Ceramic – Glass
Raw materials for Glass Manufacturing:
Solvay’s Process – Brine Purification :
The Brine is one of the most important raw materials in the Solvay’s process. As mentioned plants which are situated near seas can use the sea water as Brine after processing for purification and other plants which are far away from sea should use the common salt mixed in water as Brine again after purification. Purification of Brine is done to remove impurities like calcium and magnesium. Calcium ions are made to react with Sodium Carbonate and are precipitated as calcium carbonate. As Calcium Carbonate is insoluble it can be removed easily. Process can be modified to precipitate certain amount of calcium as gypsum (CaSO4.2H2O) by including sulphates in the process. Similarly Magnesium ions are removed as precipitates of Magnesium hydroxide. To precipitate the Magnesium ions, we should add an alkaline reagent.
To be Contd….
