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GB/T 13587-2020

Chinese Standard: 'GB/T 13587-2020'
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BASIC DATA
Standard ID GB/T 13587-2020 (GB/T13587-2020)
Description (Translated English) Scraps of copper and copper alloy
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H62
Classification of International Standard 77.150.30
Word Count Estimation 18,111
Date of Issue 2020-09-29
Date of Implementation 2021-08-01
Older Standard (superseded by this standard) GB/T 13587-2006
Drafting Organization Guangdong Xingqi Metal Co., Ltd., Anhui Xinke Copper Co., Ltd., Foshan Huahong Copper Tube Co., Ltd., Ningbo Changzhen Copper Co., Ltd., Ningbo Jintian Copper (Group) Co., Ltd., Anhui Chujiang Technology New Materials Co., Ltd. Co., Ltd., Ningbo Xingye Shengtai Group Co., Ltd., Gezhouba Zhanci (Ningbo) Metal Industry Co., Ltd.
Administrative Organization National Nonferrous Metal Standardization Technical Committee (SAC/TC 243)
Regulation (derived from) National Standard Announcement No. 20 of 2020
Proposing organization China Nonferrous Metals Industry Association
Issuing agency(ies) State Administration for Market Regulation, National Standardization Administration

GB/T 13587-2020
Scraps of copper and copper alloy
ICS 77.150.30
H62
National Standards of People's Republic of China
Replace GB/T 13587-2006
Copper and copper alloy scrap
2020-09-29 released
2021-08-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Preface
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 13587-2006 "Copper and Copper Alloy Scraps", compared with GB/T 13587-2006, except for editorial changes
The main technical changes are as follows.
---Added terms and definitions (see Chapter 3);
---Modified the classification of copper scrap. from "category, group, name" to "category, name" (see Chapter 4,.2006 edition of the third
chapter);
---Modified the category of copper scrap. from "pure copper scrap, copper alloy scrap, waste water tank, new copper and its alloy scrap, scrap, chip, strip
The eight categories such as “wire and cable, copper-containing slag” are adjusted to “pure copper scrap, brass scrap, other copper alloy scrap, water tank copper scrap,
Eight categories including sliced copper waste, waste wires and cables, composite copper waste, and copper rice waste (see Chapter 4, Chapter 3 of the.2006 edition);
---Modified the classification method of "quality and shape", modified to "apparent characteristics, chemical composition, metal recovery rate" and other technical requirements
Distinguish different levels (see 5.1, 5.4, Table 1 in the.2006 edition);
---Added technical requirements such as the chemical composition and metal recovery rate of copper scrap (see 5.4);
---Modified the test methods, inspection rules, signs, packaging, transportation and storage, etc. (see Chapter 6, Chapter 7, Chapter 8,
Chapter 6, Chapter 7, Chapter 8 of the.2006 edition);
---Deleted the provisions of the quality certificate (see 7.4 in the.2006 edition);
---The content of the purchase order (or contract) has been added (see Chapter 9);
--- Added a normative appendix "The preparation of chemical composition samples and the detection method of metal recovery" (see Appendix B).
This standard was proposed by China Nonferrous Metals Industry Association.
This standard is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243).
Drafting organizations of this standard. Guangdong Xingqi Metal Co., Ltd., Anhui Xinke Copper Co., Ltd., Foshan Huahong Copper Tube Co., Ltd., Ningbo
Changzhen Copper Industry Co., Ltd., Ningbo Jintian Copper (Group) Co., Ltd., Anhui Chujiang Technology New Materials Co., Ltd., Ningbo Xingye
Shengtai Group Co., Ltd., Gezhouba Zhanci (Ningbo) Metal Industry Co., Ltd.
The main drafters of this standard. Chen Xiaozhu, Jiang Jie, Guo Shumei, Chao Guohui, Fan Jinjin, Mao Yaodong, Yuan Hefeng, Yang Tao, Li Jiajun, Wang Hailong,
Yang Chuntai, Qiu Haibin, Dai Chengjun, Jiang Huile, Zheng Juliang, Pan Lifeng.
