YS/T 921: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 921-2025 | English | RFQ |
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3 days [Need to translate]
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Frosted Copper
| Valid |
YS/T 921-2025
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| YS/T 921-2013 | English | 159 |
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Copper matte
| Valid |
YS/T 921-2013
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Basic data | Standard ID | YS/T 921-2025 (YS/T921-2025) | | Description (Translated English) | Frosted Copper | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H62 | | Classification of International Standard | 77.150.30 | | Date of Issue | 2025-04-10 | | Date of Implementation | 2025-11-01 | | Older Standard (superseded by this standard) | YS/T 921-2013 | | Issuing agency(ies) | Ministry of Industry and Information Technology | YS/T 921-2013: Copper matte---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Copper matte
ICS 77.150.30
H62
People's Republic of China Nonferrous Metals Industry Standard
Matte
Issued on. 2013-10-17
2014-03-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized.
This standard is drafted by. Daye Nonferrous Metals Co., Ltd., Yanggu Xiangguang Copper Limited.
Participated in the drafting of this standard. Yunnan Copper Co., Ltd., Zhongtiaoshan Nonferrous Metals Group Co., Ltd.
The main drafters of this standard. Zhang Zelin, Hu Xinping, Zhang Yonghong, Zhou Songlin, Yan Hong, Zhang Guanghua, Hong Xiongwen, Xu Song, Chen Yingwu,
WANG Cheng-guo, Wang Min, Wangyou Fang, Wu Zhiqing, Li Jing.
Matte
1 Scope
This standard specifies the matte (also called matte) requirements, test methods, inspection rules, packaging, quality forecasts or single contract (or purchase order), etc.
content.
This standard applies to the cuprous sulfide and ferrous sulfide consisting of copper between 15% to 70% of the intermediate product obtained by melting, for
Thermal copper use.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 2007.6 bulk minerals sampling and sample preparation Determination of Water --- General heat drying method
GB/T 8170 repair value expressed about the rules and limit values and judgment
3 Requirements
3.1 Categories
Matte chemical composition into a product, two products, three products.
3.2 Chemical composition
3.2.1 matte chemical composition shall comply with the requirements of Table 1.
Table 1 chemical composition of copper matte
grade
Chemical composition (mass fraction) /%
Copper content
Impurity content of not more than
Pb Zn As MgO Sb Bi
A > 5032 0.15 1 0.3
Two ≥35 ~ 50 4 3 0.3 2 0.4
Three ≥15 ~ 35 8 4 0.5 3 0.5
Note. both supply and demand for such products when there are special requirements, negotiated by both parties and specified in the contract.
3.2.2 bulk matte moisture content of not more than 3%; powdered matte moisture content of not more than 8%.
3.3 Physical Specifications
3.3.1 matte Press physical specifications are divided into two forms lumps and powder.
3.3.2 bulk matte particle size should be between 3mm ~ 150mm, powdered matte size not greater than 3mm.
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