Products Description
Vanadium Pentoxide Flake is gray-black. Vanadium pentoxide is widely used in industries such as metallurgy and chemical industry, mainly for smelting vanadium iron. As an alloy additive, it accounts for more than 80% of the total consumption of vanadium pentoxide, followed by being used as a catalyst in organic chemical industry, accounting for about 10% of the total. In addition, it is used as an inorganic chemical, chemical reagent, enamel, and magnetic material, accounting for about 10% of the total.
The product of acid ammonium salt precipitation of vanadium, ammonium polyvanadate, contains a large amount of ammonium sulfate. During the filtration process, it needs to be washed with a 1% concentration of ammonia or ammonium sulfate aqueous solution. After washing, the resulting "yellow plate" contains 20% to 60% moisture, and its moisture content depends on the type of filter. At present, most filters in our country use external filter vacuum filters, and the "yellow plate" contains high moisture. By using a high-pressure box filter, the moisture content in the "yellow plate" can be controlled at around 20%. The transition from yellow cake to flaky vanadium pentoxide involves three steps: dehydration, deamination, and melting.
used of Products
The main raw material of vanadium pentoxide is vanadium ore, the common ones are vanadium titanium magnetite, vanadium iron ore, etc.
First, the raw materials need to be crushed, grinded and other treatments to make them meet certain particle size requirements. The ore is then leached, and an acidic solution is used to dissolve the vanadium from the ore to obtain a vanadium-containing solution.
The second step is the isolation and purification of vanadium. The vanadium-containing solution is subjected to filtration, precipitation and other treatments to remove impurities and insoluble matter.
The vanadium is then separated from the solution through oxidation, reduction and other reactions. Finally, residual impurities are removed through further purification processes, such as solvent extraction, ion exchange, etc., and higher purity vanadium pentoxide is obtained. The third step is the preparation of vanadium pentoxide flakes. The purified vanadium pentoxide is ground and screened to obtain the required particle size. The particles are then pressed to form flake-like vanadium pentoxide. The vanadium flakes are dried and calcined to achieve the required physical and chemical properties.
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