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GB/T 3884.15-2025: Methods for chemical analysis of copper concentrate - Part 15: Determination of total iron and ferriferrous oxide contents
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GB/T 3884.15-2025	English	279	Add to Cart	3 days [Need to translate]	Methods for chemical analysis of copper concentrate - Part 15: Determination of total iron and ferriferrous oxide contents
GB/T 3884.15-2014	English	139	Add to Cart	3 days [Need to translate]	Methods for chemical analysis of copper concentrates -- Part 15: Determination of iron content -- Potassium dichromate titration method
GB/T 3884.15-1986	English	RFQ	ASK	3 days [Need to translate]	Methods for chemical analysis of copper concentrates--The flame atomic absorption spectrophotometric method for the determination of silver content

GB/T 3884.15-2025: Methods for chemical analysis of copper concentrate - Part 15: Determination of total iron and ferriferrous oxide contents

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ICS 77.120.30 CCSH13 National Standards of the People's Republic of China Replaces GB/T 3884.15-2014 Chemical Analysis Methods for Copper Concentrates, Part 15. Determination of total iron and iron(III) oxide content Published on 2025-08-29 Implemented on 2026-03-01 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document is Part 15 of GB/T 3884, "Chemical Analysis Methods for Copper Concentrates". GB/T 3884 has the following parts published. ---Part 1.Determination of Copper Content by Iodometric and Electrolytic Methods; ---Part 2.Determination of Gold and Silver Content by Flame Atomic Absorption Spectrometry and Fire Assay; ---Part 3.Determination of Sulfur Content by Gravimetric and Combustion Titration Methods; ---Part 4.Determination of Lead, Zinc, Cadmium, Nickel and Magnesium Oxide Content by Flame Atomic Absorption Spectrometry; ---Part 5.Determination of Fluorine Content using Ion-Selective Electrode Method; ---Part 7.Determination of Lead and Zinc Content by Na₂EDTA Titration; ---Part 9.Determination of Arsenic, Antimony and Bismuth Content; ---Part 11.Determination of Mercury Content by Cold Atomic Absorption Spectrometry; ---Part 12.Determination of Fluorine and Chlorine Content by Ion Chromatography and Potentiometric Titration; ---Part 15.Determination of total iron and iron(III) oxide content; ---Part 16.Determination of Silica Content by Potassium Fluorosilicate Titration and Gravimetric Method; ---Part 17.Determination of Alumina Content by Chromium Azure S Micellar Solubilization Spectrophotometric Method and Precipitation Separation - Fluoride Replacement- Na2EDTA titration method; ---Part 18.Determination of the content of arsenic, antimony, bismuth, lead, zinc, nickel, cadmium, cobalt, chromium, aluminum oxide, magnesium oxide, and calcium oxide, including inductive coupling, etc. Particle atomic emission spectrometry; ---Part 19.Determination of Thallium Content by Inductively Coupled Plasma Mass Spectrometry; ---Part 20.Determination of Mercury Content - Direct Method with Solid Injection; ---Part 21.Determination of the content of copper, sulfur, lead, zinc, iron, aluminum, calcium, magnesium and manganese by wavelength dispersive X-ray fluorescence spectrometry. This document replaces GB/T 3884.15-2014 "Chemical Analysis Methods for Copper Concentrates - Part 15.Determination of Iron Content - Potassium Dichromate Titration". Compared with GB/T 3884.15-2014, the main technical changes in the "Law" are as follows, apart from structural adjustments and editorial modifications. a) The scope has been changed; the applicable object has been changed from "copper concentrate" to "copper concentrate and copper slag concentrate," and the original text "This document applies to iron in copper concentrate" has been changed to "[]". The statement "The content determination range is 8.00%~40.00%" is revised to "This document applies to the determination of total iron and... in copper concentrate and copper slag concentrate." For the determination of ferric oxide, the total iron determination range is 8.00%~42.00%; the ferric oxide determination range is 0.10%~ 5.0% (see Chapter 1, Chapter 1 of the.2015 edition); b) A step has been added to the total iron determination process to eliminate interference from arsenic and antimony using hydrobromic acid (see 4.5.4.1); c) The method for the blank test in the determination of total iron has been changed (see 4.5.4.3, 5.3 in the.2015 version); d) The sample dissolution and determination methods for residues in the total iron determination have been modified (see 4.5.4.5~4.5.4.7, 5.4.3 in the.2015 edition); e) The precision data for the determination of total iron have been revised (see 4.7, Chapter 7 of the.2015 edition); f) The content on the determination of iron tetroxide in copper concentrate by magnetic material analysis has been added (see Chapter 5). