Lehigh density

 
LehighanthraciteMatt
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Post by LehighanthraciteMatt » Mon. Sep. 25, 2017 2:17 pm

Lightning wrote:Oh thank you sir, just curious more than anything else. Also, maybe you could shed some light on how they come up with the figures. Do they measure a single square foot? Or do they measure the volume of a large quantity and divide?
This is our average, it is figured out of an average of our daily analysis...

 
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Post by LehighanthraciteMatt » Mon. Sep. 25, 2017 2:18 pm

lsayre wrote: Matt, what is this figure for pea? For nut?
Ill get Pea, Nut and Stove. I was in NC at a sales meeting. Sorry for the delay all....

 
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Post by LehighanthraciteMatt » Tue. Sep. 26, 2017 1:28 pm

Our averages are as follows for Pea, Nut, and Stove.
P 59.27#/cuft
N 58.4#/cuft
S 56.14#/cuft


 
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lsayre
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Post by lsayre » Tue. Sep. 26, 2017 2:55 pm

Many thanks Matt!

 
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Lightning
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Post by Lightning » Tue. Sep. 26, 2017 4:06 pm

LehighanthraciteMatt wrote: Our averages are as follows for Pea, Nut, and Stove.
P 59.27#/cuft
N 58.4#/cuft
S 56.14#/cuft
Cool. I had previously done measurements on a load of nut size coal a few years ago and came up with 59-60 pounds per cubic foot. Even though it wasn't Lehigh, maybe I was pretty close :)
Your figures show nut size to take up a hair over 34 cubic feet per ton.. :yes:

 
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lsayre
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Post by lsayre » Tue. Sep. 26, 2017 5:38 pm

I'm surprised to find that rice breaks the lbs./cu-ft density trend.


 
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Post by Rob R. » Tue. Sep. 26, 2017 7:15 pm

lsayre wrote:I'm surprised to find that rice breaks the lbs./cu-ft density trend.
Richard has been telling us that for years.

 
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Post by Lightning » Tue. Sep. 26, 2017 7:46 pm

Actually, I thought Richard said that the stove size was most dense and the rice was the least.

 
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Post by Pacowy » Wed. Sep. 27, 2017 9:14 am

Lightning wrote:Actually, I thought Richard said that the stove size was most dense and the rice was the least.
Yes, see for example Coal Bin Lumber, Mon Jun 10, 2013 6:43 am. Elsewhere I believe he said this could be affected by vibration, so if the Lehigh testing includes steps to "settle" the sampled coal, that might cause a different result from Richard's observations from the loadout. For sizing a bin, I think the relevant density is Richard's, since most bins don't allow you to settle the coal through shaking/vibration.

Mike

 
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Post by KingCoal » Wed. Sep. 27, 2017 8:49 pm

LehighanthraciteMatt wrote:Our average density for rice coal is 56#/cuft

Ill get Pea, Nut and Stove. I was in NC at a sales meeting. Sorry for the delay all....[/quote]


Our averages are as follows for Pea, Nut, and Stove.
P 59.27#/cuft
N 58.4#/cuft
S 56.14#/cuft[/quote]

i'll testify for the nut figure. the 23.1 ton load i received last Nov. fit very nicely in 800 cu ft of space. which means it was much closer to the 58.4 #'s per c.f. than the 50 #'s per c.f. i had allowed for.

in the begining i thought i had been seriously shorted till i started digging and found that "50" is just a good round number commonly quoted as a precaution to assure room for a given purchase order regardless of size rather than a "ruler" to gauge quantity accurately.

i also had the certified scale slip stating 23.1 tons were loaded on that truck so i had to very closely measure my filled area and found that this coal must indeed weigh more per c. f. than i thought.

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