GB/T 18882.3-2019 Active National standards

GB/T 18882.3-2019 Chemical analysis methods for mixed rare earth oxide of ion-adsorption rare earth ore—Part 3:Determination of silicon dioxide content

Publish Date: 2019-08-30 Implement Date: 2020-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 18882.3-2019

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Analysis methods for rare metals and their alloys

ICS Name: Other non-ferrous metals and their alloys

Publish Date: 2019-08-30

Implement Date: 2020-07-01

Pages: 8 pages

Scope

This part of GB/T 18882 specifies the determination method for the silicon dioxide content in mixed rare earth oxides from ionic rare earth ores.
This part is applicable to the determination of silicon dioxide content in mixed rare earth oxides from ionic rare earth ores, and it includes two methods. Method 1 is the spectrophotometry method, and Method 2 is the gravimetric method. The determination range (mass fraction) of Method 1 is 0.10%~2.00%; the determination range (mass fraction) of Method 2 is 1.00%~5.00%. When the determination ranges of the two methods overlap, Method 1 is used as the arbitration method.