In tungsten ore flotation inhibitor, organic inhibitor can be divided into macromolecule inhibitor and micromolecule inhibitor. In recent years, organic inhibitor has diverse structure, has good selectivity of minerals, is also environmental friendly. Characteristic of organic inhibitor is concentration, it has special effect for gangue.

Among tungsten ore flotation inhibitor, sodium silicate is the most widely used one. It has wide application field. However, sodium silicate can not always solve the problem, such as when it encounters gangue. So organic inhibitor is needed.

Tungsten and molybdenum are accompanying elements. Since they are similar in property, it is hard to separate them. Scholars have done a lot of research for tungsten and molybdenum separation, there are several methods developed such as extraction method, precipitation method, ion exchange method.

Tungsten and molybdenum are similar elements, they both belong to VIB clan of element periodic table, have similar property. Tungsten and molybdenum separation has always been a difficult issue in tungsten ore metallurgy, and a key process during beneficiation. 

Tungsten and molybdenum are similar elements, they both belong to VIB clan of element periodic table, have similar property. Tungsten and molybdenum separation has always been a difficult issue in tungsten ore metallurgy, and a key process during beneficiation. There are several methods include extraction method, precipitation method and ion exchange method to realize the separation. Here we introduce hyamine extraction method.

Tungsten and molybdenum are similar elements, they both belong to VIB clan of element periodic table, have similar property. Tungsten and molybdenum separation has always been a difficult issue in tungsten ore metallurgy, and a key process during beneficiation. 

Tungsten and molybdenum are similar elements, they both belong to VIB clan of elements periodic table, they have similar property. Tungsten and molybdenum separation has always been a difficult issue in tungsten and molybdenum concentrate metallurgy, and also a key process in beneficiation process.

Calcium tungstate is the main mineral of tungsten scheelite. When calcium tungstate reacts with nitric acid, it has bigger equilibrium constant, concentration constant is 757. It is no worse than hydrochloric acid.

Main mineral in tungsten scheelite is calcium tungstate. When calcium tungstate reacts with hydrochloric acid, it has large equilibrium constant. From the point view of chemical equilibrium, if amount of hydrochloric acid is deficient, reaction can be taken completely.

Sodium hydroxide is the main agent for tungsten ore decomposition process. Tungsten concentrate has high purity, can be easily decomposed, so use NaOH is easy and environmental friendly. So NaOH plays an important role in tungsten ore decomposition process.