To buyers

To improve the quality of finished commercial products, the extracted coal passes the enrichment stage. In the process of enrichment, the ash content of coal decreases and its caloric content increases. In addition, the concentrate is divided into different grades by size, which allows JSC "Donugol" to supply products that fully meet the requirements of various consumers.

At the present stage, 100% of the company's coal is being enriched, which ensures high quality characteristics of all commercial products. The strategic task is to introduce and master the following technologies in the coming years: removal of physico-chemical bound moisture from anthracite (coal drying), enrichment of 0.2-1 mm class blocks, briquetting of a coal spike and other modern technologies that allow to obtain waste-free coal production

Quality indicators

Products after manual sampling

AK (50-100 ММ)
LARGE
Ash content for dry condition no more than 10 %
Volatile substances no more than 4 %
Moisture no more than 5 %
Lowest heat of combustion at least 7,200 kcal/kg
Total sulfur for dry condition no more than 1 %
Trivia Content no more than 15 %

Products after enrichment

АО (25-50 ММ)
NUT
Ash content for dry condition no more than 6 %
Volatile substances no more than 3.5 %
Moisture no more than 6 %
Lowest heat of combustion at least 7,200 kcal/kg
Total sulfur for dry condition no more than 1 %
Trivia Content no more than 12 %
АМ (13-25 ММ)
SMALL
Ash content for dry condition no more than 5 %
Volatile substances no more than 3.5 %
Moisture no more than 6.5 %
Lowest heat of combustion at least 7,200 kcal/kg
Total sulfur for dry condition no more than 1 %
Trivia Content no more than 17 %
АС (6-13 ММ)
SEED
Ash content for dry condition no more than 4 %
Volatile substances no more than 4 %
Moisture no more than 8 %
Lowest heat of combustion at least 7,200 kcal/kg
Total sulfur for dry condition no more than 1 %
Trivia Content no more than 18 %
АШ (1-6 ММ)
BAYONET
Ash content for dry condition no more than 4 %
Volatile substances no more than 3 %
Moisture no more than 9.5 %
Lowest heat of combustion at least 7,200 kcal/kg
Total sulfur for dry condition no more than 1 %

Products after sieving

АШ (0.2-1 ММ)
BAYONET
Ash content for dry condition no more than 30 %
Volatile substances no more than 6 %
Moisture no more than 10 %
Lowest heat of combustion at least 5,000 kcal/kg
Total sulfur for dry condition no more than 1 %
Камни

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