Thermodynamic analysis of the decomposition of scheelite by oxalic acid

Key Points

• To analyze the thermodynamics involved in the decomposition of scheelite by oxalic acid and its equilibrium species.
• Developed equilibrium diagrams for the Ca–W–Oa–H2O system.
• Conducted analyses of various solution species present during decomposition.
• Employ thermodynamic principles to explain equilibrium states.
• Identified key species formed during the decomposition process.
• Established specific conditions under which decomposition is favored.
• Demonstrated the significance of oxalic acid in scheelite breakdown.