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

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

Publisher: 国家市场监督管理总局、国家标准化管理委员会

Technical Committee: 全国稀土标准化技术委员会(SAC/TC 229)

Pages: 20 pages

Scope

本文件描述了稀土精矿中氧化钙含量的测定方法。本文件适用于稀土精矿中氧化钙含量的测定。本文件共包含3个方法：火焰原子吸收光谱法(方法1)、EDTA滴定法(方法2)、电感耦合等离子体原子发射光谱法(方法3)。方法1测定范围(质量分数)：0.50%~3.00%，方法2测定范围(质量分数)：2.00%~20.00%，方法3测定范围(质量分数)：0.50%~20.00%。当本文件中测定范围0.50%~5.00%出现重叠时，以方法3作为仲裁方法；测定范围>5.00%~20.00%出现重叠时，以方法2作为仲裁方法。

Development Information

Drafting Units:

包头稀土研究院、四川省乐山锐丰冶金有限公司、江西理工大学、四川省冕宁县方兴稀土有限公司、湖南稀土金属材料研究院有限公司、虔东稀土集团股份有限公司、甘肃稀土新材料股份有限公司

Drafting Persons:

常诚、刘晓杰、杨学正、包香春、赵文怡、王丽娟、范小龙、李净岩、于亚辉、胡腾月、刘和连、张燕琴、郑腾飞、苏婷婷、冯亚云、邓强、叶信宇、郑杰、熊志华、张杨琳、杨幼明、廖丕勇、肖静、王贵超、张海燕、温斌、钟群英、罗芝雅、李巧霞、康亚先、江媛、张曼宁、马秀丽

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

GB/T 13840-1992 Abolished

GB/T 13840-1992 Wafer carriers

Publish Date: 1992-12-28

GB/T 15677-1995 Replaced

GB/T 15677-1995 Lanthanum metal

Publish Date: 1995-08-11

GB/T 3136-1995 abolished_transferred

GB/T 3136-1995 Tantalum powders

Publish Date: 1995-10-17

GB/T 3463-1995 Abolished

GB/T 3463-1995 Tantalum wires

Publish Date: 1995-10-17

GB/T 3628-1995 Replaced

GB/T 3628-1995 Tantalum and tantalum alloy foils

Publish Date: 1995-10-17

GB/T 16476-1996 Replaced

GB/T 16476-1996 Scandium metal

Publish Date: 1996-07-09