[Know Tungsten] Tungsten and Molybdenum Separation – Molybdenum Trisulfide Precipitation Method

molybdenum trisulfide image

Molybdenum trisulfide precipitation method uses the affinity of molybdenum in solution which is bigger than tungsten, the principle is disparity of affinity toward sulfide between tungsten and molybdenum.

Read more...

[Know Tungsten] Tungsten and Molybdenum Separation – Hyamine Extraction Method

 hyamine extraction method image

Hyamine is a strong complexting agent, it has different complexting ability for tungsten and molybdenum. Using this difference can realize tungsten and molybdenum separation. 

Read more...

[Know Tungsten] Tungsten and Molybdenum Separation - Activated Carbon Adsorption Method

activated carbon image

There are several methods include extraction method, precipitation method and ion exchange method to realize the separation. Activated carbon adsorption method is a special method.

Read more...

[Know Tungsten] Tungsten and Molybdenum Separation – Selective Precipitation

Tungsten and molybdenum separation – selective precipitation image

Tungsten and molybdenum separation has always been a difficult issue in tungsten and molybdenum concentrate metallurgy, and also a key process in beneficiation process.

Read more...

[Know Tungsten] Tungsten in Electronic and Electrical Industries

tungsten radiation shields picture

Tungsten-base materials are widely used in electronic and electrical industries. Tungsten not only can be used for producing high temperature furnace parts and X-ray tubes for medical use, but also one of the most important components in modern integrated circuitry.

Read more...

[Know Tungsten] The Use of Tungsten Raw Materials in Life

tungsten used in the life picture

Smart Windows

Vapour deposited tungsten oxide layers are functional in self-darkening window panes. Tungsten trioxide is yellow-white and fully transparent in the form of a thin layer. Light converts WO3 to dark blue W20O58 in a reversible reaction, so the light transmission through the pane is reduced in bright sunshine, and the light transmission returns with clouds or at sunset.

Read more...

[Know Tungsten] Tungsten Compounds Used As Raw Materials to Manufacture Chemical Products

tungstic acid picture

Tungsten compounds such as sodium tungstate, ammonium tungstates, tungsten oxides or tungstic acid are commonly used as raw materials to manufacture chemical products. The following list gives a few examples.

Read more...

[Know Tungsten] Chemical Applications of Tungsten in the Form of Catalysts

tungsten in form of catalysts picture

In chemical processes, catalysts are used to modify the mechanisms of chemical reactions. By providing an energetically favorable pathway, catalysts accelerate reactions which would normally be too slow or would not even take place.  After the reaction, the catalyst remains essentially unchanged.

Read more...

[Know Tungsten] Tungsten Concentrate Decomposition Method – Nitric Acid

tungsten concentrate decomposition method - nitric acid image

Calcium tungstate reacts with nitric acid chemical formula:

CaWO4(S)+HNO3=H2WO+Ca(NO3)2

Read more...

[Know Tungsten] Tungsten Ore Decomposition Method – Hydrochloric Acid

HCL decomposition method image

Hydrochloric acid is the main method to process tungsten scheelite, chemical formula of reaction between calcium tungstate and hydrochloric acid:

CaWO4+2HCI=H2WO+CaCL2

Read more...

 

WeChat