Which coal is used in household?
– Option A: Anthracite is a hard, brittle, or black lustrous coal which is generally referred to as the hard coal. It comprises a high percentage of the fixed carbon and comparatively a low percentage of volatile matter. It possesses clean burning properties. Therefore, this type of coal is commonly used in households.
What are 4 types of coal?
Coal is classified into four main types, or ranks: anthracite, bituminous, subbituminous, and lignite. The ranking depends on the types and amounts of carbon the coal contains and on the amount of heat energy the coal can produce.
What is the most common type of coal?
Bituminous(Bituminous coal is a middle rank coal between subbituminous and anthracite.) is the most common variety of coal.
Why coal is not used as household fuel?
Due to its regional availability, coal is used for cooking e.g. in China and India. The World Health Organization does not recommend the use of unprocessed coal in households due to carcinogenic emissions and toxic elements such as fluorine, arsenic, lead, selenium, and mercury, which are not destroyed by combustion.
Which is the purest form of coal?
High grade (HG) and ultra high grade (UHG) anthracite are the highest grades of anthracite coal. They are the purest forms of coal, having the highest degree of coalification, the highest carbon count and energy content and the fewest impurities (moisture, ash and volatiles).
What is house coal used for?
What is House Coal? House coal has been a tried and tested solution for open fires within homes for decades. This natural product brings the benefit of versatility, as it can be used in open fires as well as heating appliances and multi-fuel stoves.
What is the dirtiest type of coal?
The combustion of lignite produces less heat for the amount of carbon dioxide and sulfur released than other ranks of coal. As a result, environmental advocates have characterized lignite as the most harmful coal to human health.