Ammonium Paratungstate Impurity Study

The spectrophotometric determination of impurities in the ammonium paratungstate is mainly determined by the reaction temperature, reaction time, NaOH concentration and stirring speed on the active ingredients wolframite tungsten leaching. Also investigate the properties of the resin in the ion exchange process, the exchange of the solution before concentration and flow rate, desorbent concentration, flow rate and temperature and other factors on the impurity removal rate during crystallization temperature.

Ammonium paratungstate is an important raw material which is used as a source for high-purity tungsten oxides, tungsten metal powders, carbides, or as a laboratory reagent. Also tungsten powder including tungsten trioxide, tungsten blue oxide. Those powders are then used to make numerous products including wire, cutting tools, billets, welding electrodes, mining tools and many others. There are alloy series too, such as tungsten carbide alloy blade, alloy drill, alloy molds, etc.; and other wear, pressure, temperature and other machinery and equipment components. Also used in the manufacture ammonium metatungstate and other tungsten compounds as additives for the petrochemical industry. 



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