Marinepur vs. kiln bricks

[JasonK84]

Aren't kiln bricks ceramic? Would it be the same material as Marinepur but much much cheaper?

Just a thought I had and wondered if anyone knew the answer.

Marinepur block-$50
K-23 fire brick-$5

What is the difference if any?

 

[Big G]

Fire bricks are made with fire clay which is "mineral aggregate composed of hydrous silicates of aluminium (Al2O. 2SiO. 2H2O) with or without free silica." Might not be a good idea combing aluminium and salt water. There's already some issues with alum. leaching from Marinepure products. I would imagine those concerns might increase with fire bricks. Could test by placing a fire brick into a small QT, run it for 30 days or so, and then take a water sample and have it tested for alum and other chemicals that may leach from the brick.

 

[JasonK84]

Fire bricks are made with fire clay which is "mineral aggregate composed of hydrous silicates of aluminium (Al2O. 2SiO. 2H2O) with or without free silica." Might not be a good idea combing aluminium and salt water. There's already some issues with alum. leaching from Marinepure products. I would imagine those concerns might increase with fire bricks. Could test by placing a fire brick into a small QT, run it for 30 days or so, and then take a water sample and have it tested for alum and other chemicals that may leach from the brick.

It would be worth the experiment if someone else hasn't already tried.