Concept of low-metamorphic coal
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I would like to ask what low-grade metamorphic coal is. Could you please provide an authoritative source for this definition, as well as the problems that tend to arise during the gasification process? Thank you so much!
Coal in the low-grade metamorphism stage is characterized by low ash and sulfur content, high volatility, and high reactivity. The main types of such coal are lignite and low-grade bituminous coal. Low-grade coal: a type of coal. Coal that produces a long flame and smoke when burned, and is of lower degree of coalification.
Excuse me, is there a source for this?
Lowly metamorphosed coal refers to coal that has a low degree of metamorphism from a coalification perspective; in simpler terms, it is coal that is relatively young and formed at a later time. Such as lignite.
Baidu: [What is low-grade metamorphic coal]? Take a look
Check the standards; ordinary people can’t remember them
Xie Kechang has a book on coal, covering its structure and reactivity; take a look to see if it includes any information on that topic