The phosphate is added to the Boiler water and PO43 is maintained at 5 ~ 15 mg/L, Under the condition of boiler water boiling and strong alkaline environment (PH: 9~11),
Ca2 + and PO43 - in the boiler water reacts as follows:
10Ca2+ +6PO43-+2OH-→Ca10(PO4)6(OH)2↓
A small amount of magnesium ions and silicate root generate serpentine as follows:
3Mg2++2SiO32-+2OH-+H2O 3MgO·2SiO2·2H2O↓,
The above mentioned two kinds of precipitation are in soft water dregs, which can be discharged continuously.