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed by the China Nonferrous Metals Industry Association. This document is under the jurisdiction of the National Technical Committee on Standardization of Nonferrous Metals (SAC/TC243). This document was drafted by. Beijing Mining Testing Technology Co., Ltd., Zijin Mining Group Co., Ltd., and Tongling Nonferrous Metals Group Holding Co., Ltd. Limited Liability Company, Yanggu Xiangguang Copper Industry Co., Ltd., Shandong Hengbang Smelting Co., Ltd., Henan Zhongyuan Gold Smelting Plant Co., Ltd. Guangxi Jinchuan Nonferrous Metals Co., Ltd., First Geological Team of Hubei Provincial Bureau of Geology, Industrial Analysis and Testing Center of Guangdong Academy of Sciences, Jiangxi Copper Corporation Joint-stock company, Yunnan Hualian Zinc Indium Co., Ltd., Guohe General (Qingdao) Testing and Evaluation Co., Ltd., Chenzhou Municipal Product Quality Supervision Bureau Inspection and Testing Institute, Shandong Zhongjin Lingnan Copper Industry Co., Ltd., Huludao Zinc Industry Co., Ltd., Daye Nonferrous Metals Design and Research Institute Co., Ltd. Chifeng Yuntong Nonferrous Metals Co., Ltd., Jilin Zijin Copper Co., Ltd., and China Copper Southeast Copper Co., Ltd. The main drafters of this document are. Miao Xiaohuan, Chen Zhuhai, Ruan Guise, Feng Zhenhua, Zou Xiaofen, Lai Qiuxiang, Lin Yingling, Ni Min, Wu Dezhen, and Zheng Xu. Wan Shuang, Liu Tianyi, Pan Yuxi, Hu Aina, Wang Danyang, Xie Fei, Jiang Yanshui, Wang Xia, Xie Peng, Li Xianhe, Li Tengfei, Yin Wenmei, He Chunmei Tan Jiaxiang, Qu Yuxin, Xu Yefeng, Rong Shasha, Sun Fuying, Zhou Guobiao, Ma Dongmei, Xue Jiao, Xie Lei, Liu Jie, Tan Xiuli, Zhang Mingli, Sun Ying, Li Ye Chen Chengxin, Cong Tiejun, Pan Xiaoling, Yang Hongyu, Yu Kun, Liu Zhongmei, Chen Xiao, Zhang Shanshan. This document was first published in.2014, and this is its first revision.

introduction

Copper concentrate and copper slag concentrate are raw materials for copper smelting. Standards for chemical composition analysis methods of copper concentrate play a crucial role in the non-ferrous metals industry's standard system. This series of methods plays a vital role in the production, trade, and application of copper concentrate, providing technical support for the high-quality development of my country's non-ferrous metals industry. The purpose of GB/T 3884, "Chemical Analysis Methods for Copper Concentrates," is to describe the composition of different chemical elements such as copper, gold, silver, lead, and zinc in copper concentrates. Determination methods. With the continuous increase in copper demand, the copper concentrate trade is also constantly growing, indicating a very promising future for the copper industry. To meet... The industry's demand for copper concentrate and copper slag concentrate production, trade, and resource recycling necessitates improved reliability and comparability of testing results, and faster processing. Accurate determination of the content of various elements in copper concentrate and copper slag concentrate is of great significance; based on extensive research into enterprise needs, [the following is discussed/conducted]. GB/T 3884 "Chemical Analysis Methods for Copper Concentrates" (21 parts in total) has been integrated and revised. The integrated GB/T 3884 "Chemical Analysis Methods for Copper Concentrates" is proposed to consist of 15 parts. ---Part 1.Determination of Copper Content by Iodometric and Electrolytic Methods; ---Part 2.Determination of Gold and Silver Content by Flame Atomic Absorption Spectrometry and Fire Assay; ---Part 3.Determination of Sulfur Content by Gravimetric and Combustion