KA6 Coking up in the grates

KA6 Coking up in the grates

PostBy: BennyLumpkin On: Tue Jan 28, 2014 8:03 am

Burning Millard and a little bit of Blaschak that's in my bin. I keep having my ash/coal bed coke up then not push off and then it stacks up and pushes coal over the sides. ... why?
BennyLumpkin
 
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KA6

Re: KA6 Coking up in the grates

PostBy: BennyLumpkin On: Tue Jan 28, 2014 8:22 am

If my reference to coking up doesn't make sense. .... what it's doing is burning into a solid clump and then won't push off the grate. It's hit and miss when it does it but usually in extreme cold when it's running longer.
BennyLumpkin
 
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KA6

Re: KA6 Coking up in the grates

PostBy: oliver power On: Tue Jan 28, 2014 8:23 am

Coal a little wet/damp? Friction on grate? The carpet on my Kaa-2 is more flat than your Ka-6. I don't have any problem. Dry wet/damp coal. Maybe sand grates. Any wax, or any other residue on grates from starting fire? Maybe try Buck size coal. I burn buck.
oliver power
 
Stoker Coal Boiler: KEYSTOKER Kaa-2
Hand Fed Coal Stove: Hitzer 50-93 & 30-95, Vigilant (pre-Vigilant-II)
Baseburners & Antiques: MANY (Mostly when burning wood)
Stove/Furnace Make: HITZER / KEYSTOKER
Stove/Furnace Model: 50-93 & 30-95 , Kaa-2

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Re: KA6 Coking up in the grates

PostBy: blrman07 On: Tue Jan 28, 2014 8:28 am

Your getting what I call clinker cakes. When your running your unit hard and burning a coal with a lower ash fusion rate, the ash will actually fuse together from the heat into a solid cake. This usually happens with coal that has a higher iron content or what is referred to as red ash coal. The fix is to mix in some buck or back off the air so it doesn't burn quite so hot. The long term fix is to blend in some white ash coal or coal that is lower in iron content.

This is not due to anything your doing and you don't have a problem with your Keystoker. It's the nature of the beast with higher iron content ash that is burned HOT in this cold weather. When the weather warms up a tad and it's not running so hard it will more than likely go away on its own.

Rev. Larry
New Beginning Church
Ashland Pa.
blrman07
 
Hand Fed Coal Boiler: Bucket a Day
Hand Fed Coal Stove: Vigilant Casting 2310
Baseburners & Antiques: rebuilding a 1906 March Brownback Double Heater, using a UMCO 1920's Pot Belly stove in the church
Coal Size/Type: Pea/Nut/Wood in the VC and anything that will fit in the Bucket a Day. It's not fussy.

Re: KA6 Coking up in the grates

PostBy: waldo lemieux On: Tue Jan 28, 2014 8:43 am

Ill bet if you mix in some wood pellets that will work also :yes:
waldo lemieux
 
Stove/Furnace Make: efm
Stove/Furnace Model: s-20

Re: KA6 Coking up in the grates

PostBy: BennyLumpkin On: Tue Jan 28, 2014 9:35 am

I'm needing to get coal this weekend. I've been burning Mallard (Harmony) and I had tried Blaschak which I hated.....I drive from Central PA so I can go pretty much anywhere. Any suggestions? It never did this with the old Harmony coal.
BennyLumpkin
 
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KA6

Re: KA6 Coking up in the grates

PostBy: McGiever On: Tue Jan 28, 2014 10:03 am

Best to call ahead for who will have your coal...stockpiles are maybe low at breakers cause dealers are replentishing their stockpiles and breakers can't operate in these temps.

As w/ all heating fuels, supplies are dwindling. :o
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: KA6 Coking up in the grates

PostBy: BennyLumpkin On: Tue Jan 28, 2014 10:14 am

That's what had me worried. ....I just want good coal. Mallard does ok until it's below 10 then it seems to cake up.
BennyLumpkin
 
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KA6

Re: KA6 Coking up in the grates

PostBy: McGiever On: Tue Jan 28, 2014 10:30 am

Remember, someone said to try some Buck and/or back off the air a little. ;)
It's not all the coals fault.
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: KA6 Coking up in the grates

PostBy: BennyLumpkin On: Tue Jan 28, 2014 1:10 pm

I'm not sure how much to back the air down. My draft is having perfect. I'm picking up buck from a local guy. .... he sells Blaschak but I'll give it a try. Will I need to make any major feed our air adjustments with the change?
BennyLumpkin
 
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KA6

Re: KA6 Coking up in the grates

PostBy: McGiever On: Tue Jan 28, 2014 1:21 pm

No, nothing major. Just do your usual manometer tweaks for draft after a 1/2 hr. steady run.
Then adjust the feed to proper position near end of grate.

Blaschaks usually has a higher fusion temp so you shouldn't see anymore "clinker cookies". :)
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: KA6 Coking up in the grates

PostBy: BennyLumpkin On: Tue Jan 28, 2014 9:32 pm

So I'm giving some buckwheat a try. Cleaned out all the rice and got it burning with buck and adjusted my air and damper to get my draft right after I had a normal coal bed and it's coking up again. When I cleaned the rice out I cleaned the whole boiler out do nothing is on the grates. What gives?
BennyLumpkin
 
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KA6

Re: KA6 Coking up in the grates

PostBy: blrman07 On: Wed Jan 29, 2014 5:03 am

If your clinker cakes didn't go away with switching to the buck then you need to back off the air flow a bit and cool the fire down. I always had clinkers when I ran the UAE original. Your coal may just have a higher iron content. If you can get to the Keystone Anthracite site on Route 54 in Girardville Pa. Their coal has a lower iron content and I don't get clinker cakes anymore since I started using their coal.

What you got to lose right? Give it a try. Always remember, mileage may vary based on individual usage and performance.

Rev. Larry
New Beginning Church
Ashland Pa.
blrman07
 
Hand Fed Coal Boiler: Bucket a Day
Hand Fed Coal Stove: Vigilant Casting 2310
Baseburners & Antiques: rebuilding a 1906 March Brownback Double Heater, using a UMCO 1920's Pot Belly stove in the church
Coal Size/Type: Pea/Nut/Wood in the VC and anything that will fit in the Bucket a Day. It's not fussy.

Re: KA6 Coking up in the grates

PostBy: Rob R. On: Wed Jan 29, 2014 6:16 am

How much ash is on the end of your grate at full load?

Air will go through the buck easily, turn it down until the fire stops just before the last set if air holes on the grates. (Do this when the stoker has been running hard for about 30 minutes)
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

Re: KA6 Coking up in the grates

PostBy: BennyLumpkin On: Wed Jan 29, 2014 8:13 am

Which air are you referring to? The fan that runs all the time or the flapper on the bottom?
BennyLumpkin
 
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KA6

Visit Lehigh Anthracite