GB/T 18114.3-2025 Active National standards

GB/T 18114.3-2025 Chemical analysis methods for rare earth concentrates—Part 3:Determination of calcium oxide content

GB/T 18114.3-2025 Chemical analysis methods for rare earth concentrates—Part 3:Determination of calcium oxide content

Publish Date: 2025-08-01 Implement Date: 2026-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 18114.3-2025

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: 2025-08-01

Implement Date: 2026-02-01

Pages: 20 pages

Scope

This document describes the method for determining the calcium oxide content in rare earth concentrates. This document is applicable to the determination of calcium oxide content in rare earth concentrates. This document includes three methods: flame atomic absorption spectrometry (Method 1), EDTA titration (Method 2), and inductively coupled plasma atomic emission spectrometry (Method 3). The determination range (mass fraction) of Method 1 is 0.50%~3.00%, the determination range (mass fraction) of Method 2 is 2.00%~20.00%, and the determination range (mass fraction) of Method 3 is 0.50%~20.00%. When the determination range in this document overlaps between 0.50% and 5.00%, Method 3 shall be used as the arbitration method; when the determination range exceeds 5.00% and 20.00%, Method 2 shall be used as the arbitration method.

Development Information

Word Count: 27 Thousand words Pages: 20 pages

Same series standard

GB/T 18114.8-2025 Chemical analysis methods for rare earth concentrates—Part 8:Determination of rare earth oxide contents and distribution GB/T 18114.9-2025 Chemical analysis methods for rare earth concentrates—Part 9:Determination of phosphorus pentoxide content GB/T 18114.11-2025 Chemical analysis methods for rare earth concentrates—Part 11:Determination of fluorine content

Replace the following standards

GB/T 18114.3-2010 Chemical analysis methods of rare earth concentrates—Part 3:Determination of calcium oxide content

Referenced Standards

GB/T 601-2002 Chemical reagent Preparations of standard volumetric solutions GB/T 601-2016 Chemical reagent—Preparations of reference titration solutions GB/T 6379.2-2004 Accuracy(trueness and precision)of measurement methods and results—Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods 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 JJG 694-2009 Atomic Absorption Spectrophotometers JJG 694-1990 Verification Regulation for Atomic Absorption Spectrophotometer JJG 694-2025 Verification Regulation of Atomic Absorption Spectrophotometers JJG 768-2005 Emission Spectrometer

Related Standards

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