This is a method of preparing ammonium paratungstate. This is just a general method for preparing ammonium paratungstate in the prior art.

How to prepare ammonium paratungstate by ion exchange method?

Ammonium paratungstate, APT for short, is an important inorganic salt product with chemical formula (NH4)10(H2W12O42) ·4H2O. There are many ways to prepare APT, including ion exchange method, neutralization method, solvent extraction method, ultrasonic method, two step ion exchange method, evaporation crystallization method, and tungstic acid method, etc. Wherein, ion exchange process is attracted much attention.

The researchers proposed a new two step ion exchange method for the preparation of high purity ammonium paratungstate. This method overcomes the shortcomings of low tungsten adsorption capacity, low concentration of crude sodium tungstate feed liquid, and large dilution of feed liquid in the ion exchange process using strong basic anion exchange resin, while maintaining certain advantages.

The researchers proposed a preparation method of APT (ammonium paratungstate). The method is simple and easy to operate. The yield of APT is high. The obtained APT has high purity. And the energy consumption is extremely low.

Thermal decomposition process of APT is the thermal decomposition process of ammonium paratungstate. The researchers have proposed a detailed and systematic decomposition mechanism of ammonium paratungstate under inert gas on the basis of summarizing previous research results.

It is a new process to obtain tungsten trioxide by microwave heating ammonium paratungstate. The process requires a short calcination time (only 4min, while the traditional method takes about 2h), and the prepared yellow WO3 powder product is of good quality so that it is worth applying in industry.

The researchers proposed a method for preparing tungsten trioxide by using wet ammonium paratungstate as raw material.

Thermal decomposition process of ammonium paratungstate has attracted much attention of researchers as it is an important raw material for preparing tungsten oxide (by calcining APT), and tungsten oxide is an important raw material for preparing tungsten powder by hydrogen reduction, and tungsten powder is an important raw material for preparing tungsten electrode by powder metallurgy.

How to prepare high purity ammonium paratungstate? The researchers proposed an economical method for preparing high purity ammonium paratungstate with high yield and simple process.