This paper reports the experimental results on ore beneficiation, pretreatment of hot metal with high phosphorus and dephosphorization during direct reduction. It would provide technology support for the efficient utilization of high phosphorus Oolitic Hematite, and also provide technology for industrial demonstrating projects.
Effects of Particle Sizes of Iron Ore and Coal on the Strength and Reduction of High Phosphorus Oolitic Hematite-coal Composite Briquettes Wen YU, Tichang SUN,* Zhenzhen LIU, Jue KOU and Chengyan XU School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083 China.
Acid leaching is an effective method for the dephosphorization of high phosphorus oolitic hematite. The acid leaching experiments were conducted to study the effect of acid concentration, temperature, leaching time, solid-liquid (S/L) ratio and the stirring speed on the dephosphorization of the high phosphorus oolitic hematite.
2.1.1. Oolitic Hematite Ore The oolitic hematite ore with high phosphorus content used in the paper was collected from Western Hubei, China. The chemical composition of oolitic hematite raw ore is shown in Table1. The main ingredients contained in the sample were 41.50 wt. % Fe and 17.04 wt. % SiO2, while the content
Oolitic hematite has thin mosaic granularity hematite and it is mutual packages with siderite, chamosite and phosphorus-containing mineral which makes oolitic hematite iron grade and phosphorus content difficult to achieve the requirements of smelting, and become one of the most refractory hematite iron ore processing and machine recognized at ...
Development of Technologies for High Phosphorus Oolitic Hematite . Feb 2, 2011 With increasing consumption of iron ore over the world, new technology of beneficiation and smelting is more urgently needed than ever before. Get Now. Iron ore - Wikipedia.
Ningxiang oolitic hematite is a unique type of sedimentary iron ore. The proven reserves of this type of iron ore is 3.72 billion tons accounting for ~11% of the iron ore resources in China. The iron content of this type of iron ore is ~20–45%, the quartz content is ~15–35%, and the phosphorus content is ~0.4–1.1% or higher.
An oolitic haematite ore containing 1.31% P was reduced in the presence of coal at temperatures ranging from 1473 to 1548 K. The reduction behaviour of apatite, which is the only P-containing mineral in the ore, was studied at different reduction conditions based on the thermodynamic analysis.
carbide prepared from high phosphorus oolitic hematite in an H 2/CH 4 atmosphere is a soft magnetic material with relatively high magnetic properties. Introduction Iron carbide (Fe 3C), as a kind of functional material, can be used as an information material1,2 or an electromagnetic
Coal-based direct reduction followed by magnetic separation technique was employed to produce direct reduction iron powder (DRI powder) from a high-phosphorus oolitic hematite ore, and the effects of type and particle size of coal and C/O (Fixed carbon/Oxygen) mole ratio on this process were investigated.
The heating rate of high phosphorus oolitic iron ore was studied. Crystallinity of hematite was characterized before and after microwave pretreatment. The results indicated that intergranular fractures formed between the gangues (fluorapatite and chamosite) and hematite after microwave treatment, leading to improved liberation of iron ore and a ...
Innovative Method for Separating Phosphorus and Iron from High-Phosphorus Oolitic Hematite by Iron Nugget Process HONGLIANG HAN, DONGPING DUAN, XING WANG, and SIMING CHEN This study puts forward a new method to separate phosphorus and iron from high-phosphorus oolitic hematite through iron nuggets process.
The results indicated that microwave processing can reduce the mechanical strength of oolitic hematite and improve the liberation of hematite, and acid leaching can improve the microwave-assisted liberation efficiency and reduce the content of phosphorus in the grinding product.
Development of Technologies for High Phosphorus Oolitic Hematite . Apr 7, 2011 With increasing consumption of iron ore over the world, new technology of beneficiation and smelting is more urgently needed than ever before ... Environmental impact of phosphate mining and beneficiation: review. Jul 5, 2018 in appreciating the mining and processing ...
of phosphorus from high-phosphorus oolitic hematite ore, which is known as coal-based direct reduction-magnetic separation method. 2–6) In the process, hematite is reduced to Get Price equipment to separate titanium from iron ore.
2012710 Method of processing an iron ore containing phosphorus, the iron ore . 2013 A review of the beneficiation of rare earth element bearing minerals roasting and FeP separation of high-phosphorus oolitic hematite ore.
Low grade oolitic iron ore from the Aswan locality, assaying 45.23% Fe and 23.93% insoluble residue, was tested for concentration using reduction roasting and subsequent low intensity magnetic separation for the production of blast furnace feed. The ore is a low grade, high phosphorus, and high alumina oolitic hematite.
Jul 06, 2018· Quantitative Investigation of Roasting magnetic Separation for Hematite Oolitic ores: Mechanisms and Industrial Application. Tiefeng Peng. Get Price. ... and phosphorus as impurities from Sanje iron ore using wet high intensity magnetic separation (WHIMS). Sanje iron ore contains low grade hematite ore found.
chlorite and apatite observed in the oolitic hematite. Chemical phases and distribution of phosphorus in oolitic hematite ore is listed in Table2. It is noted that the phosphorus mainly occurs in apatite, which accounts for 94.76% of the total phosphorus. Table 2. Chemical phases and distribution of phosphorus in oolitic hematite ore /wt. %.
Study on Phosphorus Removal of High-Phosphorus Oolitic Hematite by In this article, mineralogical phase changes and structural changes of iron FeAl2O4 Fe depending on the micro mineralogical makeup of the ore. Roasting Followed by Magnetic Separation: A Process for Beneficiation of …
Dephosphorization Treatment of High Phosphorus Oolitic Iron Ore by Hydrometallurgical Process and Leaching Kinetics Jintao Yu 1), Zhancheng Guo 1), ... Furthermore, hematite phase was hardly corroded and could be regarded as inert materials. For liquid-solid reaction process, hydrogen ion diffused from the bulk solution through liquid film to ...
high phosphorus oolitic hematite, which is one of the most refractory ores in China. One ninth of China's iron ore resources are oolitic hematite, in which 30−40 billion tons are high phosphorus oolitic hematite. Therefore, the studying and utilization of these resources has important strategic significance to relieve the contradiction
Hematite, also spelled as haematite, is the mineral form of iron(III) oxide (Fe2O3), one of several iron oxides. It is the oldest known iron oxide mineral that has. Contact US Mechanism of phosphorus removal in beneficiation of high . High phosphorous oolitic hematite ore is …
The oolitic hematite with a lower iron content and a higher phosphorus content will be a potential source of raw iron ore for the Chinese iron and steel industry. The magnetization reducing roasted and magnetic separation is a practical beneficiation process.
Oolitic hematite ore, characterized by complex mineral phases, unique concentric oolitic texture and high phos-phorus content, is considered to be one of the most refrac-tory iron ore resources. It is widely distributed in France, Canada, Saudi Arabia and China.1) There are approximately 22 billion tons of high-phosphorus iron ores with an average
A high phosphorus-containing oolitic hematite ore was collected from Enshi, China. Table1 displays the chemical composition of the ore sample, which contains 42.21% total iron and some impurities, including 21.80% SiO2, 5.47% Al2O3, 4.33% CaO, and 1.31% phosphorus.
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Development of Technologies for High Phosphorus Oolitic Hematite . Apr 7, 2011 With increasing consumption of iron ore over the world, new technology of beneficiation and smelting is more urgently needed than ever before