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

GB/T 20169-2015 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 12690.3-2002 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 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 GB/T 18882.3-2002 Chemical analysis methods for mixed rare earth oxide of ion-absorpted type RE ore—Determination of fifteen REO relative content—Inductively coupled plasma atomic emission spectrographic method 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 GB/T 18882.4-2002 Chemical analysis methods for mixed rare earth oxide of ion-absorpted type RE ore—Determination of aluminum oxide content—Atomic emission spectrographic method GB/T 18882.5-2002 Chemical analysis methods for mixed rare earth oxide of ion-absorpted type RE ore—Determination of aluminum oxide content—EDTA titrimetric method GB/T 18882.4-2024 Chemical analysis methods of mixed rare earth oxide of ion-absorption rare earth ore—Part 4:Determination of iron trioxide content—Inductively coupled plasma atomic emission spectrometry