Titration Methods; ---Part 4.Determination of Lead, Zinc, Cadmium, Nickel and Magnesium Oxide Content by Flame Atomic Absorption Spectrometry; ---Part 5.Determination of Fluorine Content using Ion-Selective Electrode Method; ---Part 7.Determination of Lead and Zinc Content by Na₂EDTA Titration; ---Part 9.Determination of Arsenic, Antimony and Bismuth Content; ---Part 11.Determination of Mercury Content. Cold Atomic Absorption Spectrometry and Direct Solid Sample Introduction Method; ---Part 12.Determination of Fluorine and Chlorine Content by Ion Chromatography and Potentiometric Titration; ---Part 15.Determination of total iron and iron(III) oxide content; ---Part 16.Determination of Silica Content by Potassium Fluorosilicate Titration and Gravimetric Method; ---Part 17.Determination of Alumina Content by Chromium Azure S Micellar Solubilization Spectrophotometric Method and Precipitation Separation - Fluoride Replacement- Na2EDTA titration method; ---Part 18.Determination of the content of arsenic, antimony, bismuth, lead, zinc, nickel, cadmium, cobalt, chromium, aluminum oxide, magnesium oxide, and calcium oxide, including inductive coupling, etc. Particle atomic emission spectrometry; ---Part 19.Determination of Thallium Content by Inductively Coupled Plasma Mass Spectrometry; ---Part 21.Determination of the content of copper, sulfur, lead, zinc, iron, aluminum, calcium, magnesium and manganese by wavelength dispersive X-ray fluorescence spectrometry. This revision expands the scope of application of the standard, improves the sample dissolution method for total iron content testing, and updates the repeatability and reproducibility data. The value was also increased; a method for determining the content of iron tetroxide was added, which is of great significance for trade settlement and production guidance. Chemical Analysis Methods for Copper Concentrates, Part 15. Determination of total iron and iron(III) oxide content 1.Scope This document describes the determination of total iron content in copper concentrate and copper slag concentrate by potassium dichromate titration and the determination of iron(III) oxide by magnetic analysis. Methods for determining content. This document applies to the determination of total iron and ferric oxide (Fe3O4) content in copper concentrate and copper slag concentrate. The determination range for total iron (mass fraction) is as follows. 8.00%~42.00%; the determination range of ferric oxide (mass fraction) is 0.10%~5.0%. This document does not apply to samples containing more than 0.10% of magnetic materials such as elemental iron, elemental cobalt, and elemental nickel, specifically iron(III) oxide. Measurement.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 6682 Specifications and test methods for water used in analytical laboratories 3.Terms and Definitions This document does not contain any terms or definitions that need to be defined. 4.Determination of total iron content by potassium dichromate titration method 4.1 Principle The sample was dissolved in ammonium fluoride, hydrochloric acid, nitric acid, sulfuric acid, and perchloric acid. Iron was precipitated with ammonia water to separate it from the copper matrix. (If insoluble residue remains after separation, it should be treated with...) (Corrected by sodium peroxide alkali fusion) In hydrochloric acid medium, most of the ferric ions were reduced with stannous chloride, and the remaining small amount of ferric ions were dissolved in tungstic acid. Sodium is used as an indicator, titanium trichloride is used for reduction, and excess reducing agent is oxidized with dilute potassium dichromate in a sulfuric-phosphoric acid mixed medium, with sodium diphenylamine sulfonate as the reducing agent. The indicator is used to titrate with a standard potassium dichromate solution to calculate the iron content. The total iron content is then obtained by adding the iron content in the filter residue. 4.2 Reagents or Materials Unless otherwise specified, only reagents confirmed to be of analytical grade shall be used in the analysis. 4.2.1 Water, GB/T 6682, Grade II or above. 4.2.2 Ammonium chloride. 4.2.3 Sodium peroxide. 4.2.4 Hydrochloric acid (ρ=1.19g/mL). 4.2.5 Nitric acid (ρ=1.42g/mL). 4.2.6 Sulfuric acid (ρ=1.84g/mL). ...