Українська
РусскийDue to the high content of volatile substances, such coal quickly ignites and burns quickly. Coal of these grades is available and suitable for almost all types of boilers, but for complete combustion this coal must be supplied in small portions so that the released volatile substances have time to completely combine with atmospheric oxygen. Complete combustion of coal is characterized by a yellow flame and transparent smoke gases; incomplete combustion of volatile substances produces a crimson flame and black smoke.
We offer the following brands
hard coal
hard coal
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Attention! This list of coals offered for delivery is not exhaustive.
If you are interested in other brands/fractions of coal products, please contact by phone
If you are interested in other brands/fractions of coal products, please contact by phone
Characteristics of hard coal
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Burning temperature of coal
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Coal, the combustion temperature of which largely depends on its type and quality.
Coal is divided into 3 types: brown, hard and anthracite.
Brown coal contains impurities and is considered less useful in terms of heat output. Ignition occurs at 230-250°C. During combustion, the temperature reaches 1900°C.
Coal ignites at 400°C. The combustion temperature is 2100°C.
Anthracite is considered to be directly effective and high-quality. Ignition occurs at a temperature of -600°C and reaches the upper limit of -2250°C.
Coal calorie content
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when burning 1 kg of hard coal, it releases
when burning 1 kg of brown coal,
when burning 1 kg of anthracite,
6450 kcal
3100 kcal
6700 kcal
27 MJ
12,98 MJ
28,05 MJ
The calorific value of coal must be taken into account when organizing cost-effective heating of premises and low cost of products manufactured using coal.
The caloric content of hard coal, depending on the grade, ranges from 6600 to 8750 calories.
Anthracite produces heat in the amount of 6700 kcal, but it is difficult to light, while brown coal produces from 2000 to 3100 kcal, ignites instantly, but burns quickly, not retaining heat.
Much of the efficient conversion of coal into heat depends on the furnace or boiler plant. Combustion in a furnace has a low efficiency, since more than half of the heat goes up the chimney. Using coal for combustion in a boiler, the efficiency is 70-75%.
Coal brands
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D – with a long flame. The coal of the “D” brand is considered the most popular, suitable for use not only in boilers, but also for heating rooms using stoves. This fuel burns with a flame like firewood and retains heat for a long time. No extra air supply is required for ignition. It is often used for heating administrative buildings (schools, hospitals, kindergartens, etc.).
Coal brand T is lean: it burns without a flame. With a high carbon content (90%) and maximum heat output, it is suitable for forges, boiler houses and effectively heats residential premises. Mixed with anthracite, it is used in gas generators for the production of water gas. In housing and communal services, fuel grade T is used for heating mobile electrical installations and other objects.
The most popular and inexpensive fuel is considered to be coal of the DPK brand. Due to the content of 15% moisture, coal easily ignites and retains heat for a long time.
For detailed information, you can contact our managers. Monolit-Energo specialists will advise you on the selection of the required grade of coal, draw up a contract for the purchase of coal and its subsequent delivery.
Buy hard coal: characteristics
for the right choice
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Coal has long been the main source of thermal energy. When coal is burned, a person receives heat used to heat living spaces and water. In industry, coal is used to smelt metal, and at power plants, due to the combustion of fuel, it is converted into electrical energy.
Buying coal is not difficult, but in order to use it as efficiently as possible, you need to know all the characteristics and understand the different brands.
The characteristics of coal depend largely on the place of its extraction, and the main differences are based on its properties:
- Density ranges from 1.28 to 1.53 g
- Carbon content ranges from 75 to 97%
- Mechanical strength, the parameter of which should be (brown coal 40 kg/cm2, anthracite 300 kg/cm2
- Volatile emissions from 2 to 35%
- Moisture content from 4 to 15%
- Ash yield from 2 to 30%
- Specific heat of combustion from 6500 to 8600 kcal/kg.
Before you buy coal from our company, you should know that the main thing in choosing coal for heating premises is the technical parameters of the boiler or other industrial unit, which allow the use of a particular combustion temperature of coal.