Wrong size coal for efm

Wrong size coal for efm

PostBy: zickeres On: Fri Jan 23, 2009 6:04 pm

I recently got two tons of rice delivered, To my suprise,i think there is some buck mixed in with it. I been screening my coal with the same 1/2' inch screen for 25 years and never had this much coal not make it threw the screen. From what i hear the quality of coal is not that good in the scranton wilkes-barre area, apparent by this delivery. My question is,this coal is about 1/2 by 9/16 and some pieces about 3/4 inches long,will i be ok to just throw it in the drum? I see where a lot of guys just burn buck in there efm.s, do they usually screen it,and what size screen? Thanks Rick
zickeres
 
Stove/Furnace Make: efm

Re: Wrong size coal for efm

PostBy: coal berner On: Fri Jan 23, 2009 6:16 pm

zickeres wrote:I recently got two tons of rice delivered, To my suprise,i think there is some buck mixed in with it. I been screening my coal with the same 1/2' inch screen for 25 years and never had this much coal not make it threw the screen. From what i hear the quality of coal is not that good in the scranton wilkes-barre area, apparent by this delivery. My question is,this coal is about 1/2 by 9/16 and some pieces about 3/4 inches long,will i be ok to just throw it in the drum? I see where a lot of guys just burn buck in there efm.s, do they usually screen it,and what size screen? Thanks Rick

Barley / Buck # 3 should be 3/16 x 3/32 - Rice / Buck #2 coal should be 5/16 x 3/16
Buckwheat # 1 should be 9/16 x 5/16 - Pea coal should be 13/16 x 9/16
Aslong as you do not have Pea Size Pieces going in you should be ok. I burn Buck in my 520 What I do is Take the real big
pieces put them on the floor hit the with a hammer throw them into the drum . The buck will crunch a little going up threw the Auger Tube . Just Take the bigger pieces and break them up . My Screen is 3/4 " Sq holes
coal berner
 
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520

Re: Wrong size coal for efm

PostBy: Richard S. On: Fri Jan 23, 2009 6:22 pm

I know EFM doesn't recommend it but I've had EFM customers that have ran straight buck. As coal berner mentioned you might hear some crunching but it shouldn't be an issue.
Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite

Re: Wrong size coal for efm

PostBy: e.alleg On: Fri Jan 23, 2009 8:15 pm

I ran a ton of buck through mine, it burned hotter than rice coal but also created much more noise and fines. In the end I switched back to rice coal, I was worried about the extra wear and tear caused by grinding up the coal. Burn it if you got it, no question about it, but if given a choice I would stick with the rice size.
e.alleg
 
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Re: Wrong size coal for efm

PostBy: coal berner On: Fri Jan 23, 2009 8:48 pm

e.alleg wrote:I ran a ton of buck through mine, it burned hotter than rice coal but also created much more noise and fines. In the end I switched back to rice coal, I was worried about the extra wear and tear caused by grinding up the coal. Burn it if you got it, no question about it, but if given a choice I would stick with the rice size.

ED I have been burning buck threw mine and it does not make more fine then Rice which i am burning now and using
twice as much coal aswell with buck be bigger in size you can turn the feed rate back and save coal because it burns hotter then Rice. But you must increase the air to burn it more complete .Also buck is much cleaner then Rice is always dirtier then any larger size coal so unless your buck is over sized buck you should not have more fines in it . I have twice as mch fines burning Rice then Buck . And a lot more BTU's with buck Per lb .
coal berner
 
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520

Re: Wrong size coal for efm

PostBy: e.alleg On: Sat Jan 24, 2009 2:11 am

I might have gotten oversize buck, the average piece was about the size of a quarter, some were like the size of my thumb. It really sounded like the auger was grinding the coal up. crunch,crunch...
e.alleg
 
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Re: Wrong size coal for efm

PostBy: Richard S. On: Sat Jan 24, 2009 1:45 pm

e.alleg wrote: the average piece was about the size of a quarter,


That's pea coal and the quarter analogy is generally what I use to describe it. Buck is about the size of a dime.
Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite

Re: Wrong size coal for efm

PostBy: e.alleg On: Sat Jan 24, 2009 9:13 pm

here's what I had
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e.alleg
 
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Re: Wrong size coal for efm

PostBy: coal berner On: Mon Jan 26, 2009 1:05 am

e.alleg wrote:here's what I had

Rice Size Should be 5/16 to 3/16 Buckwheat # 1 Should be 9/16 to 5/16 Pea Should be 13/16 to 9/16

http://www.readinganthracite.com/images ... 0front.pdf
coal berner
 
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520

Re: Wrong size coal for efm

PostBy: stoker-man On: Thu Jan 29, 2009 6:48 am

I can't deviate from the rice coal that efm recommends in the stoker, but I can say that I have heard good reports about burning buckwheat in them.

Coalberner stated the advantages of less dust and being washed and you'll have to experiment with the air and feed ratios.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: Wrong size coal for efm

PostBy: lincolnmania On: Thu Jan 29, 2009 7:06 am

i am burning rice right now because the conveyor for the buck was out of order.......i had to change my settings, i had to add more feed and reduce the air to get the same amount of heat as i do with buck......the rice ash is making patties with unburnt coal on the edges......hopefully i can get buck in a few weeks
lincolnmania
 
Hot Air Coal Stoker Furnace: efm af-150 1982
Hot Air Coal Stoker Stove: alaska kodiak stoker 1986
Hand Fed Coal Stove: warm morning 1980 kenmore

Re: Wrong size coal for efm

PostBy: coal berner On: Thu Jan 29, 2009 3:03 pm

stoker-man wrote:I can't deviate from the rice coal that efm recommends in the stoker, but I can say that I have heard good reports about burning buckwheat in them.

Coalberner stated the advantages of less dust and being washed and you'll have to experiment with the air and feed ratios.

also burning less coal aswell with Buck Rice always has dirt & lots of fines in it because of it size and being mix with the smaller barley size coal . as stoker - man say you will have to find the sweet spot you will reduce the feed rate and
increase the air.But watch you do not add two much air burning coal down into your auger tube my accur and burning up your grates can happend to.I am not the only person in the world that every burned Buck in a efm since efm been making
them People have been burning buck in them I know of few old timer's that has used buck since they bought there efm's
back in the 50's and never had problems with burning the correct size buck.Them units are still in service today .
And them guys are in there late 70's and early 80's And probably forgot more about efm's then anyone on the forum
knows. If you do burn it You have be careful & watch what things are doing and correct any issue that may come up .
or just stick with burning Rice and Leave the Buck for me to burn :P
coal berner
 
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520