What Is Decomposition Method of Ammonium Paratungstate Tungstate – Hydrochloric Acid?

Wolframite and sodium hydroxide are subjected to alkaline hydrolysis, reacted with hydrochloric acid and ammonium chloride solution, filtered and washed to obtain refined ammonium tungstate solution, then hydrochloric acid hydrolyzed to obtain tungstic acid, and then dehydrated, dried and pulverized , that is, the finished product of tungstic acid. Its reaction equation is:

CTIA GROUP LTD®’s tungstic acid production of ammonium paratungstate-hydrochloric acid decomposition reaction equation is as follows:

MnWO₄·FeWO₄+ 4NaOH → 2Na₂WO₄+ Fe(OH)₂·Mn(OH)₂

12Na₂WO₄+ 14HCl → 5Na₂O·12WO₃+ 14NaCl + 7H₂O

5Na₂O·12WO₃+ 10NH₄Cl → 5(NH₄)₂O·12WO₃+ 10NaCI

5(NH₄)₂O·12WO₃+ 10HCI + 7H₂O → 12H₂WO₄ + 10NH₄Cl

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