Prospective of electric impulse processes for the study of the structure and processing of mineral raw materials

Usov, Anatoly; Цукерман, В. А.

doi:10.1016/s0167-4528(00)80008-3

Cited by 11 publications

(13 citation statements)

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“…The opinion and factual data used in the monograph by Bluhm (2006) Russian by Burkin et al (1975) and Semkin (1989), which are summarized by, Semkin et al (1995) and Usov and Tsukerman (2000).…”

Section: Energy Efficiency Of Electrical Disintegrationmentioning

confidence: 99%

“…The opinion and factual data used in the monograph by Bluhm (2006) are given in the thesis for the degree of Doctor of Philosophy by Tsukerman, 1970 in former Soviet Union and publications in Russian by Burkin et al (1975) and Semkin (1989), which are summarized by, Semkin et al (1995) and Usov and Tsukerman (2000).…”

Section: Energy Efficiency Of Electrical Disintegrationmentioning

confidence: 99%

“…Comparison of the energy balance in electric pulse and mechanical communition had been given by (Usov and Tsukerman, 2000), as well as in the PhD theses of former Soviet Union (Tsukerman in 1970 and Sjemkin in 1989), according to (Kurets et al, 2002). …”

Section: The Application Of Pre-weakening By High Voltage Pulsementioning

confidence: 99%

“…In this context, the technology to break rocks using high voltage pulses has been discussed as a potential route for comminution (Usov and Tsukerman, 2000;Usov and Borodulin, 2008;Shi et al, 2012;Shi et al, 2014b). In this technology a high voltage electrical pulse is transferred to the solid dielectric immersed in water, causing electrical breakdown and disintegration (Andres, 1995).…”

Section: Introductionmentioning

confidence: 99%

“…This value is in the same order of the energy efficiency for mechanical comminution equipment (0.002-1%). In conclusion, electrical disintegration is energetically comparable to mechanical fragmentation method.The opinion and factual data used in the monograph by Bluhm (2006) Russian by Burkin et al (1975) and Semkin (1989), which are summarized by, Semkin et al (1995) and Usov and Tsukerman (2000). …”

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confidence: 99%

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A study of the applications and modelling of high voltage pulse comminution for mineral ores

Zuo¹

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The pre-treatment of ore particles by high voltage pulses (HVP) at low specific energy has a potential to reduce the energy consumption and operation costs. Nevertheless, the influencing factors and the behavior of HVP breakage of ore particles have not yet been fully understood. The overall objective of this thesis is to study the applications and modelling of HVP breakage by understanding the behaviour of ore particles subjected to pulse discharge. The three areas investigated are:1)The effects of mineral properties on HVP selective breakage and the application of this selective breakage in ore pre-concentration.2) The methods to evaluate and to characterize HVP breakage results. 3)Modelling ore particle behavior in HVP breakage.In this project, the selectivity of HVP breakage is studied using synthetic samples made of construction grout and pyrite grains. The result confirms that the breakage response of particles is dominated by the locality of electrical breakdown channel. The electrical breakdown channel locality is controlled by the grains of minerals with high conductivity/permittivity and their location in a particle. This understanding has led to the discovery of a novel technique for ore preconcentration using high voltage electrical pulses. The technique utilises metalliferous graininduced selective breakage, under a controlled pulse energy loading, and size-based screening to separate the feed ore into two products for splitting of ores by grade.To evaluate HVP breakage results, a t 10 -based model was developed to predict the degree of impact breakage, t 10 , of pulse-treated particles from that of untreated particles. This model incorporates only one parameter, C Ab , which is equivalent to percentage change of A×b values. The t 10 -based model can be used to assess energy reduction due to the pre-weakening effect in the downstream mechanical comminution process. A Wide-size JKRBT characterisation method was created, initially for quick determination of breakage characteristics of the HVP product; ultimately for use as an express ore breakage characterisation method. In this method, particles in wide size range are tested as one size class in the JKRBT by single-particle breakage mode, significantly simplifying the feed particles preparing and product sizing procedures. A conceptual design of an on-line ore ii competence measuring system based on this principle is proposed. Both the t10-based model and the Wide-size JKRBT method utilise a size-dependent breakage model previously developed by the JKMRC.Behaviour of ore particles in HVP breakage was investigated with a pilot scale and a laboratory scale HVP breakage devices. The effects of specific energy, pulse voltage, cumulative discharges, feed particle size and ore particle breakage pattern (body breakage or surface breakage) were investigated. Based on the data, a model structure for HVP breakage was developed, which incorporates four sub-models using the similar structure to predict four HVP breakage indices: body breakage probability...

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Section: Energy Efficiency Of Electrical Disintegrationmentioning

confidence: 99%

Section: Energy Efficiency Of Electrical Disintegrationmentioning

confidence: 99%

Section: The Application Of Pre-weakening By High Voltage Pulsementioning

confidence: 99%