Blue Tungsten Oxide Preparation

blue tungsten oxide picture
blue tungsten reduction furnace image Inquiry & Feedback

Blue tungsten oxide preparation contains two methods: wet separation and fire separation. The raw materials are ammonium paratungstate, tungsten trioxide and sodium tungstate.

Fire method is a general method for industry. In general, ammonium paratungstate (APT) is the raw material, which is prepared by the thermal decomposition or the hydrogen reduction. Blue tungsten oxide can be obtained by the mild hydrogen reduction of WO3, but the quality is not as good as that of blue tungsten oxide prepared by using APT as raw material.

Wet method is newly developed in recent years. The ammonium hydroxide solution can product 3.5 (NH4) 2O•5WO2•13WO3•4.5H2O blue tungsten oxide. The reduction of blue tungsten oxide from tungsten solvent extraction organic phase can be prepared by hydrogen O:W=2.82.

The production equipment of blue tungsten oxide is as follows :

blue tungsten oxide preparation device

Related Products:

APT

Ammonium Paratungstate

Ammonium paratungstate (APT) is an important intermediate compounds of tungsten hydrometallurgical process, appearance is white crystalline powder, insoluble in water, soluble in alcohol and ether.
ammonium metatungstate

Ammonium Metatungstate

Ammonium metatungstate(AMT) is an important intermediate compounds of tungsten hydrometallurgical process, appearance is white crystalline powder, solubility in water is the largest in the tungsten compounds which over 300g WO3/100ml H2O (in 25℃).
sodium tungstate

Sodium Tungstate

Sodium tungstate, a tungstate of sodium, is useful as a source of tungsten. It is prepared from tungsten ores used to manufacture tungsten by reducing it.
tungstic acid

Tungstic Acid

Tungstic acid refers to hydrated forms of tungsten trioxide, WO3. The simplest form, the monohydrate, is WO3.H2O, the dihydrate WO3.2H2O is also known. The solid state structure of WO3. H2O consists of layers of octahedrally coordinated WO5(H2O) units where 4 vertices are shared.
yellow tungsten oxide

Yellow Tungsten Oxide

Yellow tungsten oxide is a finely divided, yellow crystalline powder. It is produced by roasting ammonium paratungstate at closely controlled temperatures to drive off water and ammonia. Exact time and temperature control determine, to a large extent, the physical characteristics of yellow tungsten oxide.
cesium tungstate bronze

Cesium Tungsten Bronze

Cesium tungsten bronze is inorganic nano material with good property in absorbing near-infrared with uniform grain size and dispersibility, it has strong absorbing function in near-infrared area with wave length 800~1200nm, also has high transmittance in visible light area with wave length 380~780nm.