Editing Magnesium (section)

===Carbothermic process===
The [[Carbothermic reaction|carbothermic]] route to magnesium has been recognized as a low energy, yet high productivity path to magnesium extraction. The chemistry is as follows:
[[File:Rotary kiln Johannsen patent US1618204.png|thumb|The rotary kiln is used for calcination]]
{{chem2|C + MgO -> CO + Mg}}

A disadvantage of this method is that slow cooling the vapour can cause the reaction to quickly revert. To prevent this from happening, the magnesium can be dissolved directly in a suitable metal solvent before reversion starts happening. Rapid [[quenching]] of the vapour can also be performed to prevent reversion.<ref>{{Cite journal |last1=Brooks |first1=Geoffrey |last2=Trang |first2=Simon |last3=Witt |first3=Peter |last4=Khan |first4=M. N. H. |last5=Nagle |first5=Michael |date=May 2006 |title=The carbothermic route to magnesium |url=http://dx.doi.org/10.1007/s11837-006-0024-x |journal=JOM |volume=58 |issue=5 |pages=51–55 |doi=10.1007/s11837-006-0024-x |bibcode=2006JOM....58e..51B |s2cid=67763716 |issn=1047-4838}}</ref>