GB/T 3519-2023_English: PDF (GB/T3519-2023)
| Standard ID | USD | BUY PDF | Lead-Days | Standard Title (Description) | Status |
| GB/T 3519-2023 | 189 |
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Cryptocrystalline graphite
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| GB/T 3519-2008 | 80 |
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Amorphous graphite
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| GB/T 3519-1995 | 199 |
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Amorphous graphite
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| Standard ID | GB/T 3519-2023 (GB/T3519-2023) | | Description (Translated English) | (Health Information Data Metacatalog - Part 10: Medical Diagnosis) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | C07 | | Classification of International Standard | 11.020 | | Word Count Estimation | 36,373 | | Date of Issue | 2023-10-07 | | Date of Implementation | 2024-04-01 | | Older Standard (superseded by this standard) | WS/T 363.10-2011 | | Issuing agency(ies) | health committee |
GB/T 3519-2023: Microcrystalline graphite
ICS 73:080
CCSQ51
National Standards of People's Republic of China
Replace GB/T 3519-2008
microcrystalline graphite
Published on 2023-11-27
2024-06-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Preface
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 replaces GB/T 3519-2008 "Microcrystalline Graphite": Compared with GB/T 3519-2008, except for structural adjustments and editorial changes
In addition, the main technical changes are as follows:
a) Changed the “scope” (see Chapter 1, Chapter 1 of the:2008 edition);
b) Added normative reference documents GB/T 19077 (see 6:3), GB/T 6682 (see 6:4:2:1), GB/T 8170 (see 6:4:6),
JC/T 2571 (see 6:5), GB/T 6679 (see 7:3:1);
c) Changed the definition of the term "microcrystalline graphite" and added the term and definition of "graphitization degree" (see Chapter 3, Chapter 3 of the:2008 edition
chapter);
d) Changed “Classification and Labeling” (see Chapter 4, Chapter 4 of the:2008 edition);
e) Changed the “Requirements” (see Chapter 5, Chapter 5 of the:2008 edition);
f) Changed the “test method” (see Chapter 6, Chapter 6 of the:2008 edition);
g) The “inspection rules” have been changed (see Chapter 7, Chapter 7 of the:2008 edition);
h) "Packaging, marking, transportation and storage" has been changed (see Chapter 8, Chapter 8 of the:2008 edition):
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed by China Building Materials Federation:
This document is under the jurisdiction of the National Technical Committee on Standardization of Non-Metallic Mineral Products and Products (SAC/TC406):
This document was drafted by: Hunan Dingli Technology Co:, Ltd:, Xianyang Non-metallic Mineral Research and Design Institute Co:, Ltd:, Mining and Metallurgy Technology Group
Co:, Ltd:, Southern Graphite Co:, Ltd:, Zhalutqi Huayuan Mining Co:, Ltd:, Shangrao Juweixing Technology Co:, Ltd:, Chenzhou City
Commodity Quality Supervision and Inspection Institute, Hunan Yirun New Material Technology Co:, Ltd:, Hebei Zhengda Friction Braking Material Co:, Ltd:, China Building Materials
Industrial Geological Exploration Center, Shaanxi University of Science and Technology, Suzhou Mingshengfan Technology Co:, Ltd:
The main drafters of this document: Dai Yu, Zhou Zhiyong, Xie Qingmao, Zhang Honglin, Shen Shifu, Hou Caihong, Yan Jinfeng, Ying Zhong, Li Hui, Guo Hongwei,
Wang Yanjun, Hu Xianglong, Mo Guojun, Li Jianxin, Liu Yufei, Chai Hui, Tian Zhongkui, Shen Ranglin, Xiao Le, Chen Yuting, Peng Guowen:
This document was first published in 1983, revised for the first time in:1995, revised for the second time in:2008, and this is the third revision:
microcrystalline graphite
1 Scope
This document specifies the classification and labeling, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of microcrystalline graphite:
This document applies to natural microcrystalline graphite raw ore and microcrystalline graphite products:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB/T 3520 Graphite fineness test method
GB/T 3521 Chemical analysis methods for graphite
GB/T 6679 General principles for sampling of solid chemical products
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 8170 Numerical rounding rules and expression and determination of limit values
GB/T 19077 Laser diffraction method for particle size analysis
JC/T 2571 Determination of trace elements in high-purity graphite
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
An aggregate composed of natural graphite crystals with a particle size less than 1 μm:
Note: Microcrystalline graphite is also called earthy graphite, amorphous graphite or cryptocrystalline graphite: It is gray black or steel gray in color, has metallic luster, has a slippery feel, and is easy to stain hands: It is usually graphitized:
The degree is greater than 55:0%:
3:2
graphitization degreegraphitizationdegree
It measures the perfection of the graphite crystal structure and is an index indicating the regularity of the arrangement of carbon atoms in the graphite structure:
4 Classification and labeling
4:1 Classification
Microcrystalline graphite is divided into microcrystalline graphite mineral products and microcrystalline graphite products according to the processing process: Microcrystalline graphite products are classified into high purity based on fixed carbon content
There are four categories: microcrystalline graphite, high carbon microcrystalline graphite, medium carbon microcrystalline graphite, and low carbon microcrystalline graphite: Its fixed carbon content and classification code are shown in Table 1:
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GB/T 3519-2008
Amorphous graphite
ICS 73.080
Q51
National Standards of People's Republic of China
Replacing GB/T 3519-1995
Microcrystalline graphite
Posted 2008-08-20
2009-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 3519-1995 "microcrystalline graphite." Compared with GB/T 3519-1995, this standard the following modifications.
