Producing APT from Heavy Metal Alloy

A process for producing APT from a heavy metal alloy containing tungsten comprising introducing the heavy metal alloy into an electrolytic cell as an anode, said cell comprising an inert cathode and an aqueous electrolyte solution comprising ammonium hydroxide and ammonium nitrate, passing a direct electric current through said cell, said ammonium hydroxide and ammonium nitrate being maintained at a suitable concentration for oxidizing tungsten and forming ammonium paratungstate. After the desired concentration of ammonium paratungstate is reached in the electrolyte solution, the reaction may be stopped and the electrolyte withdrawn. The resulting ammonium paratungstate may be purified by conventional methods known in the art.

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