US Patent for Method for separating flavonoid substances ...

The present invention discloses a method for separating flavonoid substances in Camellia nitidissima Chi based on a magnetic nanoparticles-PAMAM nano composites, which comprises the following steps: preparing PAMAM dendrimer, then using the PAMAM dendrimer to prepare the magnetic nanoparticles-PAMAM nano composites, then adding the obtained magnetic nanoparticles-PAMAM nano …

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Microwave heating processes involving carbon materials ...

This heating has the effect of enhancing the magnetic susceptibility of pyrite thereby improving the removal rates by magnetic separation . In addition to these two industrial applications of microwave heating of coals, the possibility of using microwave heating of a high volatile bituminous coal for rapid coke making has been studied at the ...

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Effect of microwave heating on magnetic separation of ...

Atalay et al. (2003) undertook a similar study to investigate the effect of microwave heating on magnetic separation of pyrite at 2.45 GHz. The pyrite sample used was a copper deposit milled to ...

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Magnetic properties of an iron ore sample after microwave ...

Magnetic properties of an iron ore sample after microwave heating Article (PDF Available) in Separation and Purification Technology 76(3):331-336 · January 2011 with …

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US5824133A - Microwave treatment of metal bearing ores and ...

The present invention provides a new and useful method for bringing about a metallurgical effect in a metal-containing ore or concentrate comprising treating said ore in a resonant microwave cavity while maximizing electric field strength in the area of said ore in said cavity.

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Progress of the technique of coal microwave desulfurization

Aug 15, 2014· In 2011, Yaniv and Livneh et al. mentioned in the patent that the heat treatment by microwave can be used to convert the pyrite in coal into pyrrhotite and locally dry lump coal in a short period of time. This treatment contributes to subsequent desulphurization using a low-intensity dry-type magnetic separation process.

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InTech-Microwave_heating_applications_in_mineral ...

It was concluded that the surface characteristics and magnetization of iron ore minerals alter after microwave radiation. 90 The Development and Application of Microwave Heating The effect of microwave radiation upon the mineralogy and magnetic processing of amassive Norwegian ilmenite ore was per- formed by Kingman et al. 199943.

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WO2013038184A1 - Microwave processing of feedstock ...

A method and apparatus (10) for processing feedstock such as vermiculite (34)or oil- contaminated drill cuttings using microwaves is described. The method involves removing ferrous material form the feedstock by magnetic separation (46) before exposing the feedstock to microwaves. This reduces arcing in the microwave cavity.

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Effect of Microwave Radiation on Processing ...

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Electromagnetic wave energy (e.g., microwave, laser, etc ...

The fractured minerals are subjected to microwave heating to induce fractures between and separation of the at least first and second minerals, and also to ultrasound energy causing further size reduction. The fractured and size-reduced minerals are heated with microwave energy.

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US Patent for Application of microwave radiation in a ...

Excellent microwave coupling and power deposition into the flowable material results. ... whether emulsified or not, or it may be used simply to rapidly heat a fluid without separation. Numerous applications exist in the petroleum, chemical, and food-processing industries. ... Justia Patents US Patent for Application of microwave radiation in a ...

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Methods and apparatus for electromagnetic processing of ...

Nov 07, 2017· Methods and apparatus for electromagnetic processing of phyllosilicate minerals ... Operating lignite fired boiler involves raising flow point of ash in boiler by magnetic/ electrostatic separation of siderite, similar ferrous materials, foreign matter during reduction ... "Effect of microwave heating on magnetic separation of pyrite ...

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US Patent for Process of destructive distillation of ...

As illustrated, the drive end of the conveyor 8 is located in a pre-heating zone 9 of the vessel 5. In the pre-heating zone, the chopped material is typically raised to a temperature in the range 300.degree. to 500.degree. C. Downstream of the pre-heating zone 9 is a microwave discharge zone 10 having a plurality of microwave sources 11a, 11b, 11c.

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Magnetic Field Horizontal

A Horizontal Magnetic Field Of 1.0*10^-4 T Is At ... | Chegg.com . A horizontal magnetic field of 1.0*10^-4 T is at an angle of 30 degrees to the direction of the current in …

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Criterion for selective microwave heating of sulphur in ...

Bluhm et at.4, Zavitsanos et al.5 and Kolm et a/.6-7 have discussed selective heating in connection with the magnetic separation of sulphur compounds in coal. The work of Beeson et al.8 has indicated the need for a systematic frequency search to determine the optimum frequency for selective heating.

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Thermal analyses of washed, microwave ... - SpringerLink

Abstract. The effects of beneficiation by washing and selective demineralisation based on the magnetic separation of microwave pre-treated samples, on the spontaneous heating tendency and thermal description of coals of South Eastern Coalfields, India using crossing point temperature and thermal analysis technique are presented.

