Ask and Questions

The chemical formula for ammonium metatungstate is (NH₄)₆H₂W₁₂O₄₀·XH₂0.

A lot of preparation of AMT, the main preparation methods of the principle technique:

1. Ammonium tungstate Solution as raw material, solvent extraction and ion exchange method is first prepared by metatungstate solution, then by Evaporation and crystallization Get ammonium metatungstate.
2. Sodium tungstate By solvent extraction solution as raw material in AMT solution, followed by evaporation and crystallization to obtain ammonium metatungstate.
3.The heating thermal dissociation of APT, which lost its part Ammonium And the water of crystallization, converted to ammonium metatungstate easily soluble in water, then Evaporation and crystallization Get ammonium metatungstate.
4. APT in the water mixing with acid is neutralized to PH3-4 condition. APT Into AMT solution, followed by evaporation and crystallization to obtain ammonium metatungstate.

Ammonium metatungstate is an important compound product in tungsten smelting process, referred to as AMT. AMT very versatile and can be used as catalysts, capacitors, nuclear shielding, flame retardants, corrosion inhibitors raw materials, but also excellent raw materials in the preparation of ultrafine tungsten powder, tungsten heavy alloy powder, phosphotungstic acid, arsenic acid, silicon tungstate.

Ammonium metatungstate aqueous white crystalline powder or yellowish. 300g/100ml. Insoluble in water, this is ammonium metatungstate and ammonium paratungstate obvious difference.

Inform us quantity and destination requried, and then send an email to: sales@chinatungsten.com