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GB/T 18882.4-2024 English PDF

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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
Status: Valid

GB/T 18882.4: Evolution and historical versions

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GB/T 18882.4-2024English199 Add to Cart 3 days [Need to translate] 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 Valid GB/T 18882.4-2024
GB/T 18882.4-2002English199 Add to Cart 2 days [Need to translate] Chemical analysis methods for mixed rare earth oxide of ion-absorbed type RE ore -- Determination of aluminum oxide content -- Atomic emission spectrographic method Obsolete GB/T 18882.4-2002

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Basic data

Standard ID GB/T 18882.4-2024 (GB/T18882.4-2024)
Description (Translated English) 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
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H14
Classification of International Standard 77.120.99
Word Count Estimation 10,122
Date of Issue 2024-11-28
Date of Implementation 2025-06-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

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



---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
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 Ionic rare earth minerals Mixed rare earth oxides Chemical analysis methods Part 4.Determination of ferric oxide content Inductively Coupled Plasma Optical Emission Spectrometry 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 ICS 77.120.99 CCS H 14 National Standard of the People's Republic of China Released on 2024-11-28, implemented on 2025-06-01 State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface ... Ⅲ Introduction ... Ⅳ 1 Scope ... 1 2 Normative references ... 1 3 Terms and Definitions ... 1 4 Principle ... 1 5 Reagents or materials ... 1 6 Instruments and Equipment ... 2 7 samples ... 2 8 Test steps ... 2 8.1 Test Materials 2 8.2 Parallel tests 2 8.3 Blank test ... 3 8.4 Preparation of analytical solution 3 8.5 Preparation of series of standard solutions ... 3 8.6 Drawing and determination of standard curve 3 9 Experimental data processing ... 4 10 Precision ... 4 10.1 Precision raw data and statistics 4 10.2 Repeatability ... 4 10.3 Reproducibility 5

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document is Part 4 of GB/T 18882 "Chemical analysis methods for mixed rare earth oxides in ionic rare earth ores". The following parts have been published. Part 1.Determination of the amounts of fifteen rare earth element oxides; Part 2.Determination of the amount of aluminium oxide; Part 3.Determination of silicon dioxide content; - Part 4.Determination of ferric oxide content - Inductively coupled plasma optical emission spectrometry. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed and coordinated by the National Rare Earth Standardization Technical Committee (SAC/TC 229). This document was drafted by. Fujian Changting Jinlong Rare Earth Co., Ltd., Qiandong Rare Earth Group Co., Ltd., Ganzhou Nonferrous Metallurgy Research Co., Ltd., Guorui Kechuang Rare Earth Functional Materials (Ganzhou) Co., Ltd., Guohe General Testing Evaluation and Certification Co., Ltd., China Northern Rare Earth Tu (Group) High-tech Co., Ltd., Jiangxi University of Science and Technology, Ganzhou Rare Earth Youli Technology Development Co., Ltd. The main drafters of this document are. Wang Jinfeng, Wang Baohua, Huang Rongxing, Fang Xiongzhou, Wen Bin, Zeng Xuehua, Jiang Yuan, Lai Wang, Wang Weisheng, Liu Pengyu, Li Shuping, Liu Helian, Hu Weizhong, Zhang Chunlan, Liu Weizhen, Yang Fuguang, Sun Haoran, Ye Xinyu.

Introduction

Ionic rare earth ore is a unique and advantageous mineral resource in my country. Ionic rare earth resources are rich in medium and heavy rare earth elements and are an indispensable resource in the development of technological industries. The indispensable strategic resources are luminescent materials, high-performance magnetic materials, laser materials, magnetic cooling materials, optical fibers, ceramic materials, magnetic It is an important component of induced-stretching materials. my country has a history of more than 50 years of developing ionic rare earth resources. The production and application of ionic rare earths have been developing rapidly. Rapidly, a relatively complete industrial production system has been formed from mining extraction, smelting to application. GB/T 18882 aims to establish a A complete and feasible set of chemical composition analysis methods suitable for the production and trade needs of ionic rare earth ores and mixed rare earth oxide products Due to the length of the document, usage requirements, scope of application, and technical independence between the various analytical methods, GB/T 18882 "Chemical Analysis Methods for Ionic Rare Earth Ores and Mixed Rare Earth Oxides" is planned to consist of four parts. Part 1.Determination of the composition of fifteen rare earth element oxides. The purpose is to establish X-ray fluorescence spectrometry and inductive coupling A method for determining the amounts of fifteen rare earth element oxides in ionic rare earth ores by ion emission spectrometry. Part 2.Determination of aluminum oxide content. The purpose is to establish an inductively coupled plasma emission spectrometry and titration method for the determination of aluminum oxide content. A method for determining the amount of aluminum oxide in sub-type rare earth ores. Part 3.Determination of silicon dioxide content. The purpose is to establish a spectrophotometric and gravimetric method for the determination of silicon dioxide in ionic rare earth ores. Method for determining the amount of silicon. Part 4.Determination of ferric oxide content - Inductively coupled plasma optical emission spectrometry. A method for determining the content of ferric oxide in ionic rare earth ores by daughter emission spectrometry. The above documents clarify the scope of application, standardize reagents, materials, test equipment and procedures, and are repeatedly tested in many laboratories. The test and verification provide precision data, and establish a rigorous and standardized work foundation for the quality inspection of ionic rare earth ores. As one of the most important raw materials for producing rare earth chloride and rare earth oxide, the quality of ionic rare earth ore affects the quality of rare earth extraction and separation in the back end. Iron is one of the most common impurity elements in ionic rare earth ores. The current national standards for most rare earth products are All have control requirements for iron. Iron impurity elements not only affect the quality of rare earth products, but also restrict the application scope of rare earth products. Add Part 4.This document uses inductively coupled plasma emission spectrometry to establish a standardized, easy-to-operate, and highly accurate detection method. standard. Ionic rare earth minerals Mixed rare earth oxides Chemical analysis methods Part 4.Determination of ferric oxide content Inductively Coupled Plasma Optical Emission Spectroscopy

1 Scope

This document describes the determination of ferric oxide content in ionic rare earth ores, mixed rare earth oxides, rare earth carbonates and rare earth oxalates. method. This document is applicable to the determination of ferric oxide content in ionic rare earth ores and mixed rare earth oxides, and is also applicable to rare earth carbonates, rare earth Determination of ferric oxide content in oxalate. Determination range (mass fraction). 0.010%～1.80%.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies. in this document. GB/T 6379.2 Accuracy (trueness and precision) of measurement methods and results Part 2.Determination of repeatability of standard measurement methods Basic methods of sex and reproducibility GB/T 6682 Specifications and test methods for water used in analytical laboratories GB/T 8170 Rules for rounding off values and expression and determination of limit values JJG 768 Emission Spectrometer

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Principle

The sample was decomposed by hydrochloric acid and hydrofluoric acid. After the perchloric acid smoked out, it was dissolved in hydrochloric acid until clear. The matrix was corrected by the approximate matrix matching method. The influence of the determination is directly excited by an argon plasma light source, and the spectrum is measured to calculate the content of ferric oxide.

5 Reagents or materials

Unless otherwise specified, only analytically pure reagents and grade II water that complies with the laboratory standard GB/T 6682 shall be used in the analysis. Use certified standard solutions. 5.1 Hydrogen peroxide [w (H2O2) ≥ 30%]. 5.2 Hydrofluoric acid (ρ = 1.13 g/mL). 5.3 Perchloric acid (ρ = 1.67 g/mL). 5.4 Nitric acid (ρ=1.42 g/mL).

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