--- Increased product marking;
--- Removed Tables 1 and 2 of "fineness have special requirements, agreed upon by both parties," the note table;
--- Table 2 "WT" changed to "W";
--- Chapter 5 microcrystalline graphite iron physical and chemical indicators and performance requirements increase WT99.99-45, WT99.99-75, WT99.9-45,
WT99.9-75 four product brands;
--- Chapter 5 5.2.3 added on "other performance indicators to be noted (such as sulfur) agreed by both parties";
--- Increasing the specific method of sampling;
--- Remove 7.5.4 or about the time of product quality inspection disagrees with the results of processing;
--- 8.1 in the microcrystalline graphite Weight "1000kg ± 10.0kg" changed to "1000kg ± 2kg";
--- Chapter 8 product marking content increased product marking; "each batch of products should have a certification" to "bag should have a co-product
Grid certificate. "
The standard proposed by China Building Materials Industry Association.
The standard and non-metallic mineral products by the National Standardization Technical Committee (SAC/TC406) centralized.
This standard is drafted by. Xianyang Institute of non-metallic minerals.
Participated in the drafting of this standard. Xianyang Institute of non-metallic minerals.
The main drafters of this standard. Division Yuhua, Zhang Hanbo.
This standard was first published in 1983, in 1995 conducted the first revision, this is the second amendment.
Microcrystalline graphite
1 Scope
1.1 standard specifies the crystallite graphite definitions, classifications and marks, requirements, test methods, inspection rules, packaging, labeling, transportation and storage.
1.2 This standard applies to natural microcrystalline graphite.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 3520 Test Method graphite fineness
GB/T 3521 Methods for chemical analysis of graphite
3 Terms and Definitions
The following terms and definitions apply to this standard.
Dense aggregates of tiny finger-like natural graphite crystals formed, also known as amorphous graphite or amorphous graphite. Color gray or steel gray, with
Metallic luster, with a smooth feel, easy to dye hand, chemical stability, good heat conductivity, high temperature, acid, corrosion and oxidation. by
Its fine crystal, plasticity, good adhesion.
4 Classification and Marking
4.1 Classification
Microcrystalline graphite iron according to whether the requirements are divided into two categories. Iron claimants as a class, represented by WT; no iron claimants as a class, with W
FIG.
4.2 mark
Products marked by the classification code, fixed carbon content, fineness (μm) and this standard number.
Mark example.
Iron requirements of the carbon content of 96% and the diameter of the mesh 45μm test sieve sieve sieve material after not more than 15% microcrystalline stone
Ink, labeled as. WT96-45-GB/T 3519.
No iron requirements of the carbon content of 90% and in mesh diameter of 45μm after test sieve sieve sieve material is not more than 10% of microcrystalline stone
Ink, labeled as. W90-45-GB/T 3519.
5 Requirements
5.1 Appearance quality
Microcrystalline graphite must not contain visible wood, iron, stone tablets and other debris, the product is not contaminated by other impurities.
5.2 Physical and chemical and performance indicators
5.2.1 microcrystalline graphite iron physicochemical and performance indicators should be consistent with the requirements specified in Table 1.
Microcrystalline graphite physicochemical and performance indicators 5.2.2 without iron should meet the requirements specified in Table 2.
5.2.3 Other performance indicators need to be explained (such as sulfur) agreed by both parties.
6 Test methods
6.1 Appearance quality by visual inspection.
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