Effect of calcium compounds on direct reduction and …
phosphorus removal of high-phosphorus iron ore WU Shi-chao()1, LI Zheng-yao()1*, SUN Ti-chang()1, ... were hematite and magnetite. 48.61% of phosphorus existed in apatite, while 47.22% of phosphorus was distributed in iron minerals in the form of Fe 3PO 7
Iron ore
Iron ores [1] are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of
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 speciation.
Iron recovery and dephosphorization behaviors from …
them, high-phosphorus oolitic hematite (HPOH) is a competitive choice since it has a relatively high iron content (average 52%) and a large reserve of 3.72 9 109 t, accounting for about 7% of the total iron ore resources in China [3, 4]. However, HPOH has high phosphorus content and a unique small-particle oolitic structure, which makes
Understanding the high-grade iron ore market
The high-grade iron ore market is largely aligned with iron ore as a commodity in general. In the real world, however, iron units are not fungible ... phosphorus and sulfur, which can affect ... plants may be optimised to use one over the other. Magnetite has a slightly higher Fe content as a mineral (72.36% vs 69.94% for hematite), and its ...
Enhanced iron extraction from high-phosphorus waste limonite ore …
Using the process of suspension magnetization roasting followed by magnetic separation and flotation to treat high-phosphorus iron ore, Zhang et al. [26] found that the Fe grade increased from 42.93 % to 59.50 % and the P content decreased from 0.58 % to 0.32 %, and near half of the phosphorus remained in the residual apatite after iron selection.
Gasification and Migration of Phosphorus from High-phosphorus Iron Ore
High-phosphorus oolitic hematite is a potential iron ore resource. China and Europe have 4–5 billion tons and more than 14 billion tons of iron reserves, respectively.1–4) Corresponding resources have also been reported in the United States and Egypt.5) On account of the high content of phosphorus in the iron ore, which adversely affects the quality of pig iron …
Phosphorus and Other Impurities in Australian Iron Ores
Phosphorus is a major contaminant in steelmaking and current specifications for iron ore, the feedstock used in steelmaking, requires ores averaging less than 0.08% P (bulk). In Australia, the majority of iron ore feedstock production is a blend of low-P (<0.05% P) hematite-rich ores and more common high-P (>0.10% P) goethite-rich ores.
Experimental study on parameters optimisation of adding …
DOI: 10.1177/030607 Corpus ID: 273734410; Experimental study on parameters optimisation of adding vanadium-titanium magnetite to iron ore pellet @article{Kou2024ExperimentalSO, title={Experimental study on parameters optimisation of adding vanadium-titanium magnetite to iron ore pellet}, author={Ming-yin Kou and Pengfei Ji …
Australian Magnetite Ore 2023 Factsheet
.Hematite and magnetite are the two main iron ore minerals in Australia, with hematite being Australia's main iron ore export. Hematite ore is typically higher-grade than magnetite ore, with approximately 60% contained iron whereas magnetite ore has grades in the order of 30% contained iron. However, magnetite can be converted to a higher-grade
Review on High Phosphorous in Iron Ore: Problem and Way …
Phosphorous is an undesired element present in iron ore used in the steel making process. It leads to an increase in overall production cost as well as deteriorated steel quality. The desired phosphorus content in iron ores used in steel making is < 0.1%. Numerous beneficiation studies are mentioned in the literature; however, there is no commercial scale technology established …
Effect of calcium compounds on direct reduction and phosphorus …
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.
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.
Enrichment of Apatite -Bearing Iron Ore by Magnetic
separators are widely used to upgrade magnetite ores. Phosphorus is an important impurity and almost all of the phosphorus in iron ore transferred directly into cast iron during metallurgical processes. It is well known that steel containing high phosphorus is brittle, and therefore dephosphorization of iron ore is an important research topic.
