THE CARBONATION PROCESS. 



process not recommended by the best authorities, the interaction of the two 

 scums tending to reintroduce into the juice bodies which it is desired to 

 eliminate. 



In the carbon ation process the quantity of lime used is very considerable 

 and it is essential that labour-saving devices be used in connection with it. A 

 factory of moderate size working up 5000 gallons of juice per hour will use 

 about 500 gallons of milk of lime, equivalent to about 500 Ibs. of dry lime. 

 The milk of lime may be mixed on the basement and elevated to the clarifier 

 loft by a pump or montjus, or the dry lime may itself be elevated by means of 

 a hoist. In either case power is required to drive the lime mixing apparatus. 



FIG. 148. 



This consists of a rectangular or cylindrical tank of suitable capacity, in 

 which is placed centrally a vertical shaft, fitted with a series of horizontal 

 blades. On the top of this shaft is fixed a horizontal bevel wheel gearing 

 with a vertical one which receives its motion by belt gearing from any con- 

 venient shafting, the power required not being sufficient to demand a separate 

 engine ; the liming tanks have similar appliances to ensure a complete mixture 

 of lime and juice. 



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