High-phosphorus iron ore has been paid extensive attention because of the difficulty of effective separating iron and phosphorus. There exists an abundance of high-phosphorus iron ore resources in China, up to 7.45 billion tons distributed primarily in Hubei, Jiangsu, Yunnan, and Anhui provinces [1,2,3].Currently, owing to the high …

For instance, China is reported [ 21] to be rich in high-phosphorus iron ores, constituting some 14.86% of total reserves and …

In the traditional roasting process of high-phosphorus iron ore (HPIO), a large amount of sodium or calcium salt needs to be added to enhance iron recovery and dephosphorization, which leads to an increase in production costs. In this paper, the co-reduction roasting followed by magnetic separation process was designed to realize the …

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 …

China is rich in high phosphorus iron ore resources, accounting for more than 10% of the total iron ore resources, so the development and utilization of high-

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.

With the development of China's iron and steel industry, the demand for iron ore is increasing, and the contradic-tion of iron ore shortage is prominent.1,2) China is rich in …

Gaseous reduction kinetics of the high phosphorus iron ore fines from Hubei in China and effect of microwave pretreatment on the gaseous reduction behavior were studied. Gaseous reduction kinetics were investigated by TG (Thermogravimetric) methods using LINSEIS STA PT 1600 thermal analysis equipment. Microwave pretreatments to …

To understand the migration mechanisms of phosphorus (P) during coal-based reduction, a high-phosphorus oolitic iron ore was reduced by coal under various experimental conditions. The migration characteristics and kinetics of P were investigated by a field-emission electron probe microanalyzer (FE-EPMA) and using the basic …

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 …

In this paper, the gasification behavior of phosphorus in hydrogen-rich sintering process of high-phosphorus iron ore was studied. Thermodynamic calculation of possible reactions is carried out by using FactSage6.1 software, and the phase transformation and distribution of phosphorus in the process of roasting reduction were analyzed by XRD ...

domestic iron ore resources though most of them are either refractory or of low grade.2–4) A large deposit of about 20 billion ton of high phosphorus iron ore is in the Huimin region of Yunnan Province,5) and the limonite ore with an average of 0.80% phosphorus and 34% iron contributes to about 20% of the Huimin iron reverse. The lack of under-

Powder Technology. Volume 413, January 2023, 118043. A new iron recovery and dephosphorization approach from high‑phosphorus oolitic iron ore via oxidation …

Article. Phosphorus-Containing Mineral Evolution and Thermodynamics of Phosphorus Vaporization during Carbothermal Reduction of High-Phosphorus Iron …

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 …

Wuhan Iron and Steel, China. Its chemical analysis (Table 1) indicates a high phosphorus content of 1.1 wt% as. ... Dephosphorization is essential for utilizing high-phosphorus iron ore (HPIO ...

The reduction behavior of high-phosphorus iron ore was evaluated as a function of reduction temperature, C/O molar ratio, and CaO addition. ... The high-phosphorus iron ores from China were used for the experiments. Firstly, iron ore samples were characterized by X-ray Diffraction (XRD) (Bruker-AXS, D8 Advance) using Cu Kα …

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 …

This paper analyzed the preponderances of smelting high-phosphorus iron ore and ilmenite by HIsmelt technology, which is reserved vastly in China. 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 °C ...

Comprehensive Utilization of Iron and Phosphorus from High-Phosphorus Refractory Iron Ore. Toward Resources and Processes Sustainability: Part I. Published: …

A new method to process the oolitic high phosphorus iron ore for phosphorus removal has been proposed in this research. It is an integration of direct reduction and ... a high-phosphorus oolitic iron ore containing 44.70% Fe and 1.56% P from western Hubei of China was collected as the sample. The chemical composition, …

A thermodynamic analysis of the carbothermic reduction of high-phosphorus oolitic iron ore (HPOIO) was conducted by the FactSage thermochemical software. The effects of temperature, C/O ratio, additive types, and dosages both on the reduction of fluorapatite and the formation of liquid slag were studied. The results show …

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]. …

With the development of China's iron and steel industry, the demand for iron ore is increasing, and the contradic-tion of iron ore shortage is prominent.1,2) China is rich in high-phosphorus iron ore reserves, but due to its high phosphorus content, complex mineral phase structure and

High-phosphorus iron ore is a typical refractory iron ore, and is mainly distributed in the United States, France, Britain, Canada, Algeria, Nigeria, Kazakhstan, and China, with a total reserve of more than 2 × 1010 t [6–8]. Owing to the complex structure and high phosphorus content of this ore, iron con-

This paper analyzed the preponderances of smelting high-phosphorus iron ore and ilmenite by HIsmelt technology, which is reserved vastly in China. The results showed that it is very suitable for ...

The phosphorus migration mechanism during melting separation of non-carbon-reduced high phosphorus iron ore was investigated. Firstly, the equilibrium compositions of hydrogen-reduced high ...

As a typical complex refractory iron ore, high phosphorus oolitic hematite (phosphorus content is 0.4-1.8%) accounts for about 7% of the total iron ore resources in China, with a total amount of 3 ...

Low-grade phosphorus-containing iron ore (LGPIO ) is an industrial solid waste, which comes from mining high phosphorus iron ores. LGPIO is becoming a serious problem in the world due to the fact that it not only causes landslide and dust pollution, but occupies the land resources.

iron ore and reducing agent. This method can be employed as efficient pretreatment for the treatment of the high-phosphorus iron ore.16–19) Several studies have reported the mechanism for the carbothermal reduction of iron oxides. Fluorapatite is the major constituting phosphorus-bearing mineral in a high-phosphorous iron ore.20) In …