T/GZNFS 001.1-2019
Methods for Chemical Analysis of Tungsten Slag Part 1: Determination of Tungsten Trioxide Content (English Version)

Standard No.

T/GZNFS 001.1-2019

Language

Chinese, Available in English version

Release Date

2019

Published By

Group Standards of the People's Republic of China

Latest

T/GZNFS 001.1-2019

Scope

The sample is melted and decomposed with sodium peroxide, and the melt is leached with water to separate the tungsten from most of the iron, manganese, calcium, copper, bismuth, niobium, tantalum, cobalt and nickel. In the hydrochloric acid medium, use titanium trichloride Reduce tungsten to pentavalent and form a yellow complex with thiocyanate. Measure the absorbance at a wavelength of 400nm with a spectrophotometer.

T/GZNFS 001.1-2019 history

• 2019 T/GZNFS 001.1-2019 Methods for Chemical Analysis of Tungsten Slag Part 1: Determination of Tungsten Trioxide Content