could platinum be separatwd by electrostatic mwthod

Platinum - Element information, properties and uses ...

Platinum is a very different substance to a chemist. Platinum metal is silvery white and does not oxidise, properties that make it highly appealing for jewellery. It is more precious than silver but with prices more volatile than gold.

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Froth flotation - Wikipedia

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic.This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.

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Electrostatic precipitator | pollution-control device ...

Electrostatic precipitator, also called electrostatic air cleaner, a device that uses an electric charge to remove certain impurities—either solid particles or liquid droplets—from air or other gases in smokestacks and other flues. The precipitator functions by applying energy only to the particulate matter being collected, without significantly impeding the flow of gases.

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Electrostatic induction - Wikipedia

Electrostatic induction, also known as "electrostatic influence" or simply "influence" in Europe and Latin America, is a redistribution of electric charge in an object, caused by the influence of nearby charges. In the presence of a charged body, an insulated conductor develops a positive charge on one end and a negative charge on the other end. ...

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How Is Platinum Extracted? - Reference.com

Aug 04, 2015· Because platinum is so rare, it must be extracted after being mined through a process that involves crushing it into incredibly small particles and separating these particles from one another. This is known as the flotation separation method, and produces a frothy layer of particles that can be skimmed to provide the extracted platinum.

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US6462928B1 - Electrostatic chuck having improved ...

An electrostatic chuck 55 comprises an electrical connector 140 which is connected to the electrode 105 to conduct an electrical charge to the electrode 105. The electrical connector 140 comprises a refractory metal having a melting temperature of at least about 1500° C., such as for example, tungsten, titanium, nickel, tantalum, molybdenum, or alloys thereof.

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Method for the interseparation of platinum group metals ...

What is claimed is: 1. A method for the interseparation of platinum-group metals from a gold-free halide solution containing at least two noble metals (PGMs), comprising passing said solution through at least one chromatographic column containing a solid adsorbent with a Kd above 1, which adsorbs the PGMs, and subsequently eluting the loaded adsorbent by a halide salt solution, to obtain ...

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How can I test if a metal is platinum? | Johnson Matthey ...

This value can then be compared with known densities of the platinum, generally accepted as 21.45 g cm –3. Other physical and chemical properties can be found by searching one of the online databases. Lastly, a piece of platinum jewellery will always bear a legal hallmark. Answer posted November 2004. Submitted by: Ms Susan Ashton

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Measurement of spectral emissivity and constant pressure ...

Sep 01, 2017· A detailed description of the electrostatic levitation facility and emissivity measurement system is given in our earlier publications,, but it is briefly repeated here for completeness.The schematic drawing of the experimental setup is shown in Fig. 1.. Download : Download high-res image (144KB) Download : Download full-size image Fig. 1.

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US3031079A - Electrostatic separation - Google Patents

US3031079A US822655A US82265559A US3031079A US 3031079 A US3031079 A US 3031079A US 822655 A US822655 A US 822655A US 82265559 A US82265559 A US 82265559A US 3031079 A US3031079 A US 3031079A Authority US United States Prior art keywords electrode rotor weight mesh electrostatic Prior art date 1959-06-24 Legal status (The legal status is an assumption and is not a …

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US5965968A - Electrostatic motor - Google Patents

An electrostatic motor and its method of production. This electric motor, comprising a fixed part (200, 204, 206, 208) called a stator with a deformable resilient membrane (208) and a moving part (230) called a rotor arranged on the membrane (208) and driven by deformation waves from the resilient membrane, is characterised in that it includes electrostatic means (204, 205) for deforming the ...

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Metals recovery from e-scrap using gravity, electrostatic ...

That is why, a well-known and easily applicable electrostatic separation (ES) method was used to recover metals from printed circuit boards. The grain class of 0.32 - 0.10 mm, obtained after ...

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Mineral processing | metallurgy | Britannica

Mineral processing, art of treating crude ores and mineral products in order to separate the valuable minerals from the waste rock, or gangue. It is the first process that most ores undergo after mining in order to provide a more concentrated material for the procedures of extractive metallurgy.The primary operations are comminution and concentration, but there are other important operations ...

