Trona method
The Trona process is used to produce pure sodium carbonate (soda) from the carbonate - mineral Trona .
In this process, the mining trona is crushed and freed of accompanying substances by dissolving it in hot water. After evaporation in vacuum to obtain a mono- hydrate of the composition Na 2 CO 3 · H 2 O, the sodium carbonate to calcined (calcined) is.