— 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, …

 — 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 …

Automated optical image analysis of natural and sintered iron ore. E. Donskoi, ... J.R. Manuel, in Iron Ore, 2015 Abstract. To evaluate an iron ore resource, develop processing routines for iron ore beneficiation, and understand the behavior of the ore during such processing, extensive mineralogical characterizations are required.For calculating …

 — 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 ...

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 …

 — 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 …

 — On the contrary, phosphorus can be utilized to greatly enhance the economic value of the high-phosphorus iron ore (Yang et al., 2017, Udochukwu, 2019), instead of treating phosphorus as a harmful element.Phosphorus is an important chemical raw material, a necessary element for the growth of crops, and an important part of living …

 — 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 …

In today's scenario, ultrafine grinding followed by froth flotation seems to be the most feasible solution for the beneficiation of high phosphorous iron ore in which the concentrate obtained can be utilized for pellet making and ultimately used for steel making processes.

In biological beneficiation processes it is always recommendable to employ indigenous species to reduce environmental impacts. In this work, authors report the successful …

DOI: 10.1016/J.POWTEC.2016.07.044 Corpus ID: 99355596; Beneficiation studies of a difficult to treat iron ore using conventional and microwave roasting @article{Rath2016BeneficiationSO, title={Beneficiation studies of a difficult to treat iron ore using conventional and microwave roasting}, author={Swagat S. Rath and Nikhil …

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 ...

 — 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 ...

 — 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 …

 — 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 ...

 — Deep dephosphorization of high‑phosphorus oolitic iron ore (HPOIO) is extremely difficult because of its refractory characteristics. A new approach for …

 — The reserves of brown iron ore are known to rank third in the world and they are common in North America, Australia, China, Kazakhstan, and other countries. Ores of most brown iron deposits are readily and inexpensively mineable and require low power for crushing and beneficiation. However, the mechanical methods of their beneficiation do …

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%.

 — A process is proposed for the dephosphorization of iron ore. The process consists of an integrated treatment for the removal of the phosphorus from the ore by leaching and further processing of ...

 — 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.

 — 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 …

 — [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 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

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 ...

 — 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 …

 — After studying the influence of reducing gas flow rate, reduction time, hydrogen–carbon ratio and temperature on reduction behaviors, the optimum conditions …

 — Oolitic hematite is an iron ore resource with complex refractory characteristics, abundant reserves, and significant recycling value. In this study, a clean and innovative microwave fluidization roasting method was developed. Iron concentrate with an iron grade of 58.72% and iron recovery of 89.32% was obtained via microwave pretreatment at …

 — 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.

 — ABSTRACT 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 additives such as CaCO3, Ca(OH)2, Na2SO4, and Na2CO3 on the reduction roasting of the iron ore in which phosphorus occurs in apatite …

 — 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 ...