GB/T 3884.4-2025Methods for chemical analysis of copper concentrates — Part 4: Determination of lead, zinc, cadmium, nickel and magnesium oxide contents — Flame atomic absorption spectrometry method (English PDF)

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 4 of GB/T 3884, "Chemical Analysis Methods for Copper Concentrates". GB/T 3384 has already published the following 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 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 amounts of copper, sulfur, lead, zinc, iron, aluminum, calcium, magnesium and manganese by wavelength dispersive X-ray fluorescence spectrometry.

This document replaces GB/T 3884.4-2012 "Chemical Analysis Methods for Copper Concentrates - Part 4: Determination of Magnesium Oxide Content - Flame Atomic Absorption Spectrometry".

The methods used are. "Spectroscopic Method for Copper Concentrates - Part 6: Determination of Lead, Zinc, Cadmium and Nickel Contents" and GB/T 3884.6-2012 "Chemical Analysis Methods for Copper Concentrates - Part 6: Determination of Lead, Zinc and Cadmium Contents - Flame Spectroscopy".

Compared with GB/T 3884.4-2012 and GB/T 3884.6-2012, the main changes in the "Sub-absorption spectroscopy" standard, apart from structural adjustments and editorial modifications, are as follows.

The technological changes are as follows.

a) The scope of application has been changed. from "copper concentrate" to "copper concentrate and copper slag concentrate," and the determination ranges for zinc, cadmium, and magnesium oxide have been changed accordingly.

The percentages are 0.020%~2.50%, 0 0020%~0.50%, and 0.050%~6.50% (see Chapter 1, GB/T 3884.4-2012).

Chapter 1 (GB/T 3884.6-2012, Chapter 1)

b) The principle has been changed (see Chapter 4, Chapter 2 of GB/T 3884.4-2012, and Chapter 2 of GB/T 3884.6-2012);

c) The requirements for reagents have been changed (see Chapter 5, Chapter 3 of GB/T 3884.4-2012, and Chapter 3 of GB/T 3884.6-2012);

d) The relevant requirements for the instrument have been changed (see Chapter 6, Chapter 4 of GB/T 3884.4-2012, and Chapter 4 of GB/T 3884.6-2012);

e) The relevant requirements for the determination of lead, zinc, cadmium, nickel, and magnesium oxide content have been revised (see 8.4, 6.4 of GB/T 3884.4-2012).

GB/T 3884.6-2012, sections 6.4 and 6.5);

f) The requirements for drawing standard working curves have been changed, and the separate preparation of each single-element series standard has been modified to allow for preparation based on actual conditions.

Prepare single-element series standards or mixed series standards (see 8.5, 6.5 of GB/T 3884.4-2012 and 6.5 of GB/T 3884.6-). (June 6, 2012)

g) The requirements for test data processing have been changed (see Chapter 9, Chapter 7 of GB/T 3884.4-2012, and GB/T 3884.6-2012). Chapter 7);

h) The precision data has been changed (see Chapter 10, Chapter 10 of GB/T 3884.4-2012, and Chapter 10 of GB/T 3884.6-2012).

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: Daye Nonferrous Metals Design & Research Institute Co., Ltd., Tongling Nonferrous Metals Group Co., Ltd., and Shenzhen Zhongjinling.

Nanfang Nonferrous Metals Co., Ltd., Yunnan Copper Co., Ltd., Chenzhou Municipal Product Quality Supervision and Inspection Institute, Guangxi Jinchuan Nonferrous Metals Limited Liability Company, Zijin Mining Group Co., Ltd., Guangdong Academy of Sciences Industrial Analysis and Testing Center, China Certification & Inspection Group Guangxi Limited The company, China Nonferrous Metals Guilin Mineral Resources and Geology Research Institute Co., Ltd., Zhuzhou Smelting Group Co., Ltd., Minmetals Copper (Hunan) Co., Ltd.

Yangxin Hongsheng Copper Industry Co., Ltd., Jiangxi Copper Lead-Zinc Metal Co., Ltd., First Geological Team of Hubei Provincial Bureau of Geology, and Northern Copper Co., Ltd.

The company, Henan Zhongyuan Gold Smelting Plant Co., Ltd., Hunan Nonferrous Metals Research Institute Co., Ltd., and Changsha Mining and Metallurgy Research Institute Testing Technology Co., Ltd.

Limited Liability Company, Jinchuan Group Co., Ltd., Yunnan Tin Wenshan Zinc-Indium Smelting Co., Ltd., Zhejiang Huayou Cobalt Co., Ltd., Yunnan Hua Lianzinc Indium Corporation and Beijing Electronic Science and Technology Vocational College.

