Ammonium metatungstate solvent extraction mainly includes the following steps:
Mixing and extraction
Mix the ammonium tungstate solution with an organic extractant (such as di(2-ethylhexyl) phosphate (D2EHPA) or tributyl phosphate (TBP)) and kerosene solvent to form an organic phase.
Extract the ammonium ions in the ammonium tungstate to reduce the pH value of the solution to 2-4. This process is usually carried out in a specific device (such as a mixing tank or extractor) to ensure sufficient mixing and contact.
Digestion
The extracted solution is digested to generate an ammonium metatungstate solution. This process usually needs to be carried out under certain temperature and time control to ensure that the ammonium ions and tungstate ions react fully.
Concentration and crystallization
The generated ammonium metatungstate solution is concentrated to increase the solute concentration therein, thereby promoting the precipitation of ammonium metatungstate.
Then a crystallization operation is performed to precipitate the ammonium metatungstate in the form of crystals.
Filtration separation
Use filtering equipment (such as filter press or vacuum filter) to separate ammonium metatungstate crystals from mother liquor.
Drying
The separated ammonium metatungstate crystals are dried to remove water and residual solvent. Drying is usually carried out in a dryer or oven to ensure that the obtained product meets the quality standards.
Product testing and packaging
The obtained ammonium metatungstate product is quality tested to ensure that it meets the relevant standards and requirements.
The qualified products are packaged and stored for subsequent use or sale.
In addition, according to the specific production conditions and needs, the ammonium metatungstate solvent extraction method may also include some auxiliary steps, such as solvent recovery and recycling, wastewater treatment, etc. The implementation of these steps can further improve production efficiency, reduce production costs and reduce environmental pollution.
In general, the ammonium metatungstate solvent extraction method is a complex but efficient preparation process, and high-quality ammonium metatungstate products can be obtained through precise control and operation.
More details of ammonium metatungstate product, please visit website: http://ammonium-metatungstate.com/
Please contact CHINATUNGSTEN for inquiry and order of ammonium metatungstate:
Email: sales@chinatungsten.com
Tel.: 86 592 5129595
