Product

Product
High Purity Spherical Tungsten Powder 330

High purity spherical tungsten powder has excellent performance and unique preparation technology. It is a new material used in thermal spraying, porous material and powder metallurgy industry. High purity spherical tungsten powder is used to make porous tungsten components, such as high power pulse microwave tube cathode and electronic barium tungsten cathode, the rockets’ sweating material, catalyst or catalyst carrier, gas distribution plate and gas under the high temperature filtration materials. In powder metallurgy industry, the compaction of high purity…

Product
Superfine Spherical Tungsten Powder 326

Superfine spherical tungsten powder has good fluidity and high density, and is widely used in industrial production. The porous tungsten cathode materials prepared with superfine spherical tungsten powder have more uniform pores and will replace the conventional tungsten powder for the preparation of porous tungsten components. In the field of powder metallurgy, superfine spherical tungsten powder has high density of pine, which is very uniform during sintering process and can achieve good size control. Radio frequency plasma with high temperature…

Product
SCR Denitrification Titanium Tungsten Powder 317

SCR denitration titanium tungsten powder is a kind of ideal catalyst support material, has the characteristics of typical porous structure and high heat stability, is the SCR denitration technology with carrier of catalyst and the key production of raw materials. Selective catalytic reduction (SCR) denitrification technology is the most mature technology in denitrification industry at home and abroad, and the catalyst is the core of SCR denitration technology, which is the key factor of the whole system cost control. As…

Product
Titanium Tungsten Powder for SCR Denitrification Catalyst 319

Titanium tungsten powder for SCR denitrification catalyst has the advantages of small grain size, stable performance, uniform appearance and maximum surface area, and is generally prepared by ammonium metatungstate (AMT). Characteristic Small grain size, small lattice distortion and stable performance; The particle concentration was the lowest, the morphology was uniform, and the tungsten distribution was the most uniform. The larger the surface area than the surface area, the better the activity of the catalyst. Preparation It is prepared by ammonium…

Product
Ammonium Metatungstate 414

Ammonium metatungstate, AMT for short, a kind of white crystallized powder, is mainly applied for petroleum industry. And it can also be used in the manufacture of various petrochemical catalysts and other tungsten compounds. Its molecular formula is (NH4) 6H2W12O40 • XH2O. AMT is usually used as one of the precursors of tungsten carbide (WC) catalyst, and the properties of AMT precursor affect the morphology and size distribution of WC microsphere, which have a finally effect on the catalyst activity.…

Product
Violet Tungsten Oxide 322

Violet tungsten oxide, VTO for short, is powder shaped and violet displayed. VTO is mainly applied for the production of tungsten powder and tungsten carbide powder. It is produced by rotary calcining ammonium paratungstate at closely controlled temperatures in a reducing atmosphere. What is the morphological structure of VTO? VTO’s phase composition is WO2.72 (or W18O49), a different form of tungsten oxide, with unique crystal structure differing from other tungsten oxide’s. Its morphology is significantly different from the other three…

Product
Blue Tungsten Oxide 332

Blue tungsten oxide (BTO), also known as tungsten blue oxide (TBO) or β-tungsten oxide, is a compound of tungsten and oxygen. The measured density of BTO is 7.15g/cm3, the density measured by X-ray is 7.16g/cm3, and the range of homogeneous phase is WO2.8975~2.9014 (1000°C). Its formula is WO3-x. BTO’s composition is very complex, which may also exist WO2, WO3 and ammonium salts. Its most common form is WO2.9. BTO is manufactured by calcination of APT under more or less reducing…

Product
Yellow Tungsten Oxide 416

Yellow tungsten oxide, YTO for short, has a yellow to bright green color. Its formula is WO3. It is used for the production of tungsten metal powder. Products passing 60 mesh screen. It keeps stable in the atmospheric temperature. Its apparent density is 2.3~2.8g/cm3. The crystal size is about 1.5um, it is yellow (made from tungstic acid) and is used as a catalyst. The crystal size is about 15um, showing bright green (made by calcining ammonium paratungstate), for the production…

Product
Pyrochlore-type Tungsten Trioxide 325

Pyrochlore-type tungsten trioxide, also known as pyrochlore-type H2W2O7, can be used for the preparation of tungsten oxide, for laminated composite, for sensors and other fields. Its application to be developed because there is still no way to mass production. Its formula is H2W2O7 or WO3 • 0.5H2O. Production method: 1. Hydrothermal synthesis method. Acidification of sodium tungstate solution to a certain pH range (pH> 3.5, and within the alkaline range), then, hydrothermal reaction to a certain time. 2. Adopt the…

Product
Tungsten Oxydichloride 347

Tungsten oxydichloride, an important compound in the tungsten metallurgy process, is produced by the reaction of metal tungsten, tungsten trioxide and tungsten hexachloride at 450°C or by the reaction of tungsten oxytetrachloride and tin dichloride. Its formula is WOCl2. Physical properties of WOCl2: 1. Golden brown needle crystal, monoclinic structure. 2. Density is 5.92g/cm3. Chemical properties of WOCl2: 1. It is stable in the air. 2. It is easily decomposed by nitric acid (HNO3). 3. Under vacuum, at the temperature…

1 189 190 191 192 193 198