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How to prepare high-purity ammonium paratungstate? The researchers proposed a method for preparing high-purity APT. This method improves the quality of ammonium paratungstate and reduces the production cost of high-purity APT. More details, please visit: http://ammonium-paratungstate.com/index.html A Preparation Method of High-purity Ammonium Paratungstate Step One: Put APT into the feed bin and send it into the rotary furnace through the screw feeder at a constant speed. Control the calcination temperature and atmosphere in the rotary furnace. The feed volume is…

One of the applications of ammonium paratungstate is – to prepare submicron spherical tungsten powder. For example, some researchers have prepared submicron spherical W powder using ammonium paratungstate as a raw material through the circulatory oxidization-reduction method. More details, please visit: http://ammonium-paratungstate.com/index.html Ammonium Paratungstate Application – To Prepare Submicron Spherical Tungsten Powder Through Circulatory Oxidization-Reduction Method Violet tungsten oxide was prepared with pure ammonium paratungstate in argon gas. Tungsten powder was obtained from violet tungsten oxide through deoxidation in hydrogen…

Ammonium paratungstate (APT), a white crystalline salt, is well-known as the most important raw material for producing all other tungsten products, so the production methods of APT attract much attention. More details, please visit: http://ammonium-paratungstate.com/index.html Production Methods of Ammonium Paratungstate 1.From tungsten ores. Tungsten ores, which are typically oxides, are digested in base to give solutions of tungstate together with many contaminating species. This crude extract is acidified and treated with sulfide to separate molybdenum trisulfide. Upon further acidification APT…

Ammonium paratungstate application is always the focus as it is an important intermediate for producing different tungsten products. Ammonium paratungstate (APT) is mainly used for the preparation of tungsten trioxide (WO3), blue tungsten oxide (W20O58/WO2.9) or metal tungsten powder. More details, please visit: http://ammonium-paratungstate.com/index.html Ammonium Paratungstate Applications APT can even be used for the production of metal tungsten powder downstream products, such as tungsten wire, tungsten bar and other electric vacuum materials, or alloyed products such as tungsten carbide blades,…

What is ammonium paratungstate? Ammonium paratungstate, APT for short, is white, finely divided crystals, with the chemical formula (NH4)10(W12O41) · 5H2O. It is soluble in water and insoluble in alcohol. It is produced by evaporation of purified ammonium tungstate solution to obtain pure paratungstate crystals. Controls of time, temperature, concentration, and pH, determine the quality and physical characteristics of the APT crystals. More details, please visit: http://ammonium-paratungstate.com/index.html Ammonium paratungstate is used as a source for high-purity tungsten oxides, tungsten metal…

Tungsten alloy radiation shielding is an excellent way to protect doctors, nurses, patients and their family members against radiation. It means that tungsten alloy can shield radiation. You know, there are three main methods of radiation protection. They are time protection, distance protection and shielding protection. Wherein, the main point of shielding protection is to place a shielding material that can effectively absorb radiation between the radiation source and the human body. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html As a traditional…

The researchers used tungsten hexachloride (WCl6) and tributyl phosphate to synthesize a new near infrared absorbent. The obtained near-infrared absorber has the advantages of high visible light transmittance, strong near-infrared absorption, and good stability to light and heat. And the researchers also used the near-infrared absorber as a colorant and methyl methionate as a matrix to prepare a new near-infrared filter plastic product with stable near-infrared absorption performance. More details, please visit: http://tungsten-hexachloride.com/index.html Preparation of A New Near Infrared Absorbent…

Hydrogen reduction is the earliest method for preparing rare metals such as tungsten and molybdenum. And the hydrogen reduction of tungsten hexachloride is the most noticeable method in the preparation of ultrafine tungsten powder at home and abroad. More details, please visit: http://tungsten-hexachloride.com/index.html Some researchers used metal tungsten powder as a raw material to heat the reactor under the condition of passing hydrogen. The temperature of the chlorination section was heated to 800 °C for heat preservation and the reduction…

The researchers proposed a method for preparing high purity tungsten hexachloride, which requires the following steps: raw material pretreatment, tungsten hexachloride preparation, tungsten hexachloride refining, condensation reception and tail gas treatment. More details, please visit: http://tungsten-hexachloride.com/index.html A Preparation Method of High Purity Tungsten Hexachloride Step One: Raw material pretreatment. Screening or sintering to obtain large particle size tungsten powder (> 75um), chlorine gas is preheated while purifying, the temperature rises to 600-1000 °C, screening large particle size activated carbon (>…

What is tungsten hexachloride? Tungsten hexachloride is the chemical compound of tungsten and chlorine with the formula of WCl6. It shows dark blue or blue violet appearance, and exists as a volatile fine powder under standard conditions. More details, please visit: http://tungsten-hexachloride.com/index.html Tungsten hexachloride is a blue-black solid at room temperature. At lower temperatures, it becomes wine-red in color. A red form of the compound can be made by rapidly condensing its vapor, which reverts to the blue-black form on…