The previous versions of the standard replaced by this standard are as follows.
---GB/T 13587-1992, GB/T 13587-2006.
Copper and copper alloy scrap
1 Scope
This standard specifies the classification, technical requirements, test methods, inspection rules, markings, packaging of copper and copper alloy scrap (hereinafter referred to as copper scrap)
Installation, transportation, storage and order form (or contract) content, etc.
This standard applies to copper and copper alloy scrap.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 5121 (all parts) Methods for chemical analysis of copper and copper alloys
GB/T 8170 Numerical rounding rules and the expression and determination of limit values
GB/T 27683 Free-cutting copper alloy cutting waste recycling specification
YS/T 482 Copper and copper alloy analysis method photoelectric emission spectrometry
YS/T 483 Copper and copper alloy analysis method X-ray fluorescence spectrometry (wavelength dispersion type)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Scraps of copper and copper alloy scraps of copper and copper alloys
Containing copper and copper alloy components that are produced during the production process, or lose the original purpose or use function during consumption and use, can be
Materials for recycling and reuse by smelting companies or processing and manufacturing companies.
3.2
Foreignmaterial
Non-metallic substances mixed into copper scrap during production, collection, packaging and transportation.
Note. Including wood waste, waste paper, waste plastic, waste rubber, waste glass, rocks and powders (dust, sludge, crystalline salt, metal oxidation
Materials, fiber powder, etc.) and other materials, but excluding packaging and other materials used during transportation.
3.3
Non-coppermetal
Metal substances other than copper and copper alloys mixed into copper scrap during production, collection, packaging and transportation.
Note. Generally include free iron, aluminum and aluminum alloy, zinc and zinc alloy, etc.
3.4
Platingmaterial
The material plated on the surface of copper scrap.
Note. Generally include nickel, tin, zinc, aluminum, chromium, etc.
3.5
Moisture
In the process of production, collection, packaging, storage and transportation, the water and emulsion attached to the copper waste.
6 Test method
6.1 Appearance characteristics
The apparent characteristics of copper scrap are inspected by sensory organs; the apparent characteristics of copper scrap briquettes should be disassembled before inspection, and then sensory
test.
6.2 Radioactive contaminants
The radioactive contaminants of copper waste can be inspected with reference to Appendix A.
6.3 Hazardous substances
Hazardous substances in copper scrap are inspected by the senses.
6.4 Chemical composition
The chemical composition analysis method is carried out in accordance with the regulations of GB/T 5121 (all parts), YS/T 482 or YS/T 483.Arbitration inspection,
According to the provisions of GB/T 5121 (all parts).
6.5 Metal recovery rate
The metal recovery rate of copper scrap is estimated using senses. When there is disagreement between the supplier and the buyer, the inspection shall be carried out in accordance with the provisions of Appendix B.
7 Inspection rules
7.1 Inspection process
The copper scrap specified in this standard can be inspected by referring to the appendix C process.
7.2 Inspection and acceptance
The purchaser shall inspect the copper scrap received according to this standard. If the inspection result does not conform to the provisions of this standard and the purchase order (or contract),
It should be submitted to the supplier in writing, and the two parties negotiated to resolve it. If arbitration is required, a third party recognized by the supplier and the buyer can be entrusted to conduct it.
7.3 Batch
Copper scraps should be submitted for inspection in batches, and each batch should be composed of copper scraps of the same category, name and level, and the batch weight should not be greater than
50t.
7.4 Inspection items
Each batch of copper scrap shall be inspected for its apparent characteristics, radioactive pollutants, hazardous substances, chemical composition, and metal recovery rate.
7.5 Sampling
The sampling requirements for copper scrap are shown in Table 4.
7.6 Judgment of inspection results
7.6.1 The value of the test result shall be rounded according to the provisions of GB/T 8170, and the rounded value comparison method shall be used for judgment.
