The differences in magnetic susceptibility can be utilized to separate a valuable mineral from its gangue through the magnetic separation method. Similar to other materials, minerals are generally classified into three …
The elemental analysis of the RYF samples from the second magnetic separation showed that the non-magnetic fraction contains predominantly species related to zirconite and monazite, containing higher concentrations of Zr and Si, and enrichment of the concentrations of P, Ce, Nd, Th, and Y (Table 2), probably associated with the …
Magnetic separation of monazite from mixed minerals George B. Abaka-Wood 1 *, Jonas Addai-Mensah 1,2 and William Skinner 1 1 Future Industries Institute, University of South Australia, Mawson ...
Magnetic Separation 2.1 Introduction The differences in magnetic susceptibility can be utilized to separate a valuable mineral from its gangue through the magnetic separation method. Similar to other materials, minerals are generally classified into three main categories, namely diamagnetic, paramagnetic, and ferromagnetic.
Experiments were carried out using a series of spiral concentrators, magnetic separators, electrostatic separators, and flotation to recover the monazite mineral as a by-product of ilmenite, sillimanite, and garnet.
It was found that the recoveries of monazite were 94.8% and 76.6%, respectively, when magnetic separation and gravity separation were separately carried out. ...
Moumar Dieye et al. [21] separately used magnetic separation and gravity separation, to separate monazite from the rough zircon concentrate in Senegal. It was found that the recoveries of …
The decomposition of monazite at temperatures ranging from 140 to 200 °C as processed in Brazil includes the following sequence of operations: magnetic field separation, milling, alkaline treatment, trisodium phosphate filtration, and Th-U cake filtration (Ney et al., 1992).
A wet high intensity magnetic separator (WHIMS) was used in stage-wise concentrate-tails separation tests at selected magnetic field intensities (0.11-1.08 T) for model …
Flotation-magnetic (FM) separation is a newly-developed technology for the economic recovery of rare earth elements from the Dalucao ore. The FM process selectively agglomerates the rare earth particles while separating them from gangue minerals by bubble flotation. ... Before the 1960s, most rare earth resources were extracted from …
The results of the pre-concentration studies reveal that by using multi-stage spiral concentrators, the Total Heavy Minerals [THM] have been upgraded to 97.8% with …
The high grade monazite concentrate obtained from the tabled top-strip fraction is processed as follows. Using the high-intensity magnetic separation, most of the monazite and associated opaque minerals, in addition to minor of magnetic zircon, is obtained in the magnetic fraction.
Further, non-magnetic zircon is separated from the magnetic monazite. If monazite is chemically processed, the purity of monazite concentrate is upgraded to ∼98% using magnetic separation, otherwise the purity stream may be as low as 30%.
Monazite is a rare earth phosphate mineral that contains various amounts of thorium. Originally, monazite was the primary source of rare earth elements as …
In the context of RE mineral beneficiation, magnetic separation is typically used for two purposes: low intensity magnetic separation is used to remove ferromagnetic gangue minerals such as iron oxides and high intensity magnetic separation is used to separate monazite and xenotime from other heavy minerals (Gupta and Krishnamurthy, …
Download scientific diagram | Monazite recovery against hematite recovery for differing model mixtures. from publication: Magnetic separation of monazite from mixed minerals | Magnetic separation ...
The concentrate assays 97% monazite, which has been produced using a combination of gravity, electrostatic, and magnetic separation units. The feed material also contains ilmenite, zircon, rutile, and some silicate-bearing minerals.
This paper reviews rare earth minerals (monazite and xenotime) separation by flotation. A wide range of monazite and xenotime flotation test results are summarized including: reasons of variation ...
Bastnaesite, monazite, and mixed RE ores are generally beneficiated by flotation, gravity and magnetic separation. Subsequently, metallurgical processes of oxidation roasting–HCl leaching, caustic soda decomposition and high-temperature concentrated sulfuric acid roasting are adopted.
In the context of RE mineral beneficiation, magnetic separation is typically used for two purposes: low intensity magnetic separation is used to remove ferromagnetic gangue minerals such as iron oxides and high intensity magnetic separation is used to separate monazite and xenotime from other heavy minerals (Gupta and Krishnamurthy, …
Besides these minerals, ilmenite and zircon were the target minerals to be concentrated. Using a magnetic separation method at various magnetic intensities, paramagnetic minerals, ilmenite (0.8 T magnetic product), and monazite/xenotime (1.0–1.4 T magnetic product) were recovered selectively.
A wet high intensity magnetic separator (WHIMS) was used in stage-wise concentrate-tails separation tests at selected magnetic field intensities (0.11–1.08 T) for model mineral mixtures of...
This paper reviews rare earth minerals (monazite and xenotime) separation by flotation. A wide range of monazite and xenotime flotation test results are summarized including: reasons of variation in the point of zero charges on these minerals, the effects of various flotation conditions on zeta potential of monazite and xenotime, …
Most of the monazite grains are reversible negative and are attracted towards the positively charged static electrode. Using wet gravity concentration, both low and high intensity magnetic separation, and electrostatic separation techniques, a high grade concentrate assaying 97 wt. % monazite with a recovery of 76.8% can be obtained.
Monazite concentrate obtained are processed under different condition of time, temperature and concentration using acidic or alkaline solution. ... electrostatic or magnetic separation processes have been used for the recuperation of monazite concentrate from fine heavy mineral beach sand deposits where standard gravity …
Low-intensity magnetic separation (LIMS) tailings are a common by-product obtained after magnetite magnetic separation, containing hematite and the rare earth minerals monazite and bastnaesite. Due to the weak magnetism of hematite and rare earth minerals, magnetic separation has low efficiency.
The current beneficiation results using the WGS demonstrates higher quality outcomes when compared with the Moustafa et al. [14] study to obtained Monazite concentrate from the low grade raw beach black sands, using a combination of gravity, magnetic and electrostatic separation techniques. The raw sands contained 0.25 wt% …
Wet gravity separation was used initially to discard low specific gravity gangue and then low intensity magnetic separation to discard any ferromagnetic minerals without removing paramagnetic monazite. A chain of gravity, magnetic and electrostatic separations were further applied where rutile was removed after electrostatic separation followed ...
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