Super coarse tungsten powder is a tungsten powder with a coarse grain size. It is a raw material for preparing tungsten processing materials, tungsten alloys, tungsten-based alloys, tungsten carbides, and other tungsten products. It can be prepared by hydrogen reduction of tungsten trioxide or ammonium paratungstate.
Applications
Super coarse tungsten powder is a raw material for the preparation of tungsten processing materials, tungsten alloys, tungsten-based alloys, tungsten carbides, and other tungsten products. Its application involves mechanical processing, mining, geological drilling, construction tools, light bulb lighting, military engineering and other fields.
Preparation
Super coarse tungsten powder is prepared by hydrogen reduction of tungsten trioxide or ammonium paratungstate. The process of producing tungsten powder by hydrogen reduction method is generally divided into two stages: the first stage is at a temperature of 500~700° C, and the tungsten oxide is reduced to tungsten dioxide; the second stage is at a temperature of 700-900° C, and the oxidation is performed. Tungsten is reduced to tungsten powder. The reduction reaction is often carried out in a tube furnace or a rotary furnace.
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