Nano violet tungsten oxide may be applied to produce infrared ultraviolet shielding material. It means the nano grain size violet tungsten oxide is a kind of heat insulating material --- can be used to block infrared rays and ultraviolet rays. Because of its high visible light transmittance and excellent thermal insulation effect, violet tungsten oxide nano powder is gradually being promoted in the construction and automotive fields. Therefore, people are beginning to know this material, including application in other aspects --- the preparation of tungsten powder.
Violet Tungsten Oxide for Preparing Tungsten Powder
Yellow tungsten oxide powder was obtained by calcining in the air with the same batch of ammonium paratungstate (APT). Pre-reduction in different temperatures and hydrogen atmosphere, respectively, blue tungsten oxide and violet tungsten oxide of ammonium tungsten bronze (ATB) were obtained. The tungsten powder was separately prepared by the three kinds of tungsten oxide under the same hydrogen reduction process, and verified in an industrial hydrogen reduction furnace.
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