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Fire Brick Question

 
Posts: 11
Location: Richland Center, WI
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There ae many kinds of fire brick with different densities and chamistries and heat/cold cycle capabilities. Is there a "best" brick that suits the purposes of the fire chamber of a rocket stove mass heater? thanks, Mark.
 
Posts: 100
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a fire brick will transfer the heat qucikly across the brick, preventing it from fracturing. I offer that a good brick for RMH would also be insulative
 
steward
Posts: 2482
Location: FL
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The hotter the fire is and longer it will be in continuous operation will determine what kind of brick you want. Low use, cool fires can get away with a light duty brick having a low alumina content. 30% alumina can do the job. Running it hot for months will need a higher alumina content in the 50% range or higher. The price goes along with the alumina content. You only build it once so I recommend a higher heat and alumina rating. Look for at least a 1500 degree rating.
 
Mark Heffernan
Posts: 11
Location: Richland Center, WI
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Thanks, guys. That answers the question and establishes a good standard.
 
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