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The specification for limit on harmful element content of the heavy nonferrous metal concentrates products
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[GB/T 20424-2006] The specification for limit on harmful element content of the heavy metal concentrates products
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GB/T 20424-2025: The specification for limit on harmful element content of the heavy nonferrous metal concentrates products ---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/GBT20424-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.01
CCS H 62
Replacing GB/T 20424-2006
The Specification for Limit on Harmful Element Content of
the Heavy Nonferrous Metal Concentrates Products
Issued on. FEBRUARY 28, 2025
Implemented on. SEPTEMBER 1, 2025
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 7
4 Limit Requirements... 8
5 Test Methods... 10
6 Inspection Rules... 11
Foreword
This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for
Standardization – Part 1.Rules for the Structure and Drafting of Standardizing Documents.
This Document replaced GB/T 20424-2006 The Specification for Limit on Harmful Element
Content of the Heavy Metal Concentrates Products. Compared with GB/T 20424-2006, the
major technical changes of this Document are as follows besides the structural adjustments and
editorial modifications.
a) Change the terms and definitions of some concentrates; and add the term and definition
of “antimony concentrate” (see Clause 3 of this Edition; Clause 3 of the 2006 Edition);
b) Change the limit of As in lead concentrate from 0.70% to 0.60% (see 4.2 of this Edition;
4.2 of the 2006 Edition);
c) Add the limits of Cd and Tl in lead concentrate to 0.40% and 0.02% respectively (see 4.2
of this Edition);
d) Change the limit of As in zinc concentrate from 0.60% to 0.50% (see 4.3 of this Edition;
4.3 of the 2006 Edition);
e) Add the limit of Tl in zinc concentrate to 0.02% (see 4.3 of this Edition);
f) Add the limit of Tl in lead and zinc bulk concentrate to 0.02% (see 4.4 of this Edition);
g) Change the limit of As in tin concentrate from 2.50% to 2.00% (see 4.5 of this Edition;
4.5 of the 2006 Edition);
h) Change the limits of Pb and As in cobalt concentrate from 0.10% to 0.08% (see 4.7 of
this Edition; 4.7 of the 2006 Edition);
i) Add the limit of Cr in cobalt concentrate to 0.05% (see 4.7 of this Edition);
j) Add the limits of As, Cd and Hg in antimony concentrate to 0.60%, 0.005 0% and 0.005
0% respectively (see 4.8 of this Edition);
k) Change the test method for Hg in lead concentrate (see 5.2 of this Edition; 5.2 of the 2006
Edition);
l) Add the test methods for Cd and Tl in lead concentrate (see 5.2 of this Edition);
m) Add the test method for Tl in zinc concentrate (see 5.3 of this Edition);
n) Add the test method for Tl in lead and zinc bulk concentrate (see 5.4 of this Edition);
o) Add the test method for Cr in cobalt concentrate (see 5.7 of this Edition);
p) Add the test methods for As, Cd and Hg in antimony concentrate (see 5.8 of this Edition);
q) Add the content of the inspection rules for antimony concentrate (see Clause 6 of this
Editon).
Please note some contents of this Document may involve patents. The issuing agency of this
Document shall not assume the responsibility to identify these patents.
This Document was proposed by China Nonferrous Metals Industry Association.
This Document shall be under the jurisdiction of National Technical Committee on Nonferrous
Metals of Standardization Administration of China (SAC/TC 243).
Drafting organizations of this Document. China Nonferrous Metals Techno-Economic
Research Institute Co., Ltd.; Tongling Nonferrous Metals Group Co., Ltd.; Huludao Zinc
Industry Co., Ltd.; Shenzhen Zhongjin Lingnan Nonfemet Co., Ltd.; Jinchuan Group Co., Ltd.;
Guangxi Huaxi Nonferrous Metal Co., Ltd.; Shuikoushan Nonferrous Metals Co., Ltd.;
Zhejiang Huayou Cobalt Co., Ltd.; Hsikwang Shan Twinkling Star Co., Ltd.; Henan Yuguang
Gold & Lead Co., Ltd.; China Minmetals Nonferrous Metals Co., Ltd.; Jiangxi Copper
Corporation Limited; Yunnan Tin Company Limited; Yunnan Chihong Zn & Ge Co., Ltd.;
North Copper Co., Ltd.; GEM Co., Ltd.; North Mining Shares Company Limited; Zhuzhou
Smelter Group Co., Ltd.; Jingmen GEM New Materials Co., Ltd.; Zijin Mining Group Co., Ltd.;
Shenzhen Zhongjin Lingnan Nonfemet Co., Ltd., Shaoguan Smelter; and Quzhou Huayou
Resources Recycling Technology Co., Ltd.
Chief drafting staffs of this Document. Zhao Yongshan, Wu Shuaijin, Guo Tianli, Peng Kang,
Lin Ruoxu, Su Fei, Yan You, Chen Xuehua, Jin Guizhong, Zhang Benjun, Cai Yong, Yang
Chunliang, Li Liangdong, Luo Fuxing, Zuo Changhu, Lei Yangui, Song Yingqiu, Wang
Zhichao, Yu Zhongbao, Li Ze, Wang Tiancheng, Zhang Bo, Zhang Chun, Li Lili, Niu Tianrong,
Chen Yun, Cai Chuangkai, Xu Kaihua, Liang Xinxing, Wei Qiong, Meng Qingwu, Wu
Jiangmin, Zhang Xijun, Liu Yongsong, Hu Weiwen, Qian Zhenyang, Li Wenmei, Liu Fengmei,
Yang Chunyu, Bai Peng, Xu Peng, Zhai Aiping, Peng Bo, Zhang Kun, Ye Linfeng, Zhao Liming,
Deng Zhenli, Yang Dechen, Li Pengfei, Li Jing, Wang Dawen, Huang Xu, Luo Shen, Zhang
Guocheng, Chen Ting, and Sun Xu.
