Magnetic separation: A review of principles, devices, and applications

Oberteuffer, J. A.

doi:10.1109/tmag.1974.1058315

Cited by 321 publications

(108 citation statements)

References 8 publications

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“…The mineral oil was selected partly on the basis of matching oil viscosity at ambient temperature with that of F-T wax at higher temperature. Another possibility is that the slurry from the LaPorte AFDU had a larger fraction of fine particles and the magnetic force on those particles would be very significantly reduced (Oberteuffer, 1974).…”

Section: Resultsmentioning

confidence: 99%

Early Entrance Coproduction Plant

Anderson¹,

Anselmo²,

Berry³

et al. 2003

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The overall objective of this project is the three phase development of an Early Entrance Coproduction Plant (EECP) which uses petroleum coke to produce at least one product from at least two of the following three categories: (1) electric power (or heat), (2) fuels, and (3) chemicals using ChevronTexaco's proprietary gasification technology. The objective of Phase I is to determine the feasibility and define the concept for the EECP located at a specific site; develop a Research, Development, and Testing (RD&T) Plan to mitigate technical risks and barriers; and prepare a Preliminary Project Financing Plan. The objective of Phase II is to implement the work as outlined in the Phase I RD&T Plan to enhance the development and commercial acceptance of coproduction technology. The objective of Phase III is to develop an engineering design package and a financing and testing plan for an EECP located at a specific site.The project's intended result is to provide the necessary technical, economic, and environmental information needed by industry to move the EECP forward to detailed design, construction, and operation. The partners in this project are Texaco Energy Systems LLC (TES), a subsidiary of ChevronTexaco, General Electric (GE), Praxair, and Kellogg Brown & Root (KBR) in addition to the U.S. Department of Energy (DOE). TES is providing gasification technology and FischerTropsch (F-T) technology developed by Rentech, Inc. GE is providing combustion turbine technology, Praxair is providing air separation technology, and KBR is providing engineering.Each of the EECP subsystems were assessed for technical risks and barriers. A plan was identified to mitigate the identified risks (Phase II RD&T Plan, October 2000). The RD&T Plan identified catalyst/wax separation as a potential technical and economic risk. To mitigate risks to the proposed EECP, Phase II RD&T included tests of an alternative (to Rentech's Dynamic Settler) primary catalyst/wax separation device and secondary catalyst/wax separation systems. The team evaluated multiple technologies for both primary and secondary catalyst/wax separation.Based on successful testing at Rentech (outside of DOE funding) and difficulties in finalizing a contract to demonstrate alternative primary catalyst/wax separation technology (using magnetic separation technology), ChevronTexaco has selected the Rentech Dynamic Settler for primary catalyst/wax separation. Testing has shown the Dynamic Settler is capable of producing filtrate exceeding the proposed EECP primary catalyst/wax separation goal of less than 0.1 wt%.The LCI Scepter Microfiltration system appeared to be best suited for producing a filtrate that met the EECP secondary catalyst/wax separation standards of 10 parts per million (weight) [ppmw]. The other technologies, magnetic separation and electrostatic separation, were promising and able to reduce the solids concentrations in the filtrate. Additional RD&T will be needed for magnetic separation and electrostatic separation technologies to obtain 10 ppmw ...

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Section: Resultsmentioning

confidence: 99%

Early Entrance Coproduction Plant

Anderson¹,

Anselmo²,

Berry³

et al. 2003

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“…Recently, a number of "high intensity" magnetic separators are also available. This type of separators differ from the conventional designs by the employment of magnets of greater strength than usual [101].…”

Section: Recovery Of Magnetic Adsorbentsmentioning

confidence: 97%

“…Conventional magnetic separation devices are widely applied for the removal of magnetic materials such as tramp iron from various feed streams and also in the mineral processing of iron ores [101]. Depending on the plant and process design, magnetic separators can be applied to harvest the magnetic adsorbents after the precious metal separation stage.…”

Section: Recovery Of Magnetic Adsorbentsmentioning

confidence: 99%

Magnetic Adsorbents for the Recovery of Precious Metals from Leach Solutions and Wastewater

Aghaei

Alorro

Encila

et al. 2017

Metals

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Precious metals which include the platinum group, gold, and silver, play indispensable roles in high technology industries of the modern world due to their outstanding physical and chemical properties. As a result of diminishing availability of mineral sources, increasing demand, and environmental concerns, the recovery of precious metals from both leaching and industrial waste solutions is becoming a very important technology. Magnetic solid phase extraction (MSPE) is a technique that has received substantial consideration in the separation and recovery of precious metals because of the many advantages it offers compared to conventional methods. This technique is based on the extraction of different analytes from solutions using solid adsorbents with magnetic properties. This review focuses on different types of magnetic adsorbents, the main procedures used for synthesis, characterization and their application in precious metals recovery based on recently published literatures.

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“…The device uses the differences in the magnetic properties of materials. Magnetic purification methods have high selection capability and a high level of purification [8][9][10][11][12].…”

Section: Determination Of the Object Of Study Formentioning

confidence: 99%