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 ...
Recovery of iron from pyrite cinder by suspension …
Pyrite cinder (PyC) is an iron-enriched tailing.Suspension magnetization roasting(SMR) technology can convert hematite into magnetite, the magnetic properties of the product have been improved, and then through the magnetic separation to complete the separation of magnetite and gangue. SMR consumes less energy than the direct …
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 …
Recovery of Iron from Pyrite Cinder Containing Non-ferrous …
This study presents a new technique that uses high-temperature chloridizing -reduction-magnetic separation to recover iron from pyrite cinder containing non-ferrous metals. The effects of the reduction temperature, reduction time, and chlorinating agent dosage were investigated. The optimized process parameters were proposed as the following: …
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 …
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 …
Physical Concentration of Heavy Minerals: A Brief Review on …
Furthermore, dry high-intensity magnetic separators may then be utilized in order to eliminate the residual magnetic mineral particles obtained from the nonmagnetic ... HG-HIMC was mostly applied (at a laboratory scale) in the removal or separation of pyrite minerals from coal fines; it was found inefficient regardless. 38,44,76,77,82,83,84 ...
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 …
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-
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, …
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 ...
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 …
Maceral and pyrite partitioning through high-gradient magnetic …
Maceral and pyrite partitioning through high-gradient magnetic separation of selected western kentucky coals. James C. Hower, Eric J. Trinkle, Garry D. Wild. ... Pyrite remaining in HGMS clean coals was significantly finer than pyrite in the refuse. Most of the pyrite in the clean was less than 5 μm in diameter, and, in all but one case ...
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 …
Magnetic Separation of Pyrite
Present Studies of Magnetic Separation of Pyrite from Coals ... The laboratory model of induced roll magnetic separator produced beneficiated pulverized coal of high magnetic purity when the hopper provided by the manufacturer was replaced by a vibrating track so that coal was fed very evenly to the roll. Table 7 shows the magnetic ...
Effect of microwave treatment on the flotation and magnetic separation …
The effects of microwave treatment on the floatabilities and magnetic susceptibilities of some sulfide minerals, namely, pyrite, chalcopyrite, galena and sphalerite, were studied. Pure mineral samples were prepared in -425+212-μm, -212+106-μm and -106+38-μm size fractions. Microflotation and magnetic separation tests were …
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
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 ...
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 …
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
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 …
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 …
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 ...
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% …
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.
Gold-sulfur and Pyrite Beneficiation
Pyrite Processing Plant. Ore information: The mineral ores contain 35.68% sulfur, 29.24% iron, and 3.65g/t gold, with a high extraction value. According to phase analysis, the gold in the ore mainly exists as gold sulfide, gold oxide, and gold silicate. We must destroy the pyrite crystal structure in the sample to fully expose the gold mineral …
Intensity Magnetic Separator
The Jones wet high-intensity magnetic separator (WHIMS) was developed in 1956.The structure of the Jones separator is shown in Figure 9.6 and consists mainly of an iron-core electromagnet, a vertical shaft with two (or more) separating rings, a driving system, and feeding and product collection devices. Grooved plates made of magnetic conductive …
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 …
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 …