Ammonium Metatungstate

Description

Ammonium metatungstate (AMT) is an important intermediate compounds of tungsten hydrometallurgical process, is yellowish white crystals. The solubility is the largest in the tungsten-containing compounds, the solubility is greater than 300g WO3/100ml H2O (in 25 ℃). Acid neutralization is a process for preparing the partial route of ammonium tungstate, can use organic acid (e.g. formic acid, acetic acid, citric acid, lactic acid, etc.), can also use inorganic acid (e.g. acid, nitric acid, etc.). Organic acid is easy to operate, but the price is more expensive, the cost is one major drawback. Inorganic acid, nitric acidis is easy to get and cheap, prepared by nitric acid is simple, so it draws attention of people and get widely industrial applications.

Application

Ammonium metatungstate is an important compound product in tungsten smelting process, referred to as AMT. AMT is 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..

Specification