Using Low-Temperature Molten Salt Method to Produce Tungsten Cobalt

Using low-temperature molten salt method to produce tungsten cobalt and the producing processes are as follow:

1. In accordance with the mass ratio of 1.17: 1 obtain LiNO3-Na2WO4 mixed molten salt.
2. The Co and W at quantity relative ratio of 1: 1, respectively formulated into aqueous solubility is 1mol/L and then under vigorous stirring, the solution was slowly dropped into Na2WO4 and CoCl2 solution with stirred 30min so that the two solutions were thoroughly mixed.
3. The mixture was filtered, precipitate and washed, dried at 80 ℃ in the oven to give the precursor of CoWO4.
4. to weighed molten salt and precursor by mass ratio of 6: 1 in the mortar mix evenly put it into alumina clamp pot, the pot will be placed in the electric furnace holding 8h at 210,270,340 ℃.
5. After the synthesis reaction was allowed to cool to room temperature, to obtain a solid product, which was after distillation, washing, filtration and drying to obtain the final powder sample.

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