dolomitic lime

[wet reefer]

While going through the barn today, I came across a bag of "Dolomitic Lime"-calcium carbonate. It is used for garden soil.

It contains 31% calcium, and 12.5% magnesium. The only other info on the bag says "warning-contains hydrated lime" . Is this the same as Kalk? It caught my eye because of the magnesium content.

Would this be safe to use in a kalk reactor? It would be nice to use something that would add calcium and magnesium at the same time. Any thoughts on this?

Thank you.

 

[Boomer]

It is kinda the same thing as Kalk. The take Dolomitic Limestone and heat it up

CaCO3 + MgCO3 [Ca,Mg(CO3)2] + Heat ---> CaO + MgO + 2CO2

It you take this and add it to seawater, like Kalk, you will get massive Ca(OH)2 precip. So, no you should not use it.

 

[wet reefer]

I was thinking of using it to boost Mg and Ca in a kalk reactor. I'm using kalk now to suppliment a calcium reactor. I'm assumming this is like ground dolomite so I was wondering if it may give a boost in Mg also. Would any Mg go into solution in a kalk reactor being fed with RODI water? I'm not very good at chemistry. What does the heat accomplish?

 

[Randy Holmes-Farley]

I agree with Boomer.