Magnetic properties of chalcopyrite and arsenopyrite for …
2.3. VSM analysis for magnetic susceptibility of samples. The magnetic properties of the pure chalcopyrite and arsenopyrite samples were investigated through …
Coal pyrite microwave magnetic strengthening and electromagnetic
The magnetic desulfurization separation process on fine coal is illustrated in Fig. 1.First, the high sulfur fine coal was graded to 0.5 mm/0.25 mm.The microprocessing system administers microwave energy to the 0.5 mm/0.25 mm high sulfur fine coal with different frequencies.The microwave energy is selectively absorbed by different minerals …
Minerals | Free Full-Text | Removal of Iron from Pyrite-Rich …
Magnetic separation tests were performed on the calcined products of the 2.20 SG sink fraction of the Baker coarse refuse. A slurry of 10% w/v was introduced into an L-4-20 wet high-intensity magnetic separator (WHIMS, L-4-20, Eriez, PA, USA) at various magnetic field strengths. The non-magnetic fraction of the feed slurry was collected …
On Improving the Separation Efficiency of a Wet High …
On Improving the Separation Efficiency of a Wet High Gradient Magnetic Separator for the Removal of Pyrite from Egyptian Coal Suzan S. Ibrahima, Ali Q Selimb, Mohsen M. Farahat a, Ahmed M. El ...
Recovery of iron from pyrite cinder by suspension …
A high-quality iron concentrate with Fe content of 65.58% and copper content of 0.17% was obtained subsequently from the leaching residuals through magnetic separation.
Effect of microwave heating on magnetic separation of pyrite
The microwave irradiation of 2 min at 1900 W on pyrite ore increased the iron recovery to 80% compared to 25% in magnetic concentrate [11]. The microwave heating leads to decomposition of pyrite ...
OneMine | Preparation of High Quality Magnetite Concentrate from Pyrite
Domestic production of pyrite cinder reached 15.95 million tons in 2006. The pyrite cinder used in cement industry accounts for about 30% production. The remaining 70%, 11.17 million tons, was thrown away as waste, which brought serious environmental and resource problems. A new technology of composite pellet reduction-roasting and …
Effect of microwave treatment on the flotation and magnetic separation …
The application of microwave radiation at 500 w power and a frequency of 2.45 GHz for the preferential heating of dielectric inorganic pyrite in high sulphur coals to form a more magnetically ...
Prediction of Separation Performance of Dry High …
Induced Roll Magnetic Separator Dry high intensity magnetic separator is designed to separate weak magnetic and nonmagnetic materials. It uses a specially designed circuit …
Coal pyrite microwave magnetic strengthening and electromagnetic
Section snippets Experimental and analysis methods. The magnetic desulfurization separation process on fine coal is illustrated in Fig. 1. First, the high sulfur fine coal was graded to 0.5 mm/0.25 mm.The microprocessing system administers microwave energy to the 0.5 mm/0.25 mm high sulfur fine coal with different …
Arsenopyrite removal from pyrite concentrate using pulsating high …
DOI: 10.1016/J.RINP.2018.08.008 Corpus ID: 139578435; Arsenopyrite removal from pyrite concentrate using pulsating high gradient magnetic separation @article{Ye2018ArsenopyriteRF, title={Arsenopyrite removal from pyrite concentrate using pulsating high gradient magnetic separation}, author={Fangping Ye and Jintie Liu and …
Results in Physics
300g, the separator achieved an improved pyrite concentrate, with its sulfur grade increased from 22.61% in feed to higher than 25%, while maintaining a sulfur recovery …
Recovery of iron from pyrite cinder by suspension …
Through magnetic separation, magnetite is further enriched, and quartz and mica are separated and collected in the magnetic tailings. ... An innovative approach to separate iron oxide concentrate from high-sulfur and low-grade pyrite cinders. J. Iron Steel Res. Int., 23 (8) (2016), pp. 756-764, 10.1016/S1006-706X(16)30117-0. View PDF View ...
Effect of microwave treatment on the flotation and …
sphalerite (ZnS) and pyrite (FeS2) to be exploited in flotation and/or magnetic separation by using microwave energy because these minerals are the main constituents of the complex ore deposits all over the world. Material and experimental study Sphalerite, galena and pyrite samples used in the experiments
Development of magnetic flotation hybrid separation …
For instance, a wet high-gradient magnetic separator was investigated for the separation of pyritic sulfur from Egyptian coal ... On improving the separation efficiency of a wet high gradient magnetic separator for the removal of pyrite from Egyptian coal. Int. J. Coal Prep. Util., 37 (2016), pp. 59-74, …
Recovery of Iron from Pyrite Cinder with Reduction–Magnetic Separation …
2.1 Raw Materials. The analytical reagent of sodium sulfate, pyrite cinder mixture, and reduction coal have been used in this study. The chemical composition and physical properties of pyrite cinder are shown in Tables 1 and 2, respectively.The contents of Fe, SiO 2, and S are 61.24%, 6.43%, and 0.27%, respectively.The porosity of pyrite …
On Improving the Separation Efficiency of a Wet High …
Results showed that, at the optimum separation conditions, i.e., 10 l/h feeding rate, 5% pulp density, 2200 Gauss, and 0.6% canister loading, a coal concentrate assaying 0.57% …
Magnetic Separation of Pyrite
Magnetic separation of an untreated sample resulted in 27 percent reduction in pyritic sulfur. Treated samples resulted in reductions ranging from 32 to 45 percent with no consistent trend with treatment temperatures or time; thus, treatment was responsible for 5 to 18 percent additional reduction in pyritic sulfur.
