化學組成, 鍵及結構：(礦物)

煤炭

Chemical composition, bonding and structure: (Mineral)

Coal , Fossil wood

原生物：(化石)

煤的形成煤是一種固態的可燃性有機岩，為由植物殘骸經過複雜的地質作用後變化而形成。

Living Specimens: (Fossil)

Coal Formation Coal is a solid, flammable, organic rock that is formed by complex changes in the geological structure of plant remains

褐煤外觀呈褐色，少數為黑褐色甚至黑色，揮發分含量較高，有利於著火。但其灰分和水分較高，發熱量較低，一般小於16750kJ/kg。含水分較高的年輕褐煤，則燃燒性能較差，而且灰熔點也較低。褐煤的化學反應性強，在空氣中存放極易風化成碎塊，容易發生自燃。

Lignite brown appearance, a handful of dark brown or even black, higher volatile content, is conducive to the fire. However, its higher ash and moisture, lower calorific value, generally less than 16750kJ / kg. Young lignite containing higher water, the combustion performance is poor, and the ash melting point is lower. Lignite chemical reactivity, stored in the air easily weathered into pieces, prone to spontaneous combustion.

可作化工原料、催化劑載體、吸附劑、淨化污水和回收金屬等。

可直接用作家庭燃料、工業熱源燃料及發電的燃料，也可用作氣化、低溫乾餾等的原料。

for chemical raw materials, catalyst carriers, adsorbents, sewage purification and recovery of metals.

It can be directly used as fuel for household fuel, industrial heat source fuel and power generation, as well as for gasification and low temperature carbonization.

中國

德國

China

Germany