Sticky Hopper?

A Coal stoker furnace or stove controls most operations including automatically feeding the coal. They are quite similar to any conventional oil and gas units and easily operated for extended periods of time. They commonly use rice coal but may use larger sizes like buckwheat. They can be used as primary heat, supplementary heat or have a dual set up with your existing oil/gas furnace.
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Cold_Mainer
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Posts: 143
Joined: Sat. Jun. 28, 2008 2:32 pm
Hot Air Coal Stoker Furnace: Pocono BV 90,000 BTU
Coal Size/Type: Rice
Location: Central Maine

Post Sun. Jun. 29, 2008 10:46 am

Being new on the block to coal burning I talked to a guy the other day about his coal stove operation and if he was pleased with it overall. He told me he was and that he has only had one problem that occured 2 times during the winter. He said that on these 2 occasions that coal had stuck to the side of the hopper and formed a plug therefore no coal feeding to the auger feed mechanisim. He said he pounded the side of the hopper loosening the coal but that it rushed down the feeder onto the fire and put the coal fire out.

Does this happen on occasions and if so is there something that can be put on the inside of the hopper to prevent this?


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Richard S.
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Posts: 12712
Joined: Fri. Oct. 01, 2004 8:35 pm
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite
Location: NEPA

Post Sun. Jun. 29, 2008 11:21 am

As the coal is feeding the fines will gravitate to the bottom and the sides. This provides a better platform for it to have steeper angle. If you run it down occasionally and move the coal from the side over it shouldn't happen. Some people have modified the hoppers so there is no dead space and all the coal goes right on.

Basically anything at 45 degree angle from the feed hole is dead space on one side and coal that will feed on the other. If you put an angle in like that the fines wont have a chance to accumulate.
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