What are the types of low rank coals? What is commonly used at present? Where can I buy
Lean: volatile and moderate adhesion, mainly used for coking. In the coking process may produce some of the glial, glial layer thickness of 6 - 10mm. Produced by coal coking coke, high mechanical strength and abrasion resistance is relatively poor. In addition to the part of high ash and high sulfur coal, coal and other coal blending coking often.
Coal: coal soot level top coal, it is characterized by a higher ignition temperature (350 - 360 DEG C), high calorific value, weak bond or not. Coal is mainly used for power generation and power plant boiler fuel. The use of coal, and the other with the use of high volatile coal is also a good way.
Anthracite: high fixed carbon content, high fire point (about 360 to 420 DEG C), high true relative density (1.35 ~ 1.90), low volatile yield and low hydrogen content. In addition to power generation, anthracite is mainly used as raw material for gasification (fixed bed gasifier) for the production of synthetic ammonia, fuel and briquette. Some low ash, low sulfur and high HGI anthracite is also used as raw material for blast furnace injection.
First classification: (power coal in the following)... More, slowly lookTypes of coal (according to the degree of carbonization)1 peat (Caomei, peat) 8380~10500kJ/kg2 lignite 10500~16700kJ/kg3 bituminous coal 21000~29400kJ/kg4 anthracite (anthracite) 21000~25200kJ/kg
