Translations:Fertilizer/32/en: Difference between revisions

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Step 2. Removal of Calcium Nitrate. It is important to remove the [[calcium nitrate]] because calcium nitrate is extremely [[Hygroscopy|hygroscopic]]. 
*Method 1.(Odda process) Calcium nitrate crystals are removed by centrifugation. 
*Method 2. Sulfonitric Process Ca(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>SO<sub>4</sub> + 2NH<sub>3</sub> → CaSO<sub>4</sub> + 2NH<sub>4</sub>NO<sub>3</sub>
*Method 3.Phosphonitric Process Ca(NO<sub>3</sub>)<sub>2</sub> + H<sub>3</sub>PO<sub>4</sub> + 2NH<sub>3</sub> → CaHPO<sub>4</sub> + 2NH<sub>4</sub>NO<sub>3</sub>
*Method 4.Carbonitric Process Ca(NO<sub>3</sub>)<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O + 2NH<sub>3</sub> → CaCO<sub>3</sub> + 2NH<sub>4</sub>NO<sub>3</sub>

Step 2. Removal of Calcium Nitrate. It is important to remove the calcium nitrate because calcium nitrate is extremely hygroscopic.

  • Method 1.(Odda process) Calcium nitrate crystals are removed by centrifugation.
  • Method 2. Sulfonitric Process Ca(NO3)2 + H2SO4 + 2NH3 → CaSO4 + 2NH4NO3
  • Method 3.Phosphonitric Process Ca(NO3)2 + H3PO4 + 2NH3 → CaHPO4 + 2NH4NO3
  • Method 4.Carbonitric Process Ca(NO3)2 + CO2 + H2O + 2NH3 → CaCO3 + 2NH4NO3