Coarse tungsten carbide has good resilience, high hardness, high thermal conductivity, is widely used as mining tools, punching mould, gasoline exploration and hard face material.

In traditional ammonium paratungstate (APT) producing method, add tungsten into hydrochloride solution to remove impurities. Main impurities in tungsten residue are phosphoric ion, magnesium ion, ferro ion and potassium ion. 

Almonty Industries Inc. (TSXV:AII) announced that it has signed an engineering, procurement and construction (EPC) contract with POSCO E&C for the development works at the Korea-based Sangdong tungsten-moly mine.

Yellow Tungsten oxide is an oxide form of tungsten, appearance is yellow powder. It has two different grain sizes and color. When grain size is 1.5um, it is light yellow. When grain size is 15um, it is yellow green. Although they have different appearance, their property is similar.

In recent years, yellow tungsten oxide catches wide concentration in special application field, especially in gas sensing industry. Nano yellow tungsten oxide, can be used to synthesize exploring sensing system in national defense industry. It can inspect biology, atom nuclear weapons and chemical material, also provide nano virtual training system for computer system. Moreover, it provides many convenient condition for high property communicating system.

On Nov 3, according a report by Australia media, MT (Mulgine Tungsten Mine) in the west of Australia went through environmental examine and approval, it is expected to be explored in 2018. Xiamen Tungsten Cooperation will purchase tungsten concentrate from this company.

Violet tungsten oxide is short for VTO, is named for its violet appearance. It is the common recognized best material for producing ultra fine or nano grade tungsten powder in the industry. Violet tungsten oxide is mainly used to produce tungsten metal powder and tungsten carbide powder, as well as gas sensor testing equipment.

Nano cesium tungstate is new material which is discovered recently. Some painting company in Japan, Germany and America are aimed at developing cesium tungstate transparent heat insulating painting. Nano cesium tungstate is a kind of inorganic nano powder which has good absorption capability toward near infrared.

Cesium tungstate, which chemical formula is Cs2WO4, is colorless crystal, has strong absorption for moisture. It has phase turn around at 536℃ from rhomboidal crystal to hexagonal crystal, soluble in water.

Cesium tungstate has transparent heat insulating property while in near infrared area (wavelength 800~1100nm), and strong penetrating property in visible area (wavelength 380~780nm), strong shielding property in violet light area (wavelength 200~380nm). As a result, nano cesium tungstate has adorable near infrared absorption, visible light transmission property, has wide application prospect in window heat insulating, car membrane, sunlight insulating and so on.

Cesium tungstate producing method including solid phase method, liquid phase co-precipitation method, micro-emulsion method, hydrothermal method, etc.. However, the shortcomings during producing process such as high cost, low producing efficiency results it in high price.

To date, there are few research on nano cesium tungstate producing method national wide, China is in the leading place instead. To be honest, there are many shortcomings while during producing process, it is hard to be applied in a wider field due to its high cost. But with progress made in research and former experience, more preparation methods will come out in the future.

Violet tungsten oxide is short for VTO, is named by its violet appearance. It is a widely recognized best raw material for producing ultra fine or nano tungsten powder in the industry. Violet tungsten oxide is mainly used in producing tungsten metal powder and tungsten carbide powder, as well as gas sensing material.

Tungsten is the main element for producing special steel, widely applied in refine high speed steel instrument, alloy steel, spring steel, heat-resisting steel, stainless steel and magnetic steel. It is widely used in national defense and people’s daily life, and is becoming an indispensable material.