The Development of High-Phosphorus Iron Ore Sees a …
— Although this process does not require fine grinding of the ore to separatethe minerals, the dephosphorization rate is high, but some iron will be dissolved, reducing the iron recovery rate. The MgO and CaO content in the iron concentrate will also decrease, reducing the basicity of the concentrate and affecting its self-fluxing properties ...
Exploring the possibilities of biological beneficiation of …
dephosphorization in iron ore processing plants is not always justified, neither from the economical nor the environmental standpoint. This fact has made researchers to turn their
Dephosphorization of Iron Ore Bearing High Phosphorous …
— In recent years, many efforts have been focused on improving the beneficiation of iron and the removal of phosphorus from oolitic hematite ore, such as chemical leaching [3][4][5], bio-leaching [6 ...
DEPHOSPHORIZATION OF AN IRON ORE BY A …
XII ENTMME / VII MSHMT – Ouro Preto-MG, noviembre 2007. DEPHOSPHORIZATION OF AN IRON ORE BY A FILAMENTOUS FUNGUS. Pedro Delvasto 1,2, Antonio Ballester 1, Jesús Angel Muñoz 1, María Luisa ...
Dephosphorisation of western australian iron ore by …
— Semantic Scholar extracted view of "Dephosphorisation of western australian iron ore by hydrometallurgical process" by C. Cheng et al. ... the rate of biodephosphorization and the degree of beneficiation increases. ... Effect of process variables on the oxidative dephosphorization of high -phosphorus Agbaja iron ore were …
Investigation of dephosphorization of brown iron ore …
— Process mineralogy of low-grade laterite nickel ore in Indonesia was systematically characterized and the beneficiation process of mineral components such as limonite, serpentine and chromite was ...
Strengthening iron enrichment and dephosphorization of …
— To investigate the effect of simultaneous change in particle size of raw materials (including ore, reductant, and dephosphorization agent) on the direct reduction process of high-phosphorus ...
Iron ore beneficiation: an overview
— The quality of Indian iron ore resources is generally good with high iron content and high percentage of lumpy ore. More than 85% of the hematite ore reserves are of medium- to high-grade (+62% Fe) and are directly used in blast furnace and in direct-reduced iron (DRI) plants in the form of sized lump ore, agglomerated sinter, and …
A new iron recovery and dephosphorization approach from …
— Deep dephosphorization of high‑phosphorus oolitic iron ore (HPOIO) is extremely difficult because of its refractory characteristics. A new approach for …
Application of biotechnology in iron ore beneficiation
— Bioleaching for phosphorus removal from iron ores. Dephosphorization of iron ore can be achieved through bioleaching. Different methods are needed to remove phosphorus from iron ore depending on whether it is present as a mineral (apatite) or associated with iron minerals (Edwards et al., 2011). Although most phosphorus occurs …
Strengthening iron enrichment and …
— 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 …
[PDF] A novel direct reduction-flash smelting separation process …
Semantic Scholar extracted view of "A novel direct reduction-flash smelting separation process of treating high phosphorous iron ore fines" by Qi-peng Bao et al. ... Recovery of Phosphors by Beneficiation Technology. Jing Guo Bing Li Hao Peng ... (including ore, reductant, and dephosphorization agent) on the direct reduction process of high ...
Beneficiation of High-Phosphorus Siderite Ore by Acid …
Iron grain size in reductive ore without alkaline oxide additive (performed at 10008Cfor 150min with 20% dosage of reductant coal) is tiny, and the fayalite is abundant. Moreover,
Green and efficient separation of iron and phosphorus from …
— The reduction roasting followed by magnetic separation process is considered to be a suitable method to treat the high-phosphorus oolitic iron ore. Currently, the dephosphorization mechanism of ...
Mechanism of phosphorus removal in beneficiation of high …
— [20][21] [22] [23] Low-cost beneficiation is commonly not suitable for complex, finegrained and closely disseminated iron ore due to the low dephosphorization performance and high iron loss. Both ...
Dephosphorization of Iranian iron oxide fines by flotation
— The most important iron ore deposits of Iran, namely Chogart, Gol-e-Gohar, Chador Malu, are located in central Iran. The main iron bearing mineral phases of these deposits were known as magnetite ...
Beneficiation of Iron Ore
— Beneficiation of Iron Ore and the treatment of magnetic iron taconites, stage grinding and wet magnetic separation is standard practice.This also applies to iron ores of the non-magnetic type which after a reducing roast are amenable to magnetic separation. All such plants are large tonnage operations treating up to 50,000 tons per day and …
Effect of additives on iron recovery and …
iron ore, CO is mainly provided through the chemical reac-tion expressed by Eq. (7), and chemical reaction includes the reduction of iron minerals and the conversion of phosphate minerals. The reduction process of iron minerals is clear, and the critical part in the utilization of high-phosphorus iron ore lies in dephosphorization.
