The production steps of the ammonium metatungstate tungstate method can be clearly divided into the following stages:
Raw material preparation
Prepare the main raw materials tungstic acid and ammonia water, as well as an appropriate amount of deionized water as a solvent.
Dissolution
Add tungstic acid to boiling deionized water and stir until completely dissolved.
Amination reaction
Under stirring, add ammonia water to the tungstic acid solution for amination reaction.
During the amination reaction, the pH value of the solution gradually reaches about 8 by controlling the speed of adding ammonia water and the stirring speed.
Reaction control
During the reaction, the reaction temperature, pH value and stirring speed need to be strictly controlled to ensure the stability of the reaction and the purity of the product. Usually, the reaction temperature needs to be maintained within a certain range to ensure the efficiency of the reaction and the quality of the product.
Cooling and crystallization
After stopping heating, let the solution cool naturally to room temperature.
During the cooling process, ammonium metatungstate will gradually crystallize out.
Filtration and drying
The crystallized ammonium metatungstate is separated from the mother liquor through filtration operation.
The filtered ammonium metatungstate crystals are dried to remove moisture and impurities.
Subsequent processing
Depending on the product use and quality requirements, ammonium metatungstate may need to be further processed and treated, such as recrystallization, grinding, etc.
Quality inspection
The produced ammonium metatungstate is quality inspected, including purity, particle size, moisture and other indicators to ensure that the product meets relevant standards and requirements.
It should be noted that the reaction conditions and operating steps of ammonium metatungstate tungstate method need to be strictly controlled during the production process to ensure the quality and purity of the product. At the same time, due to the use of hazardous chemicals, operators need to strictly abide by safety regulations and operating procedures to ensure production safety.
In addition, other methods can be used to prepare ammonium metatungstate, such as neutralization, thermal decomposition, solvent extraction and ion exchange. These methods have their own characteristics, and the appropriate method can be selected for production according to specific needs and conditions.
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