7.6.2 If the inspection results meet the requirements of this standard, the batch of copper scrap is determined to be qualified.
7.6.3 When any of the apparent characteristics, radioactive pollutants, and hazardous substances inspection results of copper scraps do not meet the requirements, the batch of copper scraps is judged
Does not meet the requirements of this standard.
7.6.4 When any of the inspection results of chemical composition, metal recovery rate, etc. are unqualified, another double sample should be taken from the batch of copper scraps.
Repeat the test for the unqualified item, and the repeated test result is qualified, and the batch of copper scraps is judged to be qualified, otherwise the batch of copper scraps is judged to not meet this standard
It is stipulated that the supply and demand parties shall negotiate and resolve.
8 Marking, packaging, transportation and storage
8.1 Logo
Each batch of copper scrap should be accompanied by a label indicating.
a) The name of the supplier;
b) Name and grade of copper scrap (if any);
c) batch number;
d) Total weight;
e) Net weight;
f) This standard number.
8.2 Packaging
Copper scrap can be supplied in bulk, packaged or briquetted. The scrap should be packaged, and the packaging method, size and weight shall be negotiated between the supplier and the buyer
determine.
8.3 Transportation and storage
8.3.1 During transportation, copper scraps of different types and levels should not be mixed.
8.3.2 The transportation and storage of copper waste should have rain and snow protection facilities.
9 Purchase order (or contract) content
The purchase order (or contract) for copper scrap listed in this standard shall include the following.
a) The name of the supplier;
b) Name and grade of copper scrap (if any);
c) weight;
d) This standard number.
Appendix A
(Informative appendix)
Radioactive contamination inspection method
A.1 Inspection instrument
The inspection instrument should meet the requirements of GB 18871, GB/T 12162.3 and GB/T 5202.
A.2 External radiation penetration radiation dose rate measurement
A.2.1 Measurement of natural environmental radiation background
A.2.1.1 Before measuring the external radiation penetration radiation dose rate, the local natural environmental radiation background value should be measured and determined.
A.2.1.2 Select 3 to 5 points on a flat open ground without radioactive pollution that can represent the local normal natural radiation background state (can be used as
Is a fixed survey point) as a measuring point.
A.2.1.3 Place the measuring probe of the measuring instrument at a height of 1m from the ground above the measuring point, and determine the external radiation penetration radiation dose rate, every 10s
Read the measured value once, take the average of 10 readings as the measured value of this point, and take the arithmetic average of the measured values of each measuring point as the normal
The average value of natural radiation.
A.2.2 Tour inspection
A.2.2.1 The copper waste should be inspected for radioactive contamination. During the inspection, the measuring instrument should be as close as possible to the surface or
The surface of the container, car body, silo body, etc. loaded with copper scraps is roving inspection on the surface of the measured object.
A.2.2.2 When it is found that the radioactivity has obviously exceeded the management limit of 3 test indicators during the roving inspection, it is judged as unqualified. Have found
When the radioactive pollution exceeds the management limits of the 3 detection indicators, no sub-inspection or selection will be performed.
A.2.3 Distribution of test points
A.2.3.1 For cars, trains, containers, ships or piles of bulk copper scraps that are loaded and transported copper scraps, the points can be arranged according to the grid method (see
Figure A.1). The direct measurement method is used to detect the external radiation penetration radiation dose rate and surface contamination.
Figure A.1 Schematic diagram of radioactive contamination measurement points
A.2.3.2 Cars are arranged according to the longitudinal 2 lines and horizontal 3 lines of the car, and the points are arranged and measured on the 6 intersections of the grid.
A.2.3.3 Trains and containers shall be measured by the grid method in vertical and horizontal directions, but no less than 10 points.
A.2.3.4 According to the size of the deck, grids are arranged on the front, center, and rear 3 lines and the left, center, and right 3 lines of the deck, and points are placed on the intersections with the grid.
Measure, but no less than 12 points.
