Minerals | Free Full-Text | Removal of Iron from Pyrite-Rich …

Gupta, T.; Nawab, A.; Honaker, R. Removal of Iron from Pyrite-Rich Coal Refuse by Calcination and Magnetic Separation for Hydrometallurgical Extraction of Rare Earth Elements. Minerals 2023, 13, 327. https://doi/10.3390/min13030327

Processing a rare earth mineral deposit using gravity and magnetic

Falcon concentrator and WHIMS used to concentrate RE ore. Rare earth (RE) mineral deposits are typically processed using several different unit operations including flotation, gravity, magnetic and electrostatic separation techniques. Two of the most important beneficiation techniques for RE minerals are gravity and magnetic separation.

Removal of Iron from Pyrite-Rich Coal Refuse by Calcination …

Removal of Iron from Pyrite-Rich Coal Refuse by Calcination and Magnetic Separation for Hydrometallurgical Extraction of Rare Earth Elements. / Gupta, Tushar; Nawab, …

Eriez

High-intensity magnetic roll assembled from rare earth permanent magnets. Magnetic roll diameters of 4, 6, and 12 inches. Magnetic roll widths up to 60 inches. Continuous duty applications treating up to 12 TPH feed/separator. All stainless steel construction. Variable speed drive on each magnetic roll. Mounted spread box/hopper and vibratory ...

Removal of Iron from Pyrite-Rich Coal Refuse by Calcination …

Dive into the research topics of 'Removal of Iron from Pyrite-Rich Coal Refuse by Calcination and Magnetic Separation for Hydrometallurgical Extraction of Rare Earth Elements'. Together they form a unique fingerprint.

Magnetic Separation of Rare-Earth Ions: Property Database …

Abstract. This work bridges two gaps in the magnetic separation of rare-earth ions. (1) A material property database is provided for the solutal expansion …

Review of Coal-Fired Electrification and Magnetic Separation

new type of high gradient, a strong magnetic rare earth permanent magnetic separator. The magnetic ... G. Process for Electrostatic Separation of Pyrite from Crude Coal. U.S. Patent 3,941,685, 2 ...

Magnetite recovery in coal washing by high gradient magnetic separation …

In 1990 and 1991, a series of 97 laboratory-scale conventional wet-drum magnetic separation tests and 52 high-gradient magnetic separation tests were carried out at the Pittsburgh Energy Technology Center (PETC) of the US Department of Energy to investigate the performance of these processes in separating micronized magnetite …

Magnetic Separation

However, it is replaced by rare earth role magnetic and rare earth drum magnetic separators. FIGURE 12.35. Schematic diagram showing cross-belt magnetic separator. (Source: modified ... With the primary purpose of HGMS being the removal of pyrite from fine coal, experiments on high-S Illinois Basin coals by Murray (1977), Hise et al. (1979 ...

(PDF) Iron bearing oxide minerals separation from rare earth …

Iron bearing oxide minerals separation from rare earth elements (REE) rich coal fly ash ... compounds as well a slow pyrite and clay mineral ... enrichment in the smaller non-magnetic inorganic ...

(PDF) Enhanced magnetic separation of pyrite …

Efforts have been taken to improve the magnetic susceptibility of pyrite in coal by microwave treatment and pyrolysis (Bluhm et al. 1986;Butcher and Rowson 1995;Cicek et al. 1996).

Enrichment of rare earth elements from coal and coal by …

The Pennsylvania State University team [21] evaluated float-sink, magnetic and electrostatic separation methods for the enrichment of REE from coal and coal by-products including roof rock, pit cleanings and coal refuse samples. They found that the roof rock samples showed a best response to gravity separation, while the pit cleaning …

Minerals | Free Full-Text | Removal of Iron from Pyrite-Rich Coal …

AMA Style. Gupta T, Nawab A, Honaker R. Removal of Iron from Pyrite-Rich Coal Refuse by Calcination and Magnetic Separation for Hydrometallurgical Extraction of Rare Earth Elements.

Process evaluation and flowsheet development for the recovery of rare

The beneficiation of rare earths from coal fly ash attracts growing attention in the United States (Honaker et al. 2017; Gupta et al. 2019), but Mountain Pass bastnaesite will still be the main ...

