GB/T 31965-2015
Praseodymium-neodymium oxides (English Version)

Standard No.

GB/T 31965-2015

Language

Chinese, Available in English version

Release Date

2015

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 31965-2015

Scope

This standard specifies the requirements, test methods, inspection rules and packaging, marking, transportation, storage and quality certificates of praseodymium and neodymium oxides. This standard applies to praseodymium-neodymium oxides extracted from rare earth ores and NdFeB permanent magnet materials, which are used for electrolytic preparation of praseodymium-neodymium metals and additives such as glass and ceramics.

GB/T 31965-2015 Referenced Document

• GB/T 12690.1 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 1：Determination of carbon and sulfur contents—High frequency-infrared absorption method*， 2022-12-30 Update
• GB/T 12690.10 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides-Determination of phosphorus content by molybdenum blue spectrophotometric method
• GB/T 12690.11 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides-Determination of magnesium content-Flame atomic absorption spectrometric method
• GB/T 12690.12 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides-Determination of thorium content-Arsenazo III spectrophotometric method and inductively coupled plasma mass spectrum method
• GB/T 12690.13 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides-Determination of molybdenum and tungsten content-Inductively coupled plasma atomic emission spectrographic method and inductively coupled plasma mass spectrum me
• GB/T 12690.14 Chemical analysis methods for non-rare earth impurities in rare earth metals and their oxide.Determination of titanium in rare earth metals
• GB/T 12690.15 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides―Part 15: Determination of calcium content*， 2018-07-13 Update
• GB/T 12690.16 Chemical analysis methods of non-rare earth impurities in rare earth metals and the oxides—Part 16:Determination of fluorine content—Ion selective electrode analysis
• GB/T 12690.17 Chemical analysis methods of non-rare earth impurities in rare earth metals and the oxides.Part 17: Determination of niobium and tantalum contents of rare earth metals
• GB/T 12690.18 Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides— Part 18: Determination of zirconium content*， 2017-10-14 Update
• GB/T 12690.19 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 19: Determination of arsenic and mercury contents*， 2018-09-17 Update
• GB/T 12690.2 Chemical analysis methods for nonrare earth impurity of rare earth metals and their oxides—Part 2: Determination of ignition loss content of rare earth oxides—Gravimetric method
• GB/T 12690.24 Rare-earth metals and their oxides--Determination of aluminum content--Aluminum-chromazurol S-hexadecyl-trimethyl ammonium bromide-ethanol spectrophotometric method
• GB/T 12690.27 Rare-earth metals and their oxides--Determination of ignition loss--Gravimetric method
• GB/T 12690.28 Rare earth metals and their oxide-Determination of calcium oxide content-Inductively coupled plasma atomic emission spectrographic method
• GB/T 12690.29 Rare earth metals and their oxide Determination of cerium oxide content-Fluorescent spectrophotometric method
• GB/T 12690.3 Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides.Part 3:Determination of water content of rare earth oxides.Gravimetric method
• GB/T 12690.4 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 4: Determination of oxygen and nitrogen contents—Impulse-infrared absorption and impulse-thermal conductivity method*， 2021-10-11 Update
• GB/T 12690.5 "Chemical analysis methods for nonrare earth impurities of rare earth metals and their oxides—Part 5:Determination of cobalt,manganese,lead,nickel,copper,zinc,aluminum,chromium,magnesium, cadmium,v"
• GB/T 12690.6 Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides—Part 6: Determination of iron content—Kslium thiocyanate, 1,10-Phenanthroline spectrophotometric method*， 2017-10-14 Update
• GB/T 12690.7 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 7: Determination of silicon content*， 2021-10-11 Update
• GB/T 12690.8 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 8: Determination of sodium content*， 2021-10-11 Update
• GB/T 12690.9 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides-Determination of chlorine content-Silver nitrate turbidimetric method
• GB/T 14635 Rare earth metals and their compounds—Determination of total rare earth content*， 2020-11-19 Update
• GB/T 17803 Designation system for rare earth products
• GB/T 26417 Chemical analysis methods of praseodymium-neodymium alloy and the compounds.Determination of REO relative contents
• GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

GB/T 31965-2015 history

• 2015 GB/T 31965-2015 Praseodymium-neodymium oxides