A.2.4 Measurement
A.2.4.1 Perform standardized operations in accordance with the requirements of the instrument manual.
A.2.4.2 Place the probe of the instrument as close as possible to the surface of the measured object (the distance between the probe of the general measuring instrument and the measured object is not greater than
300mm).
A.2.4.3 Start measuring and reading after the display value of the instrument is stable, reading once every 10s, and take the average of the 10 readings as the measuring point
The measured value of the radiation dose rate through the external exposure.
Note. For the inspection of tubes, containers and other containment bodies, special attention should be paid to the α and β surface contamination that may not be easily detected from the outside due to shielding.
A.2.5 Efficiency factor of measuring instrument
A.2.5.1 In-service measuring instruments should use the calibration source for tracking calibration (for example, once in the morning, midnight, and evening).
A.2.5.2 Place the instrument probe on the non-polluting dry ground, read once every 10s after stabilization, and take the average of the 10 readings D1
It is the background value of natural environment radiation.
A.2.5.3 Adjust the gear of the instrument according to the net source value (R) of the calibration source, put the calibration source on the probe and stand it in place, and then read the same
10 times, the average value of the calibration source is measured Ḋ2.
A.2.5.4 Calculate the efficiency factor Kŋ of the measuring instrument according to formula (A.1).
Kŋ=
Ḋ2-Ḋ1
(A.1)
Where.
Kŋ---The efficiency factor of the measuring instrument;
R --- the net source value of the calibration source, the unit is microGy per hour (μGy/h);
Ḋ2 ---The average of 10 readings of the calibration source, in microGy per hour (μGy/h);
Ḋ1 --- Natural environmental radiation background value, in microGy per hour (μGy/h).
A.2.6 Correction of measured values
Calculate the corrected external exposure penetrating radiation dose rate according to formula (A.2) Ḋ.
Ḋ =K1·Kŋ·̇Dc (A.2)
Where.
Ḋ --- Corrected external exposure penetrating radiation dose rate;
K1 --- the scale factor of the measuring instrument (given by the instrument's calibration certificate);
Kη --- the efficiency factor of the measuring instrument;
Ḋc --- The reading of the measured value of the measuring instrument, in microGy per hour (μGy/h).
A.3 α, β surface contamination inspection
A.3.1 Testing requirements
Generally, the patrol and spot measurement of the surface pollution level of α and β should be carried out at the same time as the measurement of the external radiation penetration radiation dose rate.
The patrol survey and the distribution survey of the project can be carried out separately.
A.3.2 Test point layout
For the detection of α and β surface contamination levels, the test points should be arranged according to A.2.3, and the measurement area should be greater than 300cm2.
A.3.3 Efficiency measurement of α surface contamination measuring instrument
A.3.3.1 Use the α surface pollution measuring instrument to measure the count N0,α of the natural environment for 10 minutes.
A.3.3.2 Test instrument calibration source 5min, get count N1, α.
A.3.3.3 Reverse the probe of the instrument by 180° and measure it for 5 minutes to obtain the count N2,α of the calibration source (considering the unevenness of the plane source).
A.3.3.4 Calculate the efficiency factor η4π(α) of the instrument according to formula (A.3).
η4π(α)=
(N1,α N2,α)-N0,α
10Aα ×
100% (A.3)
Where.
η4π(α)---the efficiency factor of the instrument;
N1,α---the count measured in the previous 5 minutes of the calibration source;
N2,α---the count measured after the instrument probe is reversed 180°;
N0,α---the background radiation count of the instrument;
Aα ---α correction source (plane source) activity value.
A.3.4 Efficiency measurement of β surface contamination measuring instrument
A.3.4.1 Use the β surface pollution measuring instrument to measure the natural environmental radiation background 4min count N0, β.
A.3.4.2 Determine the calibration source for 2 minutes, and get count N1, β.
A.3.4.3 Reverse the instrument probe 180°, measure the count N2, β of the calibration source for 2 minutes (considering the unevenness of the plane source).
