LEAD SMELTING 



i 

 STANDARD SOLUTIONS 



The following are in general use in the lead and copper 

 smelters of the West. 



From the KMn0 4 solution above, lec =.005 CaO, the following 

 comparison is deduced : 



100 CaO= 253.3 Ammonium Oxalate. 



100 CaO= 203.3 Oxalic Acid. 



100 Fe.= 700. Ferrous Ammonium Sulphate. 



All of these solutions, except KCN, keep well if kept in dark 

 bottles, well stoppered. 



* The difference between the theoretical and the practical columns is due to impurities in 

 the chemicals and in the water used. 



