The equipment used in the neutralization method of producing ammonium metatungstate has the following characteristics:
Equipment type
The neutralization equipment may include a reactor, a stirrer, a pH controller, a heating/cooling system, a filter, etc.
Reactor
The reactor is the main place for the neutralization reaction and is usually made of corrosion-resistant materials such as stainless steel.
The design of the reactor should ensure sufficient stirring effect and uniform temperature distribution.
Agitator
The agitator is a key device to ensure uniform mixing of the reaction liquid.
The stirring speed has an important influence on the effect of the reaction. For example, the stirring speed mentioned in references 1 and 4 is 80 r/min or 700-800 rpm.
pH controller
The pH controller is used to monitor and control the pH value of the reaction liquid in real time to ensure that it is within a predetermined range (such as pH 3-4).
Accurate pH control is essential for obtaining high-quality ammonium metatungstate.
Heating/cooling system
The heating/cooling system is used to control the reaction temperature, usually in the range of 80-95°C.
Appropriate temperature has a positive effect on improving conversion rate and reducing impurities.
Filtering device
The filtering device is used to remove insoluble matter and impurities in the reaction solution to obtain a pure ammonium metatungstate solution.
The selection of the filter should be based on the properties of the solution and the required filtration accuracy.
Equipment durability
Since the neutralization method may involve corrosive substances, the equipment should have good corrosion resistance and durability.
The maintenance and care of the equipment are essential to extend its service life and ensure product quality.
Safety
Since dangerous goods such as nitric acid are involved, the neutralization equipment should have good safety performance, such as explosion-proof and leakage-proof.
Operators should receive professional training to understand the safe operating procedures and emergency treatment measures of the equipment.
In summary, the equipment used in the neutralization method for producing ammonium metatungstate should have the characteristics of corrosion resistance, efficient stirring, precise pH control, adjustable temperature, easy filtration and good safety performance. These characteristics together ensure the smooth progress of the neutralization method and the high-quality production of ammonium metatungstate.
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