Usage of Estonian Oil Shale

Väli, Erik; Valgma, Ingo; Reinsalu, Enno

doi:10.3176/oil.2008.2s.02

Cited by 36 publications

(33 citation statements)

References 5 publications

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“…Oil shale usage has always been related on available mining and processing technologies on the one hand and world oil and petroleum prices on the other. This also holds true today when new technologies are being applied at power or oil processing plant [2].…”

Section: Introductionmentioning

confidence: 89%

Sustainable Development in Estonian Mining

Šommet¹

2013

Scientific Journal of Riga Technical University. Environmental and Climate Technologies

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-Importance and demand of high qualified mining material (carbonate rocks, oil shale) are growing nowadays. Deposits are widespread around the world. Is it possible to create the sustainability paradigm, that helps to manage quarries adequately to improve overall effectiveness of the company in total? This study focuses especially on the mining industry. This paper will introduce modern systems and a new one, that allows to make an indexation of the company by mining sustainability index and gradation of the company by its wellness; also brings several benefits for future sustainable development.

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Section: Introductionmentioning

confidence: 89%

Sustainable Development in Estonian Mining

Šommet¹

2013

Scientific Journal of Riga Technical University. Environmental and Climate Technologies

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“…Also surface miners have been used for selective mining of the oil shale [46] [47]. For analysing possibilities of selective mining, range of tests and theoretical studies have been carried out during last decades [2].…”

Section: B Extractingmentioning

confidence: 99%

Reduction of Oil Shale Losses

Valgma

Väizene

Kolats

et al. 2015

ETR

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Oil shale utilisation losses reach 70% in some cases. These are closely related to legislation, backfilling and waste rock usage. Much smaller sections include production of oil, electricity and chemicals in which most of the research and development is performed today. Current urgent topics for investigating, testing and developing of oil shale mining related questions are backfilling, mechanical extracting of shale, fine separation, selective separation and optimised drilling and blasting. Reducing oil shale losses will be more actual in the future, because the depth of mining increases and the taxes for resource and pollutants are increasing as well.

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“…However, being solid and having a combustible potential, using oil shales as a solid fuel substitute is also a known practice. Estonia is particularly an outstanding example for such a practice and in use of oil shales in thermal power production, similar to coal and lignite usage [3]. Considering oil shales as an alternative solid fossil fuel rather than an unconventional oil source introduces envrionmental restrictions, which apply to utilization of coal such as ash, post-combustion gases, etc.…”

Section: Introductionmentioning

confidence: 99%

Challenges related to flotation cleaning of oil shales. Issues due to compositional and surface features and post-grinding surface behavior

Altun

2016

E3S Web Conf.

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Abstract.Oil shale is an important energy resource alternative. Despite its recognition as an unconventional oil source, oil shale is also considered as an important solid fossil fuel alternative to coal and lignites due to the solid form and remarkable extent of organic content. Utilization possibilites, similar to coal and lignites, have been considered in the past decades and direct use of oil shales in thermal power production has been possible in countries like Estonia and China. In the perspective of utilization of oil shales in a similar manner to coal and lignites, problems and restrictions related to the inorganic ash-making and potentially pollutant constituents are applied. In this respect, cleaning of this important energy source through mineral processing methods, particularly by flotation, is an outstanding option. However, on the basis of unique features and distinctive characteristics, treatment of oil shales like a type of coal is a big perception and may be highly misleading. This paper discusses specific challenges regarding flotation behavior of oil shales with reference to the surface characteristics and behavior of oil shale entities -probably the most important aspect that determines the efficiency and success of the flotation based cleaning process.

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Usage of Estonian Oil Shale

Cited by 36 publications

References 5 publications

Sustainable Development in Estonian Mining

Sustainable Development in Estonian Mining

Reduction of Oil Shale Losses

Challenges related to flotation cleaning of oil shales. Issues due to compositional and surface features and post-grinding surface behavior

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