The objectives of this review are to provoke a discussion on the preservation of the coal
industry of the Republic of Bulgaria in the 21st century, to indicate and to point out the modern
technologies of lignite processing.
The reserves of Bulgarian brown coals – lignites are estimated at 2.1 billion tons.
The volume of lignite production in Bulgaria is 25 million tons per year and can be increased up
to 35 million tons per year.
Thus, the reserves would be sufficient for 65 years.
Currently, Bulgarian lignites are used as fuel for 4-coal CHP plants and provide 25% of the
country’s energy balance.
Mining of 90% of lignites in Bulgaria is carried out at the Maritsa Iztok Coalfield
(https://www.marica-iztok.com/en/) deposit in the administrative region of Stara Zagora.
The production is carried out by the Joint Stock Company “Mini Maritsa Iztok” – in 3 open-pit mines.
The number of staff is 7 050 people…
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