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GB/T 6730.88-2024: Iron ores - Determination of chlorine content - X-ray fluorescence spectrometric method
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Iron ores - Determination of chlorine content - X-ray fluorescence spectrometric method
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GB/T 6730.88-2024
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Basic data | Standard ID | GB/T 6730.88-2024 (GB/T6730.88-2024) | | Description (Translated English) | Iron ores - Determination of chlorine content - X-ray fluorescence spectrometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D31 | | Classification of International Standard | 73.060.10 | | Word Count Estimation | 26,250 | | Date of Issue | 2024-06-29 | | Date of Implementation | 2025-01-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 6730.88-2024: Iron ores - Determination of chlorine content - X-ray fluorescence spectrometric method
---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.
ICS 73.060.10
CCSD31
National Standards of People's Republic of China
Determination of chlorine content in iron ore
X-ray fluorescence spectrometry
Released on 2024-06-29
2025-01-01 Implementation
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 and Materials 2
6 Instruments and Equipment 2
7 Take sample 3
8 Test Step 4
9 Result calculation 7
10 Result Processing 8
11 Test Report 10
Appendix A (informative) Components of GB/T 6730 11
Appendix B (Informative) Preparation of Flux A 14
Appendix C (Informative) Preparation of Flux B 15
Appendix D (Informative) Precision Test Raw Data 16
Appendix E (Normative) Sample Analysis Result Acceptance Procedure Flowchart 18
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 88 of GB/T 6730 "Iron Ore". The published parts of GB/T 6730 are shown in Appendix A.
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 by the China Iron and Steel Association.
This document is under the jurisdiction of the National Iron Ore and Direct Reduced Iron Standardization Technical Committee (SAC/TC317).
This document was drafted by. Qingdao Bozheng Inspection Technology Co., Ltd., Qingdao Yuancheng Zongheng Technology Co., Ltd., Qingdao Dehong Jinxin Technology Co., Ltd.
Ltd., Qingdao Customs Technology Center, Hebei Product Quality Supervision and Inspection Institute, Qingdao University of Technology, Metallurgical Industry Information Standards Research Institute
Research Institute.
The main drafters of this document are. Ding Shibing, Ma Li, Che Lizhi, Guan Song, Zhao Jingjing, Zhang Ning, Fan Yu, Feng Lili, Song Fei, Wu Yajun, Li Fei,
Zhang Qingjian, Wang Jing, and Liu Jinfeng.
Introduction
Iron ore is the main raw material for the steel industry. In the standard system of the steel industry, the standard system for determination of chemical composition of iron ore is one of the most important standards.
It is a very important part of the production process and plays an important role in ensuring the quality of iron ore products. This series of methods and standards serve the production of iron ore.
production, trade and application, providing technical support for the high-quality development of my country's steel industry.
GB/T 6730 includes a series of standards for the determination of chemical composition of iron ore, which respectively stipulates the content of moisture, total iron, metal
Iron, ferrous iron, silicon, aluminum, calcium, magnesium, sulfur, phosphorus, manganese, titanium, total rare earth, barium, chromium, vanadium, tin, copper, cobalt, nickel, zinc, niobium, bismuth, potassium, sodium, carbon, lead, arsenic,
Determination methods for chemical components such as cadmium, mercury, fluorine, chlorine, loss on ignition and combined water.
In 1986, GB/T 6730 first issued 51 national standards for the determination of chemical composition of iron ore.
Based on the development of technology and actual production needs, after years of continuous formulation and revision, a relatively complete standard system has been formed.
The parts of GB/T 6730 to be published are shown in Appendix A.
Determination of chlorine content in iron ore
X-ray fluorescence spectrometry
Warning---People who use this document should have practical experience in formal laboratory work. This document does not address all possible safety issues.
The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated in relevant national laws and regulations.
1 Scope
This document specifies a method for the determination of chlorine in iron ores by wavelength dispersive X-ray fluorescence spectrometry.
This document is applicable to the determination of chlorine content in natural iron ore, iron concentrate, sintered ore and pelletized ore. The determination range (mass fraction). 0.010%~
1.20%.
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 to
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 6730.1 Preparation of pre-dried samples for iron ore analysis
GB/T 8170 Rules for rounding off values and expression and determination of limit values
GB/T 10322.1 Iron ore sampling and sample preparation methods
GB/T 12806 Laboratory glassware single-line volumetric flasks
GB/T 12808 Laboratory glassware single-line pipettes
GB/T 16597 General rules for analysis of metallurgical products by X-ray fluorescence spectrometry
GB/T 20565 Terminology of iron ore and direct reduced iron
JJF1343 Determination of the value, uniformity and stability of reference materials
JJG810 Wavelength Dispersive X-ray Fluorescence Spectrometer
3 Terms and definitions
The terms and definitions specified in GB/T 20565 apply to this document.
4 Principle
The sample was prepared into a borate melt sample, and the X-ray fluorescence intensity of the chlorine element was measured. The chlorine element peak position ± 0.5° was used as the background measurement.
The calibration samples were prepared using high-purity reference materials, and the peak-to-background ratio of the calibration blank was calculated using the molten sample of pure Fe2O3.
He melted the calibration background intensity of the calibration piece and subtracted it to obtain the net intensity of the chlorine element. The linear relationship between the concentration of the calibration sample and the net intensity was used to calculate
The same method is used to obtain the net intensity of the test sample and the reagent blank sample. After deducting the net intensity of the reagent blank, the calibration coefficient is calculated.
Calculate the chlorine concentration in the sample.
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