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Electrostatic Force and Electric Charge

Electrostatic Force and Electric Charge Electrostatic Force (charges at rest ): • Electrostatic force can be attractive ... separated by a distance d. It is an electrically neutral system . The "dipole moment" is defined to be the charge times the separation ( dipole moment = Qd ).

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Liquid–liquid extraction - Wikipedia

Liquid–liquid extraction (LLE), also known as solvent extraction and partitioning, is a method to separate compounds or metal complexes, based on their relative solubilities in two different immiscible liquids, usually water (polar) and an organic solvent (non-polar). There is a net transfer of one or more species from one liquid into another liquid phase, generally from aqueous to organic.

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Physical Adsorption - an overview | ScienceDirect Topics

Physical adsorption is the simplest immobilization method, in which the biomolecules are attached to the surface through weak bonds such as van der Waals forces, hydrogen bonding, or hydrophobic interactions. Physisorption of biomolecules on an electrode surface is usually done by immersing the electrode surface into the biomolecule solution ...

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US3783049A - Method of platinum diffusion - Google Patents

a method for providing a controlled degradation of minority carrier lifetime in a silicon semiconductor crystal body employing h2pt (oh)6 as a source of platium. one gram of h2pt (oh)6 is dissolved in 130 cc. of anhydrous acetone. approximately 0.05 cc. of this solution is placed on the surface of a silicon semiconductor crystal body. the solution is dried and then the body is heated to the ...

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A Review of Preparation Methods for Supported Metal ...

Jan 01, 2017· Methods of catalyst preparation are very diverse, and each catalyst may be produced via different routes. The different preparation methods for the synthesis of supported Pt catalysts are summarized in Fig. 5 for Pt/SiO 2 [74 references], Pt/Al 2 O 3 [212 references], Pt/TiO 2 [376 references], and Pt/C [853 references] catalysts as reported in the literature from 2014 to 2017.

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(PDF) A Review of Preparation Methods for Supported Metal ...

Platinum catalysts over silica (SiO2), alumina (Al2O3), titania (TiO2), and carbon (C) supports have been selected as examples. ... methods, strong electrostatic adsorption (SEA) and charge ...

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(PDF) Surface Patterning of Glass via Electrostatic ...

Electrostatic imprinting is a highly suitable process for patterning large area and high efficiency glasses because it enables glass patterning at low temperatures with low pressures.

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Electrostatic Separation - an overview | ScienceDirect Topics

Electrostatic separation is a valuable technique for heavy mineral sand beneficiation, and the successful application of this process to separate ultrafine (<37 μm) coal particles may present an opportunity to treat the fines produced in many currently operating mineral processing circuits that account for significant rare earth losses ...

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US7701693B2 - Electrostatic chuck with heater and ...

An electrostatic chuck includes a base. The base has a support portion made of alumina ceramics, and a surface portion made of yttria ceramics. The surface portion forms at least a substrate mounting surface and side surface of the base on a surface of the support portion. Carbon contents in alumina ceramics of the support portion and yttria ceramics of the surface portion are 0.05 wt % or less.

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Separating the Platinum Group Metals by Liquid-Liquid ...

Separating the Platinum Group Metals by Liquid-Liquid Extraction NEW PROCESS HAS POTENTIAL ECONOMIC ADVANTAGES OVER CONVENTIONAL SELECTIVE PRECIPITATION By P. Charlesworth Marthc.! Kuqtenhurg Refiners (I'K) Limited, Ro>ston, England To extract the platinum group metals from ore, and to refine them to the very high purity required for their many applications,

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Electrostatic Separation of Minerals | Bunting - Redditch

Inside the latest ElectroStatic Separator from Bunting Electrostatic beneficiation. Electrostatic beneficiation of dry granular plant-based food (i.e, organic) materials have been investigated for over 140 years, with the first patent for electrostatic separation of wheat flour middlings filed as early as 1880.

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