Review on Beneficiation Techniques and Reagents Used for …
— Phosphate ore is an important raw material for manufacturing fertilizers and phosphorous chemical products. While most of the phosphate resources cannot be directly treated as feed stock due to the low grade of P2O5 and high content of impurities. In order to obtain a qualified phosphate concentrate, the beneficiation of the low-grade …
Synchronous enrichment of phosphorus and iron from a …
— In this study, direct reduction-magnetic separation process was applied to enrich phosphorus and iron to prepare Fe-P crude alloy from a high phosphorus oolitic hematite ore (HPOH). The results show that at lower temperatures and with absence of any of additives, Fe cannot be effectively recovered because of the oolitic structure is not …
Effect of additives on iron recovery and dephosphorization by reduction
— The effect of CaCO 3, Na 2 CO 3, and CaF 2 on the reduction roasting and magnetic separation of high-phosphorus iron ore containing phosphorus in the form of Fe 3 PO 7 and apatite was investigated. The results revealed that Na 2 CO 3 had the most significant effect on iron recovery and dephosphorization, followed by CaCO 3, the effect …
Investigation of dephosphorization of brown iron ore …
— The results of investigation of sintering and magnetic beneficiation of brown iron ore concentrate are presented. The investigations are based on using a possibility of redistribution of phosphorus from the ore constituents into slag-forming ones in the process of sinter roasting.
Recent process developments in beneficiation and …
— The ratio of bastnaesite to monazite in the deposit is approximately 3:1, and REEs are recycled from iron ore processing tailings. 42, 43 There are three mining areas in the Bayan Obo deposit. The Main Ore Body and West Ore Body were mined by Baotou Iron and Steel Group in 1957, and the West Ore Body was exploited in 2004. 5
Delvasto Exploring the possibilities of biological …
— In biological beneficiation processes it is always recommendable to employ indigenous species to reduce environmental impacts. In this work, authors report the successful activation of the...
Flotation Dephosphorization of High-Phosphorus …
— The feasibility of dephosphorization using the flotation process and its mechanism of high-phosphorus oolitic hematite were discussed in this paper. The results showed that phosphorus minerals …
Exploring the possibilities of biological beneficiation of …
In biological beneficiation processes it is always recommendable to employ indigenous species to reduce environmental impacts. In this work, authors report the successful …
Dephosphorization of high phosphorus oolitic hematite …
— 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, …
Mechanism of phosphorus removal in beneficiation of high …
— Dephosphorization of Western Australian iron ore by hydrometallurgical process [J] Minerals Engineering (1999) ... Oolitic hematite is an iron ore resource with complex refractory characteristics, abundant reserves, and significant recycling value. ... Phase transformation during roasting process and magnetic beneficiation of oolitic-iron …
Green and efficient separation of iron and phosphorus from …
— To provide a new method for the dephosphorization of high-phosphorus oolitic iron ore (HPOIO) by reduction roasting, the feasibility of the high-efficiency separation of iron and phosphorus by reduction roasting and magnetic separation process (RRMSP) without a dephosphorization agent was studied. The results showed that the full …
Research on efficient utilization of high-phosphorus …
which indicates that the ore is an acid iron ore [35]. To determine the state of iron within the ore, Table 2 presents the findings from the chemical phase analysis of iron. The primary iron states in the raw ore were identified as hematite and limonite, comprising 45.52% of the total iron content, with a distribution of 92.26%.
Effect of additives on iron recovery and …
the pig iron. A new process combining beneficiation and smelting, that is, a reduction roasting followed by magnetic separation process that can reduce the iron minerals in …
Application of biotechnology in iron ore beneficiation
— A biomining approach to process low-grade iron ores has the potential to turn closed mines or uneconomic mineral deposits into economic resources. Microorganisms and their metabolites have been commercially applied in the leaching of metals from medium- and low-grade sulfide minerals for many years. Efforts are now being directed …
Iron recovery and dephosphorization behaviors from high …
— After studying the influence of reducing gas flow rate, reduction time, hydrogen–carbon ratio and temperature on reduction behaviors, the optimum conditions …
Beneficiation of High-Phosphorus Siderite Ore by Acid …
— Traditional dephosphorization methods such as beneficiation, 14,15) chemical treating, 16, 17) gas-based reduction, 18,19) direct reduction 20) and microbial leaching, 21) due to their high energy ...
Green and efficient separation of iron and phosphorus from …
— The beneficiation process represented by flotation did not change the internal structure of HPOIO, ... Pilot study of high-phosphorus oolitic iron ore for iron recovery and dephosphorization by direct reduction-magnetic separation. Chin. J. Eng., 44 (2022), pp. 849-856, 10.13374/j.issn2095-9389.2020.11.29.002.
The removal of phosphorus from iron ore by leaching with …
Alkali-leaching and acid-leaching were proposed for the dephosphorization of Changde iron ore, which contains an average of 1.12% for phosphorus content. ... Beneficiation of rejects slime of iron ore by means of sequential leaching ... A process has been proposed for the treatment of apatite concentrate obtained from the dephosphorization of ...