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Microwave-assisted leaching—a review - ScienceDirect

When applying microwave irradiation to the material, the electric and magnetic components are changing rapidly (∼2.4×10 9 per second at a frequency of 2.45 GHz) and the molecules cannot respond quickly to the change in direction, giving rise to friction and therefore causing them to warm up (Galema, 1997).. Ionic conduction is another important microwave heating mechanism.

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Microwave Heating Applications in Mineral Processing ...

Uslu et al., 200347, investigated the effect of microwave heating on magnetic processing of pyrite. The microwave treated pyrite samples of −0.420mm fraction were subjected to magnetic separation at magnetic field intensities of 0.1, 0.3 and 0.5T.

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Effect of Microwave Radiation on Coal Flotation | Request PDF

Effect of Microwave Radiation on Coal Flotation Article in Energy Sources Part A Recovery Utilization and Environmental Effects 31(6):492-499 · February 2009 with 34 Reads How we measure 'reads'

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Minerals | Free Full-Text | Microwave-Absorbing ...

The microwave absorbing characteristics of magnetic separation products (magnetic and non-magnetic) of reductive products of ilmenite concentrate were measured by the method of microwave cavity perturbation and the magnetic separation products were characterized by X-Ray Diffraction (XRD). It was demonstrated that metallic iron was a strong microwave absorbing material, while TiO2 …

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Electromagnetic Wave Energy (e.g., Microwave, Laser, Etc ...

A microwave heating zone is configured for heating the second material layer with a microwave generator as the conveyer conveys the layers through the microwave heating zone. The second material layer consists of a metal-containing material. ... Date of Patent: February 4, 2014 ... removing ferromagnetic metals by magnetic separation; removing ...

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Magnetic enhancement of pyrite by caustic microwave treatment

A study is reported of the reasons for the magnetic desulphurisation of coal after microwave irradiation in a caustic slurry. X-ray diffraction, EDAX, ESCA and magnetic susceptibility studies were carried out on both mineral pyrite and the magnetic concentrate from coal after irradiation by microwaves of 2.45 GHz at 500 w for up to 40 seconds in the presence of 300 g/litre NaOH.

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Compounds Separation Global

SEPARATION OF PHENOLIC COMPOUNDS FROM COAL LIQUIDS Yoichi Kodera, Koji Ukegawa, and Tetsuo Nakayama National Research Institute for POllUtiOn and Resources . ... CR4 - Thread: Magnetic Separation to Remove Iron Compounds ... Hello Dearhearts, My well water has some kind of iron compound that leaves rust stains on walls and fences. The plants ...

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Gravity Separation Mainly

Gravity separation is often said that the re ... based on magnetic agglomeration work mainly with the process is ... Know More. gravity beneficiation of hematite ore - MTM Crusher . ... Gravity separation is main equipment used in Gravity Beneficiation Plant, and it is Mainly used ...

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US Patent for Method of removing sulfur and other ...

Some extra heating is required to effect magnetic enhancement in accordance with the present invention, but this makes no change in the overall heat balance. The success of magnetic separation is enhanced by the conversion of non-magnetic, or weakly magnetic iron sulfides, to highly magnetic monoclinic pyrrhotite.

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Effect of microwave treatment on the flotation and ...

Aug 01, 2007· The maximum temperature values of the samples were measured during the microwave treatment, and possible alterations on the mineral surfaces were determined by X-ray diffraction (XRD) analysis. The effects of microwave treatment are discussed based on the result of microflotation and magnetic separation tests.

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CN102828021B - Phosphosiderite microwave coupling ...

Between 180-250 mesh, to meet the needs of magnetic separation; Preferably, the above mixed powder obtained by grinding the mineral material of the particles is preferably 200 mesh powder can be more than 80%, in order to obtain better magnetic separation effect.

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US7571814B2 - Method for separating metal values by ...

Methods and apparatuses for separating metal values, such as nickel and nickel compounds, from mineral ores, including lateritic ores are disclosed. The method includes providing a mixture of particles (e.g., crushed and sized ore) that is composed of at least a first group of particles and a second group of particles. Group members have similar chemical composition, while particles belonging ...

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pyrite magnetic separation - castersmilieu.be

Effect of microwave treatment on the flotation and ... The effects of microwave treatment are discussed based on the result of microflotation and magnetic separation tests. The results revealed that pyrite, chalcopyrite and galena were heated very quickly and that their surface temperatures reached -700 to 900°C while the temperature of ...

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The effect of microwave radiation on mineral processing

magnetic separation. It has been shown that microwave pre-treatment is most effective for coarse ... Introduction to Microwave Heating Principles . . page 2-1 ... 6.4.2) Effect of Microwave Radiation on Grindability . . . page 6-10 6.4.3) Effect of Microwave Radiation on Magnetic ...

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