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GB/T 6730.23-2025: Iron ores - Determination of titanium content - The ferric ammonium sulfate titrimetric method
Status: Valid GB/T 6730.23: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 6730.23-2025 | English | 369 |
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Iron ores - Determination of titanium content - The ferric ammonium sulfate titrimetric method
| Valid |
GB/T 6730.23-2025
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| GB/T 6730.23-2006 | English | 319 |
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Iron ores -- Determination of titanium content -- The ferric ammonium sulfate titrimetric method
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GB/T 6730.23-2006
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| GB/T 6730.23-1986 | English | 279 |
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Methods for chemical analysis of iron ores--The ferric ammonium sulfate volumetric method for the determination of titanium content
| Obsolete |
GB/T 6730.23-1986
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PDF similar to GB/T 6730.23-2025
Basic data | Standard ID | GB/T 6730.23-2025 (GB/T6730.23-2025) | | Description (Translated English) | Iron ores - Determination of titanium content - The ferric ammonium sulfate titrimetric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D31 | | Classification of International Standard | 73.060.10 | | Word Count Estimation | 18,175 | | Date of Issue | 2025-06-30 | | Date of Implementation | 2026-01-01 | | Older Standard (superseded by this standard) | GB/T 6730.23-2006 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 6730.23-2025: Iron ores - Determination of titanium content - The ferric ammonium sulfate titrimetric method
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT6730.23-2025
ICS 73.060.10
CCSD31
National Standard of the People's Republic of China
Replaces GB/T 6730.23-2006
Determination of titanium content in iron ore-Ammonium ferric sulfate titration method
Released on June 30, 2025
Implementation on June 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Preface
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 23 of GB/T 6730.For the published parts of GB/T 6730, see Appendix A.
This document replaces GB/T 6730.23-2006 "Determination of titanium content in iron ore - Ammonium ferric sulfate titration method" and GB/T 6730.23-
Compared with.2006, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) The preparation of titanium standard solution has been changed (see 5.12, 4.16 of the.2006 edition);
b) The preparation and calibration of "Ammonium Ferric Sulfate Standard Solution" have been changed (see 5.13, 4.17 of the.2006 edition);
c) The sample quantity has been changed (see 8.2, 7.2 of the.2006 edition);
d) Added the “melting-acidification method” decomposition method (see 8.5.1.2);
e) Reduced usage of ammonium sulfate (see 8.5.2, 7.4.2 of the.2006 edition);
f) Added titration method using "neutral red" as indicator (see 8.5.3);
g) The expressions of “precision”, “correctness check” and “calculation of final result” have been changed (see 9.2, 8.2 of the.2006 edition).
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 on Iron Ore and Direct Reduced Iron (SAC/TC317).
This document was drafted by. Panzhihua Iron and Steel Group Research Institute Co., Ltd., Shanxi Taigang Stainless Steel Co., Ltd., Baowu Resources Co., Ltd.,
China Certification and Inspection Group Hebei Co., Ltd., Sichuan Panyan Testing Technology Co., Ltd., Metallurgical Industry Standards and Information Research Institute, Panzhihua Iron and Steel Group
Zhihua Steel & Vanadium Co., Ltd., Chengdu University of Technology.
The main drafters of this document are. Su Yang, Liu Liwei, Wang Xuemei, Wang Jun, Jiang Xue, Zhang Xinxin, Wang Feng, Zhang Xiao, Zhang Zugang, Gao Ying, Chen De,
Wang Zhang, Yu Lihui, Li Keming, Liu Zhaohua, Chen Zibin, Zhang Dafu, Zhang Chen, and Ma Jie.
This document was first issued in 1986, revised for the first time in.2006, and this is the second revision.
introduction
Iron ore is the main raw material of the steel industry. In the standard system of the steel industry, the standard system of the determination method of the 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 method standards serves 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 water content, total iron content, metal content and so on in iron ore products.
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 of chemical composition 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.
The development of technology and actual production needs have led to the continuous development and revision of the standard system over the years, which is currently
For details of the constituent documents of GB/T 6730, please see Appendix A.
GB/T 6730.23 provides a method for determining the titanium content in iron ore by ammonium ferric sulfate titration.
Determination of titanium content in iron ore-Ammonium ferric sulfate titration method
Warning. Personnel using this document should have experience in formal laboratory work practices. This document does not address all possible safety issues.
For any problems, users are 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 describes a method for the determination of titanium content in iron ores by titration with ammonium ferric sulfate.
This document applies to the determination of titanium content in natural iron ore, iron concentrate and lump ore, including sintered products. Titanium content measurement range (mass
Score).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 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 10322.1 Iron ore sampling and sample preparation methods
GB/T 12805 Laboratory glassware burettes
GB/T 12806 Laboratory glassware - Single-marked 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 Principles
The sample was melted with sodium peroxide, acidified with hydrochloric acid, and in a hydrochloric acid and sulfuric acid medium, isolated from air, and the tetravalent titanium was reduced to trivalent with metallic aluminum.
Titanium, in the presence of an indicator, is titrated with ammonium ferric sulfate standard solution to determine the trivalent titanium in the solution. The consumption of ammonium ferric sulfate standard solution is used to calculate the
Titanium content.
5 Reagents and Materials
Unless otherwise specified, only analytically pure reagents and grade 3 or higher water as specified in GB/T 6682 or water with
Its purity is equivalent to water.
5.1 Aluminum sheet, purity not less than 99.5%.
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