The production process of ammonium paratungstate is usually divided into the following steps:
- Raw material preparation: prepare industrial grade tungstic acid, ammonium salt and other raw materials.
- Pretreatment: Mix tungstic acid and ammonium salt in a certain proportion, and then add appropriate amount of water and acid for pretreatment to dissolve and react.
- Precipitation: add an appropriate amount of acetic acid to the pretreated solution to gradually precipitate the ammonium tungstate in the solution.
- Filtration: filter the sediment to remove impurities and unreacted substances.
- Washing: wash the precipitate repeatedly with water or acetic acid to remove impurities and unreacted substances.
- Drying: dry the washed precipitate in an oven to obtain solid ammonium paratungstate product.
- Packaging: package the dried ammonium paratungstate products, usually in plastic bags or barrels.
Special attention should be paid to strictly control the process parameters of each step in the production process, such as reaction time, temperature, PH value, etc., to ensure the quality and purity of the product. In addition, attention should also be paid to safety protection during production, such as wearing protective clothing, gloves, goggles, etc., to prevent accidents.