On Improving the Separation Efficiency of a Wet High Gradient Magnetic
ABSTRACT Wet high gradient magnetic separation (WHGMS) of an Egyptian coal sample was carried out to minimize its pyritic-sulfur content reaching 1.60% (2.9% total sulfur). Optimization of the process using the Boxmag Rapid separator included feeding rate, pulp density, applied magnetic field, and the canister loading %. This was …
Wet High Intensity Magnetic Separator
The Reading WHIMS set the industry benchmark for magnetic separation of fine minerals. They afford the most efficient separation of minerals in slurry form, when drying of the …
Magnetic separation of iron pyrite from coal (Patent)
@article{osti_5722257, title = {Magnetic separation of iron pyrite from coal}, author = {Mawardi, O K}, abstractNote = {A high gradient magnetic separator particularly for the desulfurization of coal is described. The process and apparatus are continuous and suitable for high volumes of material in a fluid stream. They employ the concept of a high …
Using microwave pretreatment to improve the high-gradient magnetic …
The main sulfur-containing impurity present in coal, pyrite, has a higher permittivity and heats up faster than the bulk coal. Further, the magnetic properties of pyrite in coal are enhanced after heat treatment, which is conducive to the development of magnetic separation technology [24]. Hence, microwave pretreatment of pulverized …
Formation of pyrite in the process of fine coal …
The order of magnetism in these coal products is as follows: Pyrrhotite > Troilite > pyrite. In addition, the specific magnetization of fine coal first increases and then decreases. With decreasing particle size, the specific magnetic susceptibility X 0 of fine coal decreases gradually; however, the desulfurization degree, S rej, increases ...
Technical Performance Comparison of Coal-Pyrite Flotation …
The Coal Reparation Division of the Pittsburgh Mining Technology Center conducted an investigation to assess and compare the pyritic sulfur reduction potential of coal-pyrite …
Development of a high-gradient magnetic separator for …
Currently, the development of highly magnetic induction technology provides strong feasibility for this separation. In this work, we employed pulsating high-gradient magnetic separation (PHGMS) with highly magnetic induction (1.8T) to separate chalcopyrite and talc, and found that the PHGMS achieves a good separation of …
Is Pyrite Magnetic? (+ Answers To Other Common Pyrite Questions
The first step to understanding the answer to this question is to understand what pyrite is and what is made up of. Pyrite (aka "fool's gold" or "iron pyrite") is a metallic looking material with numerous applications. Its chemical formula is FeS 2, meaning that it is a compound made up of iron (Fe) and Sulphur (S).
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: http ...
Using microwave pretreatment to improve the high-gradient magnetic …
The main sulfur-containing impurity present in coal, pyrite, has a higher permittivity and heats up faster than the bulk coal. Further, the magnetic properties of pyrite in coal are enhanced after heat treatment, which is conducive to the development of magnetic separation technology [24]. Hence, microwave pretreatment of pulverized
Effect of microwave heating on magnetic separation of pyrite
The effect of microwave heating on magnetic processing of pyrite was investigated. Different size fractions of pyrite were treated (heated) in a microwave oven at 2.45 GHz frequency and different power levels. The microwave treated pyrite samples of −420 μm fraction were subjected to magnetic separation at magnetic field intensities …
LABORATORY HIGH INTENSITY INDUCED ROLL …
The high intensity magnetic separator is also very useful in the preparation of a flowsheet design, singe it is capable of processing up to 220 lbs./hour, and results obtained are scalable to larger production machines. For mineral separation studies, materials may be removed by experimenting with various magnetic force intensi-
Maceral and pyrite partitioning through high-gradient …
Abstract. The −0.5 inch (−1.27 cm) and −28 mesh (−600 μm) fractions of the run-of-mine coals from seven western Kentucky preparation plants were crushed to 90 …
Magnetic properties of chalcopyrite and arsenopyrite for high …
1. Introduction. Chalcopyrite (CuFeS 2) and arsenopyrite (FeAsS) are two of the most common sulfide minerals with similar floatability (Mahajan et al., 2007, Yan et al., 2020).They were mainly found in their mineral paragenesis form in most high-arsenic copper ores (Silva et al., 2015, Yu et al., 2019), which resulted in their extreme difficulty …
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, …
Recovery of valuable elements from pyrite pyrolysis slag using magnetic …
This inspired us to purify pyrolysis slag by magnetic separation and flotation method. The results show that when the grinding particle size of −0.040 mm accounts for 80.1 %, the content of Pb and Zn in pyrolysis slag decreased to 0.32 % and 0.17 %, respectively, by only using the magnetic separation method.
Superconducting High-Gradient Magnetic Separation
trate by a pulsing high gradient magnetic separation process [12]. The final recoveries obtained are 30%–40% for Cu and 6%–10% for Mo in the magnetic product, whereas the ... and a small amount of the sulfide mineral pyrite (FeS2). Magnetic separation efficiency may be reduced due to the interference from pyrite. In order to …