No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
The above beneficiation strategies have not achieved efficient and economically feasible utilization of oolitic hematite [20], [21], [22]. Recently, the process of reduction roasting followed by magnetic separation has attracted remarkable attention, which can obtain high-grade concentrate and high iron recovery efficiency [23], [24] .
the beneficiation of oolitic hematite ore, leading to various separation indexes [2, 6−11], which is mainly attributed to several facts: several gangue minerals contained in the ore, complicated associations and structures among minerals, high cost brought by limited processing technique and equipment. Furthermore, the
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 1050 °C for …
Depending on their petrology, oolitic iron ores may require very simple or extremely complex flowsheets for their processing. This review focussed on beneficiation by conventional mineral processing techniques and also more energy intensive processes involving heating (roasting) or leaching.
DOI: 10.1016/J.HYDROMET.2017.04.015 Corpus ID: 100431777; Dephosphorization of high phosphorus oolitic hematite by acid leaching and the leaching kinetics @article{Wang2017DephosphorizationOH, title={Dephosphorization of high phosphorus oolitic hematite by acid leaching and the leaching kinetics}, author={Heng Hui Wang and …
Zhang et al. (2008) used microwave heating prior to beneficiation of an oolitic iron ore from Yichang, China. The ore was ground to <74 µm to achieve liberation of the hematite from the gangue. Reductants used included waste iron powder, coke and charcoal and the reduced product was tested using either magnetic separation or reverse flotation.
is the key to developing the efficient beneficiation of oolitic iron ores. Various analytical techniques can . be used to characterize iron ores, among which X-ray Diffraction ...
The distinctive oolitic structure within the ore is regarded as the primary factor causing the difficulty in the beneficiation of oolitic hematite ore. The objective of this study is to devise an effective approach to tackle the issue of beneficiation of oolitic hematite ore, thereby facilitating the utilization of oolitic hematite ore, which ...
Reductive roasting and magnetic beneficiation of oolitic iron ores from west Hubei province were performed in this research. The properties during the roasting process under various conditions were examined. The important contribution of this study is the quantitative investigation of the reduction roasting process versus roasting time, and the ...
Oolitic Hematite mines, iron ore with poor beneficiation efficiency are widely distributed in China with the most abundant deposits. In this paper, comprehensive technology integrating ...
The beneficiation of low-grade iron ores is a key research and development topic in the mineral processing industry. The gradual exhaustion of high-grade iron ore reserves, and rising consumer iron and steel demand globally necessitate efficient low-quality iron ore beneficiation to meet steelmaking quality requirements. This comprehensive review explores …
Low-grade iron ores contain many impurities and are difficult to upgrade to make appropriate concentrates for the blast furnace (BF) or direct reduction (DR) technologies. In this study, the beneficiation of an Oolitic-iron ore (containing 45.46wt% Fe2O3) with magnetization roasting by non-coking coal (containing 62.1wt% fixed carbon) under a stream of argon gas …
Oolitic Hematite mines, iron ore with poor beneficiation efficiency are widely distributed in China with the most abundant deposits. In this paper, comprehensive technology integrating …
Mechanisms of phosphorus removal in the beneficiation of high phosphorous oolitic hematite ore by direct reduction roasting with dephosphorization agent were studied using XRD, SEM and EPMA. The results showed that about 20% of the apatite in the raw ore transferred into phosphorus and volatilized with the gas in the process of reduction ...
The objective of this study is to devise an effective approach to tackle the issue of beneficiation of oolitic hematite ore, thereby facilitating the utilization of oolitic hematite ore, …
High-P oolitic hematite is recognised as one of the most refractory mineral resources because of the special oolitic structure. Conventional selective reduction roasting is characterised by high energy consumption and large greenhouse gas emissions.In this study, a clean utilisation of refractory high-P oolitic hematite via phase reconstruction was proposed to …
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-temperature pretreatment for enhancing the effect of iron enrichment and dephosphorization in the magnetization roasting-leaching process was studied by X-ray …
Oolitic hematite ores are mainly found in the US, Canada, France, Pakistan and China [1−5]. The total proven reserves of such resources in China are over 4.0 ... beneficiation of refractory iron ores [9−12]. The process involves the conversion of weak magnetic iron minerals
Accordingly, Hatch and Ironstone are developing a new pyrometallurgical process (Hatch Ironstone Chloride Segregation) to produce metallic iron from high silica and high phosphorus …
Depending on their petrology, oolitic iron ores may require very simple or extremely complex flowsheets for their processing. This review focussed on beneficiation by …
In view of the close association and dissemination of iron- and phosphorus-based minerals in the ooids, it is found that the process of stage-grindings and stage-separations can be adopted to …
To explore the microstructure evolution of oolitic hematite during microwave fluidization roasting, COMSOL multiphysics and scanning electron microscopy (SEM)–energy-dispersive spectrometry (EDS) were used to simulate and explore the microstructure evolution. The simulation results indicated that with the extension of microwave heating time and the …
With the depletion of high-quality iron ore resources, high-phosphorus oolitic hematite (HPOH) has attracted great attention due to its large reserve and relatively high iron content. However, HPOH is very difficult to be used in ironmaking process due to its special structure. A two-step method of gas-based direct reduction and magnetic separation was thus …
Bio-beneficiation techniques have emerged as a sustainable alternative for mineral recovery. This review delves into recent bio-beneficiation advancements for enhanced low-grade iron ore recovery using microbes. ... Mineralogy, geochemistry and the origin of high-phosphorus oolitic iron ores of Aswan, Egypt. Ore Geol Rev 80:185–199. https ...
However, for the beneficiation of typical oolitic iron ore, the concentrating process is challenging, because of its low grade Fe, poor liberation of iron minerals and complex mineralogical composition [8, 9, 10]. Commercially, satisfactory …
The phosphorus occurrence states of high phosphorous oolitic hematite in Nigeria were studied by soak leaching and electrodialysis test. The characteristics of roasted products in the beneficiation by direct reduction roasting with dephosphorization agent Na2CO3 was also analyzed using the XRD and SEM. It showed that phosphorus-bearing minerals mainly existed …
Beneficiation of Oolitic Iron Ores. Author(s) V. Hernandez, R. Brown, S. Chang, A. Dalvi, M. Oliazadeh, and K. Peake. CMP 2014, 46th Canadian Mineral Processors Conference. Abstract. Ironstone Resources Ltd. is developing the Clear Hills oolitic iron ore deposit in northwest Alberta, Canada. Sources of oolitic iron ore worldwide are abundant ...
The beneficiation of low-grade iron ores to meet the growing demand for iron and steel is an important research topic. However, certain ores do not qualify to be treated in physical separation ...
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 …
The mechanisms of reduction roasting and beneficiation of high-phosphorus oolitic hematite were studied employing X-ray diffraction (XRD) and scanning electron microscope-energy dispersive spectroscopy (SEM-EDS) and thermogrvimetric-differential scanning calorimetry analysis (TG-DSC). Results showed that the reduction results using these two ...