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 mechanism was investigated …
An innovation for strengthen iron extraction from …
In this work, an innovation which includes processes of grinding, suspension magnetization roasting, and flotation was proposed for efficient utilizing the High-phosphorus …
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 …
Phosphorus Gasification during the Carbothermic …
2.1.1. Medium Phosphorous Magnetite Ore The medium phosphorus magnetite ore (hereafter referred as raw ore) used in this work was provided by the Bayan Obo iron ore in Baotou, China. The main chemical com-position is listed in Table 1. The total iron grade is as low as 31.70 mass% and phosphorus content is as high as 0.91 mass%.
Direct Reduction of High-Phosphorus Oolitic Hematite: …
High-phosphorus (P) iron ore, particularly oolitic hematite, has remained unexploited due to technological and cost limitations in mining. Effectively developing this ore …
Optimized Steelmaking from High Phosphorus Ores …
European steel producers' ore supply, originate today mainly from iron rich magnetite ore deposits, most of which are contaminated with phosphorus. Over the years the mining companies have carried through various mea- ... otherwise based on low-iron high phosphorus ores like the minette ores of central Europe. The KDF sinter fines is a high ...
Unlocking the potential of magnetite ore for Australia's iron …
Fortescue Metals Group (FMG) has commenced production of high-quality magnetite iron ore from the Iron Bridge mine with an annual capacity of 22 million tonnes. This development presents an excellent opportunity to address the potential scarcity of DR-grade iron ore needed to support the steel sector technology transition.. Direct reduced iron (DRI) based …
Amenability for processing of oolitic iron ore concentrate for
The oolitic gravity magnetic (GM) iron concentrate was supplied by the Lisakovsky iron ore beneficiation plant in Kazakhstan. The plant flowsheet involves ore sieving at 1.6 mm and desliming with further processing through gravity (jigging) and magnetic (low and high intensity) separation stages.The obtained GM concentrate therefore has a relatively narrow particle size …
A New Route to Upgrading the High-Phosphorus Oolitic …
In this paper, an innovative method is proposed to upgrade iron and remove phosphorus from high-phosphorus oolitic hematite ore by the sodium magnetization …
Enhanced iron extraction from high-phosphorus waste …
To solve these problems, a novel method was proposed in this work for enhancing iron extraction and dephosphorization from high phosphorus limonite by suspension …
Dephosphorization Treatment of High Phosphorus Iron …
ley high phosphorus iron ore used in this investigation. The chemical composition was determined by ICP-AES method, and the sulphur and carbon contents were analyzed ... Magnetite can also be reduced directly to metallic iron since wüstite is …
(PDF) ENRICHMENT OF APATITE-BEARING IRON ORE BY …
Phosphorous is a major contaminant for the vast majority of uses of iron ores, especially all related to iron making. It is found in a variety of forms from separate phosphate minerals to intimate ...
Increasing Iron and Reducing Phosphorus Grades …
High-phosphorus oolitic iron ore, treated by suspended flash magnetic roasting, contained 42.73% iron (mainly present as magnetite) and 0.93% phosphorus (present as collophane)....
The Behavior of Phosphorus in the Hydrogen‐Based Direct …
Unbeneficiated magnetitic iron ore was used in this study; the relatively high phosphorus content facilitates the detection via scanning electron microscope with energy-dispersive X-Ray spectroscopy (SEM-EDS). Table 1 shows the chemical composition of the raw and oxidized samples. A lump sample with grain sizes between 10 and 16 mm was reduced ...
Selective Reduction of Iron in High-Phosphorus Oolitic Ore …
Reduction of iron in high-phosphorus oolitic ore from the Lisakovsk deposit using solid carbon, carbon monoxide, and hydrogen. An X-ray phase analysis was used to determine the phase composition of the samples after reduction roasting. When reduced with carbon monoxide or hydrogen, α-iron appears in the samples, while phosphorus remains in the form of …
Phosphorus Migration Behavior of Medium …
Bayan Obo iron ore was used as the raw ore in this work, and its chemical and phase composition are presented in Table 1 and Fig. 1, respectively. The total iron content of raw ore is 31.70 wt% and this iron mainly exists as magne-tite; the phosphorus content reaches 0.91 wt% and mainly exists as apatite.