99.5% tungsten trioxide can be prepared by complex salt method. Why adopt complex salt method for the preparation of 99.5% WO3?
Complex salt method to produce tungsten trioxide powder has the following advantages:
1. Low production costs, significant economic benefits.
2. For producing many types of tungsten trioxide powder, including coarse tungsten trioxide powder, medium tungsten trioxide powder, fine tungsten trioxide powder and ultrafine tungsten trioxide powder.
3. There is no special selectivity to tungsten ore so that it is suitable for all kinds of wolframite.
4. To produce WO3 products with high chemical indicators. The main quality indicators (%) are shown as follows:
The content of W is equal or greater than 99.50~99.95; Pb is less than or equal to 0.001-10005; Fe is less than or equal to 0.001; Al is less than or equal to 0.001; Si is less than or equal to 0.002; (Ca + Mg) is less than or equal to 0.015; (K + Na) is less than or equal to 0.015; Mo is less than or equal to 0.005; Helium residue is less than or equal to 0.05.
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