On Improving the Separation Efficiency of a Wet High …

Separator for the Removal of Pyrite from Egyptian Coal, International Journal of Coal Preparation and Utilization, 37:2, 59-74, DOI: 10.1080/19392699.2015.1125894 To link to this article: https ...

Sequential particle-size and magnetic separation for enrichment of rare

Jo Keywords: Rare-earth Element, Coal fly ash, Particle size, Magnetic separation 1. Introduction Rare-earth elements and yttrium (REY) are widely used and have become important components in modern industries; however, although demand is high, availability of REY is very limited [1–5].

Optimizing the Performance of the Wet High …

Greater than 50% total sulfur (65% pyrite sulfur) rejection at 85% clean coal yield was achieved using a high-gradient magnetic separator (HGMS) at 1. 3 T and 53 mm/s (2 in. per sec) flow rate ...

Separation of Iron and Rare Earths from Low‐Intensity …

separation is employed to separate iron and rare earth from low-intensity magnetic separation tailings (LIMS tailing). The research focuses on investigating the impact of …

Fine coal desulfurization and modeling based on high-gradient magnetic

The magnetic properties of pyrite in coal are ... used in the experiment. The microwave power was 1000 W, and the particle size of the sample was −0.5 mm. A strong rare-earth magnetic roller type magnetic separator was used. ... The variance analysis of the Box–Behnken response surface method for microwave-enhanced fine coal magnetic ...

Separation of Iron and Rare Earths from Low‐Intensity Magnetic …

Due to the weak magnetism of hematite and rare earth minerals, magnetic separation has low efficiency. The present study focuses on the separation of iron and rare earth from LIMS tailings through magnetization roasting-magnetic separation. ... Pyrite (FeS 2) 0.76. Apatite (Ca 5 (PO4) 3) 6.47. Pyrrhotite (Fe 1-x S) 0.31. Fluorite …

‪Ahmad Nawab‬

2022. Removal of iron from pyrite-rich coal refuse by calcination and magnetic separation for hydrometallurgical extraction of rare earth elements. T Gupta, A Nawab, R Honaker. Minerals 13 (3), 327., 2023. 6. 2023. Pretreatment of bituminous coal by-products for the hydrometallurgical extraction of rare earth elements.

Removal of Iron from Pyrite-Rich Coal Refuse by …

fraction of Baker coal seam coarse refuse was pulverized to finer than 180 µm, calcined at various temperatures, and separated into magnetic and non-magnetic fractions using a wet high-intensity magnetic separator at different field strengths. The untreated feed, calcined products, and their subsequent magnetic and non-magnetic fractions ...

Removal of Iron from Pyrite-Rich Coal Refuse by Calcination …

Minerals (Feb 2023) . Removal of Iron from Pyrite-Rich Coal Refuse by Calcination and Magnetic Separation for Hydrometallurgical Extraction of Rare Earth Elements

A new magnetic way to separate rare earths

A new magnetic way to separate rare earths. One of the experiments allowed the researchers to obtain 99.7% dysprosium in one step from a 50/50 mixture of lanthanum and dysprosium. (Image by ...

Recent advances in selective separation technologies of rare earth

Rare earths usually exist in single or binary mixed forms [16].In order to obtain a single rare earth element, researchers have conducted a lot of research [17].Pyrometallurgical and hydrometallurgical processes are commonly used in the reports [11].Although pyrometallurgy reduces the use of organic solvents, the melting of metals …

Magnetic Separation of Rare-Earth Ions: Property Database …

This work bridges two gaps in the magnetic separation of rare-earth ions. (1) A material property database is provided for the solutal expansion coefficient and the magnetic susceptibility of 11 out of 17 trivalent rare-earths. (2) A novel protocol is developed to enhance and resolve the magnetic term of the Kelvin force. For that …

Recycling of iron from red mud by magnetic separation after co-roasting

A recycling process of iron from red mud by magnetic separation is proposed, in which iron oxide (Fe 2 O 3) in red mud transforms to magnetite (Fe 3 O 4) by anaerobic co-roasting with pyrite (FeS 2).TG-DTA and XRD results showed that hematite was reduced to magnetite by the thermo-decomposed compounds (iron monosulfide, …