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Calcium Formate Synthesis Methods
Calcium Formate Calcium Carbonate Method
Calcium Formate Reaction Equation:
CaCO3+2HCOOH=Ca(HCOO)2+CO2↑+H2O
Operation: Add a certain concentration of formic acid to the reaction tank; slowly add solid calcium carbonate while stirring (the reaction proceeds vigorously, releasing a large amount of CO2
and heat). The mass ratio of formic acid to calcium carbonate is 1.1:1.0. When the reaction is nearly complete, add lime milk to adjust the pH to 7–8, keep warm for 1–2 hours, then add a sulfide precipitant to remove heavy metal ions. After filtering, concentrate the filtrate for crystallization, centrifuge, and dry to obtain the product (mother liquor is recycled).