Chemical analysis method for measuring molybdenum content in high-tungsten molybdenum recycled materials

Abstract

The invention discloses a chemical analysis method for measuring molybdenum content in high-tungsten molybdenum recycled materials. According to the different properties of the high-tungsten molybdenum recycled materials, different pre-treatment methods are used with a total differential spectrophotometric method and visible spectrophotometry to eliminate interference of tungsten to detection andcorrect the molybdenum content of residues generated during the process so as to obtain accurate results. The chemical analysis method includes the steps of preparing a reagent; measuring molybdenum in molybdenic acid and sodium molybdate; measuring molybdenum in commercial molybdenum oxides; correcting the detection of molybdenum in the residues; determining the detection results. The chemical analysis method performs pre-treatment on the high-tungsten molybdenum recycled materials different in property, effectively eliminates the interference of tungsten to the detection via the total differential spectrophotometric method and corrects the molybdenum in the residues via the visible spectrophotometry; the chemical analysis method has the advantages of good result accuracy, high precisionand good applicability.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, in particular to a chemical analysis method for determining molybdenum content in high tungsten and molybdenum recycled materials. Background technique [0002] Tungsten and molybdenum are important strategic resources of the country, and their products play an important role in industrial production and national defense technology. The hydrometallurgy of tungsten and molybdenum is at the front end of the tungsten and molybdenum industry chain, and its raw materials are mostly molybdenum concentrate and molybdenum calcined sand. In recent years, due to factors such as the state's control over mine resources and the global market, the profits of tungsten and molybdenum hydrometallurgy using molybdenum concentrate and molybdenum calcined sand as raw materials have become very small or even loss-making. As a result, companies have to find other sources of raw materials. In the industrial ...

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Problems solved by technology

[0005] Purpose of the invention: To overcome the defects that the current domestic detection of total molybdenum cannot well eliminate the interference of tungsten, resulting in high detection results, large errors, and inapplicability to the detection of total molybdenum in high tungsten and molybdenum recycled materials, and to design a high-tungsten-molybdenum Chemical Analysis Method for Determination of Molybdenum Content in Recycled Materials

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