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GB/T 3654.10-2024: Ferroniobium - Determination of aluminum content - EDTA titrimetric method
Status: Valid GB/T 3654.10: Evolution and historical versions
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| GB/T 3654.10-2024 | English | 279 |
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Ferroniobium - Determination of aluminum content - EDTA titrimetric method
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GB/T 3654.10-2024
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| GB/T 3654.10-1983 | English | 159 |
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Methods for chemical analysis of ferroniobium. The EDTA volumetric method for the determination of aluminum content
| Obsolete |
GB/T 3654.10-1983
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Basic data | Standard ID | GB/T 3654.10-2024 (GB/T3654.10-2024) | | Description (Translated English) | Ferroniobium - Determination of aluminum content - EDTA titrimetric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H11 | | Classification of International Standard | 77.100 | | Word Count Estimation | 14,195 | | Date of Issue | 2024-05-28 | | Date of Implementation | 2024-12-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 3654.10-2024: Ferroniobium - Determination of aluminum content - EDTA titrimetric 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 77:100
CCSH11
National Standards of People's Republic of China
Replaces GB/T 3654:10-1983
Determination of niobium iron and aluminum content-EDTA titration method
Released on 2024-05-28
2024-12-01 implementation
State Administration for Market Regulation
The National Standardization Administration issued
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 10 of GB/T 3654: GB/T 3654 has been published in the following parts:
--- Chemical analysis method of ferroniobium - Determination of niobium and tantalum content by paper chromatography-mass spectrometry (GB/T 3654:1);
--- Determination of niobium iron and copper content-New cuprous acid-chloroform extraction spectrophotometric method (GB/T 3654:2);
--- Gravimetric method for determination of ferroniobium and silicon content (GB/T 3654:3);
--- Chemical analysis methods for ferroniobium - Combustion gravimetric method for determination of carbon content (GB/T 3654:4);
--- Chemical analysis method of ferroniobium - Molybdenum blue photometric method for determination of phosphorus content (GB/T 3654:5);
--- Determination of sulfur content in ferroniobium by combustion iodine titration, methylene blue photometry and infrared absorption method (GB/T 3654:6);
--- Determination of niobium iron and titanium content by chromotropic acid photometric method and diantipyryl methane photometric method (GB/T 3654:8);
--- Chemical analysis method of ferroniobium - Determination of tungsten content by thiocyanate photometry (GB/T 3654:9);
--- Determination of niobium iron and aluminum content: EDTA titration method (GB/T 3654:10):
This document replaces GB/T 3654:10-1983 "Chemical analysis method of niobium iron - EDTA volumetric method for determination of aluminum content" and is consistent with GB/T 3654:10-
Compared with 1983, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
a) Change the measurement range to "1:00%~9:00%" (see Chapter 1, measurement range of the 1983 edition);
b) Replace ammonium hydroxide with aqueous ammonia (see 5:10, 5:11, 2:10, 2:11 of the 1983 edition);
c) Added instruments and equipment (see Chapter 6);
d) Sampling and sample preparation have been added (see Chapter 7);
e) The sample size has been changed (see 8:1, 3:1 of the 1983 edition);
f) Increased the number of measurements (see 8:2);
g) Added the presentation of analysis results (see 9:2);
h) Repeatability limit and reproducibility limit are used instead of tolerance (see Chapter 10, Chapter 5 of the 1983 edition);
i) Added the content of test report (see Chapter 11):
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 Technical Committee for Standardization of Pig Iron and Ferroalloys (SAC/TC318):
This document was drafted by: Shougang Jingtang United Iron and Steel Co:, Ltd:, Shandong Metallurgical Science Research Institute Co:, Ltd:, Xixia County Hengji
Metallurgical Co:, Ltd:, Qingdao Yuancheng Chuangzhi Technology Co:, Ltd:, Hebei Jinxi International Trade Co:, Ltd:, Jitie Ferroalloy Co:, Ltd:,
Gold Industry Information Standards Research Institute:
The main drafters of this document are: Chen Xinjuan, Xia Zhenhua, Zhang Li, Gao Hongji, Yang Yan, Wu Lijuan, Li Jing, Meng Lili, Cui Xiaocui, Ding Xiaotong,
Tao Zhi, Nie Hongmei, Wei Jinglin, Liu Bing, Ye Xiaoshuang, Wang Jing, Lu Chunsheng, and Liu Yanting:
This document was first published in 1983 and this is the first revision:
Introduction
Since there are many detection elements involved in the ferroniobium detection process, the applicable scope and application methods of the elements are different:
The convenience and accuracy of ferro-niobium detection standards: We have established a national standard system to support ferro-niobium detection for the analysis methods of different elements in ferro-niobium:
GB/T 3654 ferroniobium series analysis methods are the basic standards for ferroniobium detection in my country, and are intended to consist of the following 9 parts:
--- Chemical analysis method of ferroniobium - Determination of niobium and tantalum content by paper chromatography-mass spectrometry (GB/T 3654:1);
--- Determination of niobium iron and copper content-New cuprous acid-chloroform extraction spectrophotometric method (GB/T 3654:2);
--- Gravimetric method for determination of ferroniobium and silicon content (GB/T 3654:3);
--- Chemical analysis methods for ferroniobium - Combustion gravimetric method for determination of carbon content (GB/T 3654:4);
--- Chemical analysis method of ferroniobium - Molybdenum blue photometric method for determination of phosphorus content (GB/T 3654:5);
--- Determination of sulfur content in ferroniobium by combustion iodine titration, methylene blue photometry and infrared absorption method (GB/T 3654:6);
--- Determination of niobium iron and titanium content by chromotropic acid photometric method and diantipyryl methane photometric method (GB/T 3654:8);
--- Chemical analysis method of ferroniobium - Determination of tungsten content by thiocyanate photometry (GB/T 3654:9);
--- Determination of niobium iron and aluminum content: EDTA titration method (GB/T 3654:10):
Determination of niobium iron and aluminum content-EDTA titration method
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 that the conditions stipulated by relevant national laws and regulations are met:
1 Scope
This document specifies the method for the determination of aluminum content in ferroniobium by EDTA titration:
This document is applicable to the determination of aluminum content in ferroniobium, with a measurement range (mass fraction): 1:00%~9:00%:
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 4010 Sampling and preparation of samples for chemical analysis of ferroalloys
GB/T 6379:1 Accuracy (trueness and precision) of measurement methods and results Part 1: General principles and definitions
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
GB/T 12806 Laboratory glassware single-line volumetric flasks
GB/T 12808 Laboratory glassware single-line pipettes
3 Terms and definitions
There are no terms or definitions that require definition in this document:
4 Principle
The sample was melted with sodium oxide and sodium hydroxide, leached with sodium chloride solution, and manganese was reduced with ethanol: A large amount of niobium, iron, titanium, etc: were separated from manganese by dry filtration:
Acidify part of the filtrate, add hydrogen peroxide to the tungsten test solution, adjust the solution acidity to pH 3-3:5, and precipitate aluminum with ammonium benzoate:
Add excess EDTA solution to the acidic solution: At pH 5:5-6:2, in the presence of xylenol orange indicator, use zinc standard solution
The excess EDTA is titrated with a standard zinc solution, and the EDTA complexed with aluminum is replaced by sodium fluoride and then titrated with a standard zinc solution:
5 Reagents
Unless otherwise specified, only approved analytical reagents shall be used in the analysis, and the experimental water shall be grade 3 or above distilled water as specified in GB/T 6682:
Water or water of equivalent purity:
5:1 Sodium peroxide: solid:
5:2 Sodium hydroxide: solid:
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