Ceramic – Glass
Raw materials for Glass Manufacturing:
Solvay’s Process:
One of the major achievements of the Solvay process is the high efficiency of the ammonia recycle loop. This loop circulates roughly 500 to 550 kg NH3/t soda ash from which the ammonia loss is less than 0.5 % of this flow rate. The purpose of this important process “distillation” is to recover ammonia from the ammonium chloride containing mother liquors recovered from the bicarbonate filters/centrifuges.
After pre-heating with outlet gas from the distiller, supported by the injection of steam at the bottom of the NH3 stripping column, the mother liquor releases almost all its CO2 content. Addition of alkali normally in the form of milk of lime decomposes NH4Cl into NH3 which is stripped from the solution by injected low pressure steam at the bottom of the distillation column. The outlet solution contains calcium chloride together with all the residual solid materials.
To be Contd…
