extraction of Magnesium from dolamite?
Its spelled dolomite. Dolomite is a mineral with the chemical formula CaMg(CO3)2. To extract magnesium, I would dissolve the dolomite in acid. 2H+ + CaMg(CO3)2 -- Ca2+ + Mg2+ + 2CO2(g) + 2H2O(l) And then selectively precipitate the Mg with an anion that produces an insoluble compound of Mg. One choice would be hydroxide ion. As you can see from the Ksp values below Mg(OH)2 is 500,000 times more insoluble than Ca(OH)2. Ca(OH)2 7.9 x 10-6 Mg(OH)2 1.5 x 10-11 Then you can treat the solid Mg(OH)2 with acid to produce Mg2+ ions in water. This method has separated the Mg from the dolomite. You will need to decide on what form you need the Mg to take to decide where to go from here.
