GB/T 20169-2015 Mixed rare earth oxide of ion-absorpted type rare earth ore

GB/T 20169-2006 Mixed rare earth oxide of ion-absorpted type rare earth ore

GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 12690.2-2002 Chemical analysis methods for non—RE impurity of rare earth metals and their oxides—Determination of ignition loss content of rare earth oxides—Gravimetric method GB/T 12690.2-2015 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 12690.3-2002 Chemical analysis methods for non-RE impurity of rare earth metals and their oxides—Determination of water content of rare earth oxides—Gravimetric method GB/T 12690.3-2015 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 14635-2008 Rare earth metals and their compounds—Determination of total rare earth contents GB/T 14635-2020 Rare earth metals and their compounds—Determination of total rare earth content GB/T 14635.1-1993 Rare earth metals and their compounds—Determination of total rare earth contents—Rare earth oxalate gravimetric method GB/T 14635.2-1993 Rare earth metals and their compounds—Determination of total rare earth contents—EDTA volumetric method GB/T 14635.3-1993 Heavy rare earth metals and their compounds—Determination of total rare earth contents—EDTA volumetric method GB/T 16484.12-1996 Methods for chemical analysis of rare earth chloride and carbonate—Determination of sulphate radicle content GB/T 16484.12-2009 Chemical analysis methods of rare earth chloride and light rare earth carbonate—Part 12:Determination of sulfate radical GB/T 17803-1999 Designation system for rare earth products GB/T 17803-2015 Designation system for rare earth products GB/T 18882.1-2002 Chemical analysis methods for mixed rare earth oxide of ion-absorpted type RE ore—Determination of total rare earth contents—Oxalate gravimetric method GB/T 18882.1-2008 Chemical analysis methods of mixed rare earth oxide of ion-absorpted type RE ore—Determination of fifteen REO relative content GB/T 18882.1-2023 Chemical analysis methods of mixed rare earth oxide of ion-absorption rare earth ore—Part 1:Determination of fifteen rare earth oxides composition GB/T 18882.2-2002 Chemical analysis methods for mixed rare earth oxide of ion-absorpted type RE ore—Determination of fifteen REO relative content—X-ray fluorescence spectrometric method GB/T 18882.2-2008 Chemical analysis methods for mixed rare earth oxide of ion-absorpted type RE ore—Determination of aluminum oxide content GB/T 18882.2-2017 Chemical analysis methods for mixed rare earth oxideof ion-absorpted type rare earth ore—Part 2:Determination of aluminum oxide content