Phosphoric Acid → Zinc Phosphate

HRID 1706352Notes

Reaction equation

HRID 1706352 reaction equation
[O-2].[Zn+2:2].[Mn]([O-])(=O)(=O)=O.[K+].[P:9](=[O:13])([OH:12])([OH:11])[OH:10]>[Zn].O>[P:9]([O-:13])([O-:12])([O-:11])=[O:10].[Zn+2:2].[P:9]([O-:13])([O-:12])([O-:11])=[O:10].[Zn+2:2].[Zn+2:2]

Participants

6

Reactant 3

HCID 1004Phosphoric Acid2×HCID 516875Potassium PermanganateHCID 3007857Zinc Oxide

Product 1

HCID 24519Zinc PhosphateYield 131.8%

Reagents, catalysts & solvents 2

HCID 23994ZincCatalystHCID 962WaterSolvent2×

Procedure

Zinc-containing wastes resulting from the production of sodium hydrosulphite in the amount of 1,019 g containing 960 g of zinc oxide and 10 g of metallic zinc are ground in a ball mill by the wet grinding method in the presence of 1,000 g of water, whereafter an additional 2,000 g of water are added thereto along with 143 g of potassium permanganate. Under continuous stirring, the slurry is heated to a temperature of 80° C. and 965 g of phosphoric acid as calculated for 100% H3PO4 are added thereto. The slurry is subjected to filtration after 35 minutes of the heating, the residue is washed and dried to give 2 kg of zinc phosphate (the yield is equal to 97%).

Workup

  1. additionare added
  2. filtrationThe slurry is subjected to filtration after 35 minutes of the heating
  3. washthe residue is washed
  4. customdried

Sources & evidence

ORD record
ord-35bb765f618d48588afe1c4393784252
Source dataset
uspto-grants-1980_06
Patent number
US04207301

Reaction notes

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