My friend 3 days ago got 1 ton of rice from uae Harmony and previously he used this coal as well as I in our EFM520's. and it burned excellent until he gave me a call to come check out what (the new coal from Harmony) is doing> the coal burned and created a clinker straight up off of the pot to the roof of the boiler like a huge popcorn ball :shock: :shock: :shock: for the and outened the fire in the pot and jammed up the stoker mechanism and sheared the pins on the worm assmembly :cry: after getting everything back to normal it did it again and again i> I get my coal in the summer to load up it makes me wonder if i should do that again i cant imagine shoveling 10 tons and having that problem. i think i might be looking for a new supplier also maybe blashack coal i know it is a litter more pricier but closer to my house and 35 more a ton seems to be worth the aggrivation of saving some money.
p.s. we also tried different settings and it keeps doing it the only thing u have to keep up is poking the clinker apart. and the grates and gaskets are fine this boiler is on the 5th ton ever burned in it.
my solution is to try maybe mixing blashack coal with it until the harmony coal is gone to control the fusing of ash. any solutions are welcomed
I burned 2110lbs From Dec to Jan Buck I had Know Problem except you should Screen it there where Pea size mixed in with it . Not Good They are not cleaning the loader buckets out good enough when hauling the different sizes.So you will
get bigger or smaller sizes mixed in.The coal is freezing to the bucket inside in this cold weather. I Just Picked up
1440lbs on Monday of there Rice to try it out. It had a lot of Nut size mixed in with it and one big rocks
4.5" x 5.5" x 1/2" Not good
As Far as ASH Fusion / Clinkers I had not had a Problem . If you are getting that your air is to high lower it and leave it run for a day and see if it stops clinkering. There Ash Fusion Temps on there coal is 2600f or at least it was.You will also notice the ash content is higher then it was more crunchy and a darker red then a light pink Powder like it was.There are In very deep in the mine same vein of coal lykens # 2 but the vein can change along the way you can get more or less ash content sulfer content flyash content fusion temps and so on .