GB 46771-2025 Limitation requirements of harmful elements in graphite and fluorite English, Anglais, Englisch, Inglés, えいご
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ICS 13.230
CCS H 57
National Standard of the People's Republic of China
GB 46771-2025
Limitation requirements of harmful elements in graphite and fluorite
石墨和萤石中有害元素限量要求
Issue date: 2025-10-31 Implementation date: 2026-05-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Preface
1 Scope
2 Normative References
3 Terms and Definitions
4 Limit Requirements for Harmful Elements in Graphite and Fluorite
5 Test Methods
1 Scope
This document specifies the limit requirements for harmful elements in graphite and fluorite, and describes the corresponding test methods.
This document applies to flake graphite products, microcrystalline graphite products, and fluorite concentrate products.
2 Normative References
The contents of the following documents constitute the essential clauses of this document through normative references in the text. Among them, for normative references with a specified date, only the version corresponding to that date applies to this document; for normative references without a specified date, the latest version (including all amendments) applies to this document.
GB/T 3518 Flake Graphite
GB/T 3519 Microcrystalline Graphite
GB/T 3521 Chemical Analysis Methods for Graphite
GB/T 5195.12 Chemical Analysis Methods for Fluorite — Part 12: Determination of Arsenic Content
SN/T 3521 Simultaneous Determination of Arsenic and Mercury in Imported Coal — Hydride Generation - Atomic Fluorescence Spectrometry
3 Terms and Definitions
The terms and definitions defined in GB/T 3518 and GB/T 3519 and the following terms and definitions apply to this document.
3.1 Harmful Element
Elements that are obviously toxic to the human body and cause obvious environmental pollution.
[Source: GB/T 20424—2025, 3.2, with modification]
3.2 Fluorite Concentrate
A powdered fluorite product containing calcium fluoride as the main component, obtained after fluorite ore is processed through beneficiation, mechanical processing, and other processes.
4 Limit Requirements for Harmful Elements in Graphite and Fluorite
4.1 Limit Requirements for Harmful Elements in Graphite
Graphite is divided into flake graphite and microcrystalline graphite according to the grain size of graphite crystals.
According to the provisions of GB/T 3518, flake graphite is divided into four categories: high
- purity flake graphite, high - carbon flake graphite, medium - carbon flake graphite, and low
- carbon flake graphite, based on the fixed carbon content.
According to the provisions of GB/T 3519, microcrystalline graphite is divided into four categories: high - purity microcrystalline graphite, high - carbon microcrystalline graphite, medium - carbon microcrystalline graphite, and low - carbon microcrystalline graphite, based on the fixed carbon content.
The limit requirements for harmful elements in flake graphite should comply with Table 1, and those in microcrystalline graphite should comply with Table 2.
Table 1 Limit Requirements for Harmful Elements in Flake Graphite
Table 2 Limit Requirements for Harmful Elements in Microcrystalline Graphite
4.2 Limit Requirements for Harmful Elements in Fluorite
The limit requirements for harmful elements in fluorite should comply with Table 3.
Table 3 Limit Requirements for Harmful Elements in Fluorite
5 Test Methods
5.1 Test Methods for Harmful Elements in Graphite
5.1.1 Sulfur Content
Conduct in accordance with the provisions of GB/T 3521.
5.1.2 Mercury Content, Arsenic Content
Conduct in accordance with the provisions of SN/T 3521.
5.2 Test Methods for Harmful Elements in Fluorite
Conduct the determination of arsenic content in accordance with the provisions of GB/T 5195.12.