The main drafters of this document are: Pan Xiaoling, Wei Wen, Xiong Meiyu, Zeng Jing, Wang Zhi, Liao Guiping, Zhang Jian, Li Jie, Yang Jingli, Luo Ronggen, and Tang Qing.

Wei Peidong, Wang Jiangliang, Zhu Wei, Yuan Yang, Guo Yanyao, Huang Li, Xie Lei, Zeng Lingling, Feng Hulin, Qiu Qiuyu, Wu Xueying, Liao Yun'an, Yan Weiqiang, Shi Jing Chu Yan, Huang Shangyuan, Dai Bin, Tan Jiaxiang, Yang Dingxian, Zhao Dongjie, Tang Feiyan, She Jiahui, Bai Ling, Cai Hongxin, Xu Jianqing, Yang Shaohui, Li Shuguang Chen Fei and Lei Yangui.

The release history of this document and the document it replaces is as follows.

— First published in 1983 as GB/T 3884.5-1983, first revised in 2000 as GB/T 3884.4-2000, and in 2012...

The second revision is GB/T 3884.4-2012;

— This is the third revision, and it has been incorporated into GB/T 3884.6-2012 "Chemical Analysis Methods for Copper Concentrates - Part 6: Lead, Zinc, Cadmium and Nickel Content".

The content of "Determination of Flame Atomic Absorption Spectrometry" (GB/T 3884.6-2012) is as follows. [List of documents replaced and previous versions follows].

GB/T 3884.7-1983 "Chemical Analysis Methods for Copper Concentrate. Determination of Lead Content by Atomic Absorption Spectrophotometry", GB/T 3884.11- 1983 "Chemical Analysis Methods for Copper Concentrate. Determination of Cadmium Content by Atomic Absorption Spectrophotometry", GB/T 3884.12-1983 "Chemical Analysis Methods for Copper Concentrate". Determination of Cadmium Content by Atomic Absorption Spectrophotometry Analytical Methods. Determination of Zinc Content by Atomic Absorption Spectrophotometry; GB/T 3884.6-2000 Chemical Analysis Methods for Copper Concentrate, Lead, Zinc, (Determination of Cadmium and Nickel Content).

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 China'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 increases the reliability and comparability of test results, enabling rapid testing.

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 amounts of copper, sulfur, lead, zinc, iron, aluminum, calcium, magnesium and manganese by wavelength dispersive X-ray fluorescence spectrometry.

This document meets the domestic and international requirements for the detection of lead, zinc, cadmium, nickel, and magnesium oxide content in copper concentrate and copper slag concentrate, and standardizes the pretreatment process for samples.

To improve the methodological, repeatable, and reproducible numerical values, flame atomic absorption spectrometry was used to rapidly and accurately determine the content of lead, zinc, cadmium, nickel, and magnesium oxide.

It is of great practical importance and necessity for trade settlement, production guidance, and resource recycling.

Chemical Analysis Methods for Copper Concentrate Part 4: Lead, Zinc, Cadmium, Nickel and Magnesium Oxide Determination of content Flame atomic absorption spectrometry

1 Scope

This document describes a method for determining the content of lead, zinc, cadmium, nickel, and magnesium oxide in copper concentrate and copper slag concentrate by flame atomic absorption spectrometry.

This document applies to the determination of lead, zinc, cadmium, nickel, and magnesium oxide content in copper concentrate and copper slag concentrate. The determination range is shown in Table 1. Table 1 Measurement Range Elements Pb Zn Cd Ni MgO Measurement range 0.10~5.00 0.020~2.50 0 0020~0.50 0.010~1.00 0.050~6.50

2 Normative references

GB/T 6682

GB/T 8170

3 Terms and Definitions

This document does not contain any terms or definitions that need to be defined.

4 Principles

The sample was decomposed with hydrochloric acid, nitric acid, hydrofluoric acid, and perchloric acid. The samples were then analyzed in a dilute hydrochloric acid medium at the recommended wavelengths for each element using an atomic absorption spectrometer.

Using an air-acetylene flame, after subtracting background absorption, the absorbance of lead, zinc, cadmium, nickel, and magnesium was measured respectively, and the absorbance of each element was calculated using the working curve method. content.

5 Reagents

Unless otherwise specified, only reagents confirmed to be of analytical grade shall be used in the analysis.

5.1 Water, GB/T 6682, Grade II or above.

5.2 Hydrochloric acid (rho=1.19g/mL).