Bituminous coal?

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Ultralume
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Post by Ultralume » Wed. Mar. 02, 2022 10:56 pm

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Does anyone know what kind of coal this is? The first picture has a few pieces of Anthracite stove coal from Cornwall Coal. The larger dull pieces appear to be bituminous. I'm not familiar with bituminous other than small "blacksmith " pieces and nut sized "house coal " bituminous coal sold by Cornwall Coal in the Hudson Valley region of New York. My experience is that it smokes, softens up while it burns and forms porous looking coke. Smells like burning asphalt.

The unknown coal will burn for about an hour to 1.5 hours with yellow flame. It does NOT smoke. It does not appear to coke up. It doesn't get soft or expand. It then burns like Anthracite. Once burning like Anthracite it has layers - laminations similar to Anthracite. It doesn't smell like asphalt nor have the sour smell of well lit burning Anthracite. The best way I can describe its smell is that of some biomass logs once they're burning and burning bakelite. Once burnt up the remaining ash is white.
Does anyone know what kind of bituminous coal this might be? It certainly a great coal.

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lzaharis
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Post by lzaharis » Wed. Mar. 02, 2022 11:44 pm

It looks like Sub bituminous coal, and the burn you describe exactly like Sub Bituminous Coal.

 
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McGiever
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Post by McGiever » Wed. Mar. 02, 2022 11:45 pm

Don't really know...but it does some what sound like the description of a eastern Kentucky Bituminous.

See if this helps: https://www.uky.edu/KGS/coal/coal-type.php

https://www.uky.edu/KGS/coal/coal-rank.php


 
fig
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Post by fig » Fri. Mar. 04, 2022 12:51 pm

The bit I get here is much lighter in weight then anth. It also breaks easier. Maybe you could break a piece off the same size as your anth and compare it.

 
Ultralume
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Post by Ultralume » Sat. Mar. 05, 2022 12:01 am

Fig, the pieces of anthracite feel like rocks. Dense. The unknown bituminous is lighter but not by much.. It feels more like plastic than a rock. I’ve been burning more of it. In larger quantity it will smoke and soot up the glass. However it does not soften or expand nor does it smell like asphalt when burning. It begins to glow and burn like anthracite once the volatiles burn off. Interesting coal. I’d love to get more. Bituminous flames are nice to look at..

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