Separating Pyrite & Blende Magnetism

2018-2-9  Pyrite and marcasite begin to loose their sulphur and change over into the magnetic sulphide, and finally into the oxides, at a temperature of 370° C, and the roast must be conducted between this point and the ignition point of blende, which is about 600° C. Below 400 to 460 degrees the pyrite does not become thoroughly magnetic

Magnetic Separation of Fine Mineral Sulphides

2018-7-7  Those which are paramagnetic can only be separated using high-gradient magnetic separation (hgms) at high fields (up to 2 Tesla) and low flow rates (e.g. 1 cms-¹). Arsenopyrite (FeAsS), chalcopyrite (CuFeS2) and marcasite

The electronic, magnetic and optical properties of Co

The electronic, magnetic and optical properties of Co doped marcasite FeS 2 compounds have been investigated through the first-principles calculations. No imaginary frequency emerges in the phonon dispersion curves confirms the Fe 7 CoS 16 and Fe 6 Co 2 S 16 compounds are dynamical stable.

Thermomagnetic studies of conversion of pyrite and

2019-12-7  The magnetic susceptibility of the pyrites is quite small k"0.2 x 10-6 cm3 g-1 and 0.6 x 10-6 cm3 g-1 for pyrite and marcasite respectively) because Fe2+ in these compounds is in the low-spin configuration (Burgardt and Seehra 1977, Seehra and Jagadeesh 1979).

Dearsenization of copper ore by high gradient magnetic

2021-3-29  Pyrite・Marcasite Characterization of copper ores Magnetic susceptibility( ) As free copper ore Since the separation point is smaller by one digit than the phosphor, it is difficult to recover 5 μmparticles, but the relationship is similar. ≒ 6 7 Separation tests

PITEL, downloads.hindawi

2019-8-1  Magneticseparation is oneofthesephysical methods. Steam coal contains, in general, 1 to 5 per cent ofsulphur, ofwhich twothirds are bonded mostly in pyrite and marcasite. Magnetic properties of these minerals differ from those of pure coal matter which indicates a possibility of applying magnetic separation techniques. Taking into account the processing ofbrown coal

Modification of magnetic properties of siderite ore by

2005-5-1  Magnetic separation processes utilize the differences in magnetic properties of the components of treated ores. The separation of weakly magnetic iron ores is limited by the magnitude of magnetic force that can be developed in high-intensity magnetic separators.

Mineralogical Characterization and Optimization of Fe

2021-3-26  In addition, the roasted samples were milled for 10 min under a ratio of 1:1 (liquids/solids), and each slurry sample was directly subjected to magnetic separation. In fact, the magnetic

Roasting pyrite for magnetism with minimum sulphur

2020-10-28  the roaster the iron mineral is made magnetic. The roast, as practiced, requires very little fuel as the maroaaite, on burning to magnetite, produoes oonsider­ able heat· The roasted produot is then sent to a mAg­ netio separator usually of either the . Cleveland.Knowles . or Ding types and the magnetic material i8 taken out

Separating Minerals by Electromagnetic 911

2018-2-5  Zinc blende frequently occurs with pyrite, marcasite or siderite, all minerals of specific gravities too similar to permit a separation by specific-gravity methods. Pyrite and marcasite are not capable of separation in their raw state, but become magnetic on roasting; siderite is separable by magnetic fields of high intensity, and may also be

Roasting pyrite for magnetism with minimum sulphur

2020-10-28  and marcasite- In the Wisconsin district. especially, the maransi te content . of the . mine-run ore . is . and magnetic or eleo­ tro-static . schemes . of separation must be resorted to. The magnetic . separation as . practiced . in the district consists of . two steps; first, the . roast; and second, the . subsequent separation. The

Evolved gas analysis of coal-derived pyrite/marcasite

2014-1-7  The initial sample of the coal-derived pyrite/marcasite with particle size 0.1–0.2 mm was first subjected to gravity separation to remove the inclusions of coal using a laboratory mechanical pan (Micropaner). Then, the obtained concentrate was cleaned by means of magnetic separation.

PITEL, ResearchGate

magnetic induction of up to 5 T can be generated, a brass chamber with SUPERCONDUCTING MAGNETSFOR COAL SEPARATION 21 rectangular cross section (50 x

Research on the Reduction of Arsenic in Copper Ore

Precise magnetic separation of arsenic from copper concentrate with high content of arsenic antiferromagnetic paramagnetic 10-5 10-610-6 10-5 10-4 10-3 Chalcopyrite 4.7×10-5 Chalcopyrite(400℃) 8.0×10-5 Enargite-1.6×10-6 Arsenopyrite 2.2×10-6 Tenanntite 7.0×10-6 Pyrite・marcasite(reference

The electronic, magnetic and optical properties of Co

Abstract. The electronic, magnetic and optical properties of Co doped marcasite FeS 2 compounds have been investigated through the first-principles calculations. No imaginary frequency emerges in the phonon dispersion curves confirms the Fe 7 CoS 16 and Fe 6 Co 2 S 16 compounds are dynamical stable. Although the pure Fe 8 S 16 compound is a nonmagnetic semiconductor with band gap of 1.17 eV

