High Selective Oil Shale Mining

Väizene, Vivika; Valgma, Ingo; Iskül, Riho; Kolats, Margit; Nurme, Martin; Karu, Veiko

doi:10.3176/oil.2013.2s.10

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…Oil shale was considered for a long time an economic hope, hence programs to operate oil shale as an energy source were launched by Scotland, Australia, France and China [1][2][3][4]. These programs eventually demonstrated that oil shale was far from being a substitute for oil because of high cost and noncompetitiveness against conventional petroleum.…”

Section: Introductionmentioning

confidence: 99%

Comparison of chemical and physical activation processes at obtaining adsorbents from Moroccan oil shale

Oumam¹,

Abourriche²,

Mansouri³

et al. 2020

Oil Shale

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Within the Moroccan natural resources valorisation scheme, new adsorbents have been prepared from oil shale by chemical and physical activation processes. The activation process the authors have developed in this study give effective adsorbent materials. In view of the physico-chemical properties of these materials and application to the treatment of water loaded with a metal (Cr 6+ ion) or organic (methylene blue (MB)) pollutant, it is concluded that the chemical activation process of oil shale at low temperature (250 °C) affords the best material. The material's yield is good in comparison with the physical activation at the same temperature and the process is energy saving differently from that at 450 °C. Moreover, the chemical activation of oil shale with phosphoric acid at 250 °C produces a material with a good yield (about 70%), a high specific surface area (approximately 600 m 2 /g) and a highly porous structure, which gives it a high retention of methylene blue and the Cr 6+ ion.

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Section: Introductionmentioning

confidence: 99%

Comparison of chemical and physical activation processes at obtaining adsorbents from Moroccan oil shale

Oumam¹,

Abourriche²,

Mansouri³

et al. 2020

Oil Shale

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“…At the same time, selective crushing could give considerable increase in yield [4]. Most of the selective breakage and crushing technologies have already been tested in Estonia on kukersite [5,6].…”

Section: Introductionmentioning

confidence: 99%

Interdependence Between Point Load Index, Compressive Strength and Crushing Resistance of Jordan Oil Shale and Relation to Calorific Value

Väizene¹,

Valgma²,

PASTARUS³

et al. 2015

Oil Shale

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Rock parameters are important to be considered in mine design. Physical-mechanical tests were carried out on oil shale and dolostone samples from the Attarat Um Ghudran oil shale area in central Jordan, in order to determine the rock mass properties. It was necessary for assessing the feasibility of excavation and processing. Half-core and core samples were compressed up to failure during the Point Load Test (PLT) and Uniaxial Compressive Strength Test (UCST), respectively, and the PLT index (PLTI) and compressive strength were calculated. A conversion factor between PLTI and UCS for Jordan oil shale and dolostone was determined. The Crushing Resistance Test (CRT) on samples was conducted. Taking into consideration confidence limits, the recommended conversion factor 1 for Attarat oil shale and dolostone is respectively 14 and 12 and the recommended conversion factor 2 is 33 and 12, respectively. This knowledge is relevant in designing selective excavation and dry separation of oil shale.

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