Project Report on Calcium Chloride Using limestone

Calcium   chloride   is widely distributed in  nature,   but   in small concentration, as a coustituent of saline matter  dissolved in  sea, spring, river and lake, waters. Deposits  of  tachydrite calcium  chloride do not occur in India. Calcium  chloride  is  a compound of  calcium  and  chlorine, widely  used in industry  as an  addition in drinking water,  anti-dust  treatment  of  roads, sports  ground, tennis  courts,  tiding trades,  public  squares, building yard, road stabilization etc. It  can be prepared by the reaction with  Hydrochloric  acid and  lime  stone, saline  water with  lime  stone by  reaction  with hydrated lime  and  chlorine etc. Large  quantities  of calcium chloride are  present  in  the distiller  waste  of  the  ammonia  soda  process  for  soda  and manufacture  for  every  ton of soada ash produced,  one  ton  of calcium  chloride  is  obtained.  The composition  of  the  waste liquor  varics according to the quality of brine and  lime  stone used,  the volume of feed liquor to be distilled per ton of  ash, the  percentage decomposition in the tawers, and the strength  of milk  of  lime  employed. Normally, 10-12  cum  of  waste  liquer containing  85-95 g/litre. of calcium chloride are  obtained  per ton of soda ash. As  per the physical state of calcium  chloride, it  is  white deliquescent  crystals grannules, lumps or  flakes.  Its   chemicla formula  is (a) CaCl2 (anhydrus);  (b)  CaCl2.H2O; (c)   Cacl2.2H2O  (d) CaCl2.6H2O. All forms are soluble in  water and alcohol.