Spinel MnFe2O4 nanoparticles (MFO-NPs) for CO2

2020-6-15  The magnetic separation of the samples was conducted in a magnetic separator (Model: XCGS-73, Davis magnetic tube) under a magnetic field intensity of 600 Gs. The resulting magnetic concentrated material was spinel MnFe 2 O 4 (MFO). The MFO was wet-milled by nano-grinding it with a Fritsch Planetary Micro Mill (PULVERISETTE 7) at 1100 rpm for

采矿专业英语 Douban

2012-5-30  magnetic separation 磁选 magnetic separator 磁选机 magnetic survey 磁力测量 magnetic susceptibility 磁化率 marcasite 白铁矿 margarite 珍珠云母 margin 边缘;储备 marine deposit 海详沉积

NICKEL AND COBALT ORES: FLOTATION

2016-6-7  The monoclinic pyrrhotite, being magnetic, can be partly rejected by magnetic separation, while the hexagonal pyrrhotite is separated by Sotation. Pyrrhotite is known to Soat poorly in alkaline media; therefore the general practice is to selectively Soat pentlandite from pyrrhotite, by maintaining a highly alkaline pH with cyanide as depressant and

Electrostatic Concentration Ores & Minerals

2017-3-6  Electrostatic separation of ores in its present form is generally known as the Huff process, from the name of Charles H. Huff, of Boston, Mass., through whose constant and persistent labors (with the invention of Clinton E. Dolbear as a basis) the

Separating Minerals by Electromagnetic 911

2018-2-5  Zinc blende frequently occurs with pyrite, marcasite or siderite, all minerals of specific gravities too similar to permit a separation by specific-gravity methods. Pyrite and marcasite are not capable of separation in their raw state, but become magnetic on roasting; siderite is separable by magnetic fields of high intensity, and may also be

Dearsenization of copper ore by high gradient magnetic

2021-3-29  Pyrite・Marcasite Characterization of copper ores Magnetic susceptibility( ) As free copper ore Since the separation point is smaller by one digit than the phosphor, it is difficult to recover 5 μmparticles, but the relationship is similar. ≒ 6 7 Separation tests

Roasting pyrite for magnetism with minimum sulphur

2020-10-28  and marcasite- In the Wisconsin district. especially, the maransi te content . of the . mine-run ore . is . and magnetic or eleo­ tro-static . schemes . of separation must be resorted to. The magnetic . separation as . practiced . in the district consists of . two steps; first, the . roast; and second, the . subsequent separation. The

Evolved gas analysis of coal-derived pyrite/marcasite

2014-1-7  The initial sample of the coal-derived pyrite/marcasite with particle size 0.1–0.2 mm was first subjected to gravity separation to remove the inclusions of coal using a laboratory mechanical pan (Micropaner). Then, the obtained concentrate was cleaned by means of magnetic separation.

Research on the Reduction of Arsenic in Copper Ore

Precise magnetic separation of arsenic from copper concentrate with high content of arsenic antiferromagnetic paramagnetic 10-5 10-610-6 10-5 10-4 10-3 Chalcopyrite 4.7×10-5 Chalcopyrite(400℃) 8.0×10-5 Enargite-1.6×10-6 Arsenopyrite 2.2×10-6 Tenanntite 7.0×10-6 Pyrite・marcasite(reference

Spinel MnFe2O4 nanoparticles (MFO-NPs) for CO2

2020-6-15  The magnetic separation of the samples was conducted in a magnetic separator (Model: XCGS-73, Davis magnetic tube) under a magnetic field intensity of 600 Gs. The resulting magnetic concentrated material was spinel MnFe 2 O 4 (MFO). The MFO was wet-milled by nano-grinding it with a Fritsch Planetary Micro Mill (PULVERISETTE 7) at 1100 rpm for

采矿专业英语 Douban

2012-5-30  magnetic separation 磁选 magnetic separator 磁选机 magnetic survey 磁力测量 magnetic susceptibility 磁化率 marcasite 白铁矿 margarite 珍珠云母 margin 边缘;储备 marine deposit 海详沉积

NICKEL AND COBALT ORES: FLOTATION

2016-6-7  The monoclinic pyrrhotite, being magnetic, can be partly rejected by magnetic separation, while the hexagonal pyrrhotite is separated by Sotation. Pyrrhotite is known to Soat poorly in alkaline media; therefore the general practice is to selectively Soat pentlandite from pyrrhotite, by maintaining a highly alkaline pH with cyanide as depressant and

Magnetic separation of particular mixtures

Magnetic separation of particulate mixtures is highly developed and long-practiced. The technique may be practiced as a wet process, such as in a water slurry, or may be used to separate a dry particulate mixture. Magnetic separation is cheap, highly selective, efficient and lends itself to both small scale and large volume uses.

Electrical separation CONCENTRATION OF MINERALS

2021-5-20  The electrical separation is used for: Separation of placer deposits of rare earth minerals. Separation of tin and tungsten ores. Separation of ferrous metals ores. Separation of non-metallic minerals: quartz, feldspar, coal, mica. S econdary metals: non-ferrous and ferrous metals, solid waste. Dedusting and dust collection.