GB 20424-2006 was first-time published in 2006; it was transferred into recommended standard
in 2017; it is first-time revised hereby.
The Specification for Limit on Harmful Element Content of
the Heavy Nonferrous Metal Concentrates Products
1 Scope
This Document specifies the limit requirements, test methods and inspection rules for harmful
elements contained in heavy non-ferrous metal concentrate products.
This Document applies to heavy non-ferrous metal concentrate products.
2 Normative References
The provisions in following documents become the essential provisions of this Document
through reference in this Document. For the dated documents, only the versions with the dates
indicated are applicable to this Document; for the undated documents, only the latest version
(including all the amendments) is applicable to this Document.
GB/T 1819.4 Methods for chemical analysis of tin concentrates - Determination of lead
content - Flame atomic absorption spectrometric method and EDTA titrimetric method
GB/T 1819.5 Methods for chemical analysis of tin concentrates - Determination of arsenic
content - The molybdoantimonyarsenate blue spectrophotometric method and the
distillation-iodometric titration
GB/T 1819.17 Methods for chemical analysis of tin concentrates - Part 17.Determination
of mercury content - Atomic fluorescence spectrometric method
GB/T 3884.5 Methods for chemical analysis of copper concentrates - Part 5.Determination
of fluoride content - Ion selective electrode method
GB/T 3884.6 Methods for chemical analysis of copper concentrates - Part 6.Determination
of lead, zinc, cadmium and nickel content - Flame atomic absorption spectrometry method
GB/T 3884.7 Methods for chemical analysis of copper concentrates - Part 7.Determination
of lead content - Na2EDTA titration method
3 Terms and Definitions
For the purposes of this Document, the following terms and definitions apply.
3.1 Heavy nonferrous metal concentrates products
A general term for heavy metal concentrates in nonferrous metals.
NOTE. It generally includes copper concentrate, lead concentrate, zinc concentrate, lead and zinc bulk
concentrate, tin concentrate, nickel concentrate, cobalt concentrate, antimony concentrate, etc.
3.3 Copper concentrate
A concentrate product for copper smelting with a copper content of no less than 13% obtained
by flotation or other methods of beneficiation of copper-containing ore.
3.4 Lead concentrate
A concentrate product for lead smelting with a lead content of no less than 40% obtained by
flotation or other methods of beneficiation of lead-containing ore.
3.6 Lead and zinc bulk concentrate
A concentrate product for smelting lead and zinc simultaneously with a lead content of no less
than 14%, a zinc content of no less than 28%,
3.7 Tin concentrate
A concentrate product for smelting tin with a tin content of no less than 40%, thereof the tin
content is no more than 30% for the particle size of no more than 3mm and less than 0.074mm,
obtained by flotation or other methods of beneficiation of tin-containing ore.
3.8 Nickel concentrate
A concentrate product for smelting nickel with a nickel content of no less than 5.0%, thereof
the nickel content is no less than 80% for the particle size of less than 0.074mm, obtained by
flotation or other methods of beneficiation of nickel-containing ore.
4 Limit Requirements
4.1 Copper concentrate
The harmful elements contained in copper concentrate shall comply with the provisions of
Table 1.
4.2 Lead concentrate
The harmful elements contained in lead concentrate shall comply with the provisions of Table
2.
4.3 Zinc concentrate
The harmful elements contained in zinc concentrate shall comply with the provisions of Table
3.
4.4 Lead and zinc bulk concentrate
The harmful elements contained in lead and zinc bulk concentrate shall comply with the
provisions of Table 4.
Table 4 -- Limits of harmful elements in lead and zinc bulk concentrate
4.7 Cobalt concentrate
The harmful elements contained in cobalt concentrate shall comply with the provisions of Table
7.
4.8 Antimony concentrate
The harmful elements contained in antimony concentrate shall comply with the provisions of
Table 8.
5 Test Methods
5.1 Copper concentrate
The arbitration analysis methods for the chemical compositions of Pb, As, F, Cd and Hg
elements in copper concentrate shall be carried out in accordance with the provisions of GB/T
3884.7, GB/T 3884.9, GB/T 3884.5, GB/T 3884.6 and GB/T3884.11 respectively.
5.2 Lead concentrate
The arbitration analysis methods for the chemical compositions of As, Hg, Cd and Tl elements
in lead concentrate shall be carried out in accordance with the provisions of GB/T 8152.5, GB/T
8152.11, GB/T 8152.12 and GB/T 8152.13 respectively.
5.4 Lead and zinc bulk concentrate
The arbitration analysis methods for the chemical compositions of As, Cd, Hg and Tl elements
in lead and zinc bulk concentrate shall be carried out in accordance with the provisions of YS/T
461.4, YS/T 461.7, YS/T 461.6 and YS/T 461.12 respectively.
5.5 Tin concentrate
The arbitral analysis methods for the chemical compositions of Pb, As and Hg in tin concentrate
shall be carried out in accordance with the provisions of GB/T 1819.4, GB/T 1819.5 and GB/T
1819.17 respectively.
5.7 Cobalt concentrate
The arbitration analysis methods for the chemical compositions of Pb, As, Cd, Hg and Cr
elements in cobalt concentrate shall be carried out in accordance with the provisions of YS/T
472.4, YS/T 472.5, YS/T 472.1, YS/T 472.3 and YS/T 472.2 respectively.
6 Inspection Rules
The inspection rules for harmful elements contained in copper concentrate, lead concentrate,
zinc concentrate, lead and zinc bulk concentrate, tin concentrate, nickel concentrate,
...... Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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