A.3.4.4 Calculate the efficiency factor η4π(β) of the instrument according to formula (A.4).
η4π(β)=
(N1,β N2,β)-N0,β
4Aβ
×100% (A.4)
Where.
η4π(β)---the efficiency factor of the instrument;
N1, β---the count measured in the previous 2 minutes of the calibration source;
N2, β---the count measured 2 minutes after the instrument probe is reversed 180°;
N0, β---the background radiation count of the instrument;
Aβ ---β correction source (plane source) activity value.
A.3.5 α, β surface pollution level measurement
A.3.5.1 α and β surface contamination The probe of the instrument is as close as possible to the surface of the object to be measured (the distance between the instrument and the surface of the object to be measured shall not be greater than 20mm
And 50mm), the measurement area should be greater than 300cm2.
A.3.5.2 Move the instrument at a speed not greater than 100mm·s-1 to detect the level of contamination on the surface of α and β.
A.3.5.3 Each test point should be read 2 to 3 times, each time interval of 1min and read its cumulative count value N.
A.3.5.4 Calculate α and β surface pollution level C (α/β) according to formula (A.5).
C(α/β)=
η4π(α/β)·S·t
(A.5)
Where.
C(α/β) ---α or β (one of them) surface pollution level, the unit is Bq/cm2;
N --- the counting of detection instruments;
η4π(α/β)---The efficiency factor of α or β surface contamination measuring instrument;
S ---The area of the detection window of the detection instrument, in square centimeters (cm2);
t ---Measurement time, in seconds (s).
Appendix B
(Normative appendix)
Preparation of chemical composition sample and detection method of metal recovery rate
B.1 Method summary
Take a sample of copper waste, after pretreatment, put it into the melting furnace, fully melt, clear the slag, prepare a chemical composition sample, and continue to wait for the melt to solidify
Solid, to produce ingots. The ratio of the weight of the obtained ingot and the weight of the chemical composition sample to the weight of the sample is the metal recovery rate.
B.2 Reagents or materials
B.2.1 Casting covering agent (such as charcoal, graphite flake).
B.2.2 Flux (such as borax, salt).
B.3 Instruments
B.3.1 Electric melting furnace.
B.3.2 Graphite crucible.
B.3.3 Mould.
B.3.4 Electronic scale (precision 0.1kg).
B.4 Test procedure
B.4.1 Sampling
In each inspection lot, take a representative sample with a weight of not less than 10kg.
B.4.2 Weighing
Weigh, and record the sample weight m0.
B.4.3 Pretreatment
Pick out the inclusions and non-copper metals mixed in the sample as much as possible.
B.4.4 Melting, heat preservation
Put the pretreated sample into the melting electric furnace (can not be added in a single time, you can continue to add it during the melting process), and heat until the sample is full
After melting, keep for 5min. Appropriate amount of covering agent and co-solvent should be added during the melting process.
B.4.5 Removal of impurities
After the sample is fully melted, stir and remove the slag.
B.4.6 Preparation of chemical composition samples and ingots
Take the removed melt and pour it into the chemical composition sample mold to prepare the chemical composition sample. After the sample is cooled to room temperature, weigh and record
Sample weight m1; after all the remaining melt is poured or cooled to room temperature with the furnace, an ingot is obtained, the dust and slag on the surface of the ingot are removed, weighed and
Record the ingot weight m2.
B.5 Test data processing
Calculate the metal recovery rate WH of this batch of copper scrap according to formula (B.1).
WH=
m1 m2
m0 ×
100% (B.1)
Where.
WH --- metal recovery rate;
m1 --- the weight of the chemical composition sample, in kilograms (kg);
m2 --- the weight of the ingot, in kilograms (kg);
m0 ---The weight of the sample in kilograms (kg).
Related standard: GB/T 20928-2020    GB/T 26017-2020
Related PDF sample: GB/T 11091-2014    GB/T 17791-2017