes of deportment of the phosphorus …
XPS and FTIR spectroscopic study on microwave treated high phosphorus …
XPS survey scans of high phosphorus iron ore indicated the presence of Fe, O, Si, Ca and P (Fig. 13, Fig. 14, Fig. 15). It can be seen that the shift in the Fe (2p) peak binding energy corresponds to iron oxide as a main component of the iron ore whereas the shift in the O (1s) peak corresponds to oxygen, phosphate and iron oxides …
Dephosphorization Treatment of High Phosphorus Oolitic Iron Ore …
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. Among the three kinds of acids …
A novel and clean utilization of converter sludge by co …
A novel and clean utilization of converter sludge by co-reduction roasting with high phosphorus iron ore to produce powdery reduced iron @article{Wu2022ANA, title={A novel and clean utilization of converter sludge by co-reduction roasting with high phosphorus iron ore to produce powdery reduced iron}, author={Shichao Wu and Ti …
(PDF) Mixture of ilmenite and high phosphorus iron ore …
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 ...
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 …
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 …
Influence of Sodium Salts on Reduction Roasting of High …
The effect of sodium salts (Na 2 CO 3, NaCl and Na 2 SO 4) on reduction roasting and magnetic separation of high-phosphorus oolitic iron ore containing …
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 ...
Phosphorus in Iron Ore from the Hamersley Iron …
The phosphorus content of the banded iron formation (BIF) and of the associated iron ore deposits in the north west of Western Australia is known to vary widely, a fact which has considerable econ~mic significance. Trendall and Blockley (1970) have described the variety of textural appearances of apatite in the Hamersley Group BlF, and suggest that …