The equipment and materials required for the preparation of ammonium metatungstate can be summarized as follows:
The main equipment required for the preparation of ammonium metatungstate:
Reaction kettle
The main equipment used to carry out the neutralization reaction should be able to resist high temperature and corrosion, and have the function of stirring to ensure a uniform reaction.
Filter
It is used to filter the solution after the reaction to remove insoluble matter and obtain clear ammonium metatungstate solution.
Evaporator
It is used to concentrate the clear solution, increase the content of WO₃, and prepare for the subsequent crystallization.
Crystallizer
During the cooling process of the concentrated solution, ammonium metatungstate will be crystallized and precipitated in this equipment.
Dryer
Such as spray dryer (e.g. model LPG-50), used to dry the crystallized ammonium metatungstate and remove the excess water.
Pulverizer
Used to pulverize the dried ammonium metatungstate to obtain the required particle size.
Materials required for the preparation of Ammonium Metatungstate:
Ammonium paratungstate (APT)
As the main raw material, high purity is required to ensure the quality of the final product.
Nitric acid
Used to convert ammonium paratungstate into ammonium metatungstate, usually using dilute nitric acid, the concentration is controlled at 3% to 5%.
Deionized water
Used for preparing slurry and washing products to ensure the purity of raw materials.
Ammonium citrate (optional)
Used as auxiliary solvent to adjust the viscosity and stability of the slurry.
Precautions required for the preparation of ammonium metatungstate:
Equipment selection
Suitable equipment models and specifications should be selected according to the production scale and process requirements.
Material quality
The purity and quality of raw materials and auxiliary materials have an important influence on the quality of the final product and should be strictly controlled.
Operation process
During the preparation process, temperature, pH value, stirring speed and other parameters should be strictly controlled to ensure the smooth progress of the reaction and the quality of the product.
Safety management
The preparation process involving chemicals should strictly comply with the safety operation regulations to ensure the safety of personnel and equipment.
High-quality ammonium metatungstate products can be prepared through reasonable equipment configuration and material selection, combined with strict process control and safety management.
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
