This standard specifies the technical requirements, test methods, inspection rules, packaging, storage, transportation, marking and quality certificate of electrolytic manganese. This standard applies to electrolytic manganese used as a manganese additive in the smelting of special steel, chemicals, electronic materials and non-ferrous metal alloys. YB/T 051-2003 Electrolytic Manganese YB/T051-2003 Standard download decompression password: www.bzxz.net

ICS77.100
Ferrous Metallurgical Industry Standard of the People's Republic of China YB/T051—2003
Replaces YB/T051--1993
Electrolytic manganese metal
Published on March 18, 2003
Implementation by the State Economic and Trade Commission of the People's Republic of China on June 1, 2003
This standard replaces GB/T0511993 "Electrolytic manganese metal". Compared with YB/T051-1993, the main changes of this standard are as follows: the scope of application has been expanded to include the "chemical and electronic materials" industries; the referenced documents all adopt the current national standards; the grades and chemical compositions of YB/T051-2003
have been greatly modified, and the DJMn99.5 grade has been cancelled; three new grades DJMnA, DJMnB, and DJMnC have been included: the chemical compositions of the two grades DJMn99.8 and DJMn99.7 in the original standard have been adjusted: - the chemical composition analysis method of Se (≤0.0010%) has been added; - woven bag packaging has been added:
- Appendix A of the original standard has been cancelled:
the informative appendix "Determination of trace selenium by potassium periodate catalytic polarography" (.see Appendix A) has been added. Appendix A of this standard is an informative appendix.
This standard was proposed by the China Iron and Steel Association and is under the jurisdiction of the Metallurgical Industry Information Standards Research Institute. This standard was drafted by: National Chain Industry Technical Committee, Zunyi Xindi Manganese Industry Co., Ltd., Guangxi Dameng Manganese Industry Co., Ltd., Zunyi Tianci Manganese Industry Co., Ltd., Metallurgical Industry Information Standards Research Institute. The main drafters of this standard are: Feng Ziyong, Liu Zhengyuan, Li Weijian, Qing Wen, Zhang Ruixiang. The previous versions of the standards replaced by this standard are: GB/T3418--1982.YB/T051—1993.I
1 Scope
YB/T051—2003
This standard specifies the technical requirements, test methods, inspection rules, packaging, storage and transportation, marking and quality certificates for electrolytic metals. This standard applies to electrolytic manganese used as a manganese element additive for smelting special steel, chemical industry, electronic materials and non-ferrous metal alloys. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version is applicable to this standard. GB/T3650
General provisions for acceptance, packaging, storage, transportation, marking and quality certification of ferroalloysGB/T4010
Taking and preparation of samples for chemical analysis of ferroalloysGB/T8654.1
Method for chemical analysis of metallic manganese
Spectrophotometric determination of iron ore by o-phenanthroline
GB/T8654.33
Method for chemical analysis of metallic manganese
GB/T 8654.5
Method for chemical analysis of metallic manganese
Method for chemical analysis of metallic manganese
GB/T8654.6
GB/T8654.8
GB/T 8654.10
GB/T8654.11
3 Grade designation method
Metallic jade chemical analysis method
Metallic manganese chemical analysis method
Metallic manganese chemical analysis method
Platinum blue photometric method for determination of silicon content
Molybdenum monitoring photometric method for determination of phosphorus content
Hydrazine hydrochloride-iodine method for determination of selenium content
Infrared absorption method for determination of carbon content
Infrared absorption method for determination of sulfur content
Combustion neutralization titration method for determination of sulfur contentbzxz.net
The grade of electrolytic manganese consists of three parts represented by the Chinese phonetic letter (DJ) of electrolytic manganese, the main element Mn, and the quality grade symbol (A, B, C, D) arranged in order.
For example, DJMnA
Among them:
The first letter of the Chinese pinyin of the word "electrolysis" in electrolytic manganese metal: Mn——-the main element of electrolytic manganese metal;
A——quality grade symbol.
4 Technical requirements
Grades and chemical composition
Electrolytic manganese metal is divided into 4 grades according to the different manganese and impurity contents, and its chemical composition shall comply with the provisions of Table 1. Table 1 Grade and chemical composition of electrolytic manganese metal Chemical composition (mass fraction)/%
Not less than
YB/T051-2003
1JMni)
Not less than
Table 1 (continued)
Chemical composition (mass fraction)/%
Note: The manganese content is obtained by subtracting the sum of the impurities listed in the product by the reduction method. That is, w(Mn)-103-[u(C+S+P+Si+Se+Fe) (%). When electrolytic manganese metal is used to produce manganese tetraoxide, K, Na, Ca and Mg should be determined. The specific requirements shall be negotiated separately by the supply and demand parties. 4.1.2
4.1.3 If the purchaser has special requirements for chemical compositions other than those in Table 1, the supply and demand parties may negotiate separately. 4.2 Physical state
Electrolytic manganese metal is silvery white or light brown, but it is not allowed to turn black, and foreign inclusions are not allowed in the product. 4.2.1
Electrolytic manganese metal is delivered in flakes, and the number of pieces less than 3mm×3mm should not exceed 15% of the total weight. 4.2.3
Electrolytic manganese metal is delivered in powder form, and the specific requirements shall be negotiated by the supply and demand parties. Test method
Sampling and sample preparation
The sampling and preparation of samples for chemical analysis of electrolytic manganese metal shall be carried out in accordance with the provisions of GB/T4010. 5.2
Chemical analysis method
The chemical analysis method for electrolytic manganese metal shall comply with the provisions of Table 2. Table 2 Chemical analysis method for electrolytic manganese metal
Inspection rules
Quality inspection and acceptance
Perform in accordance with GB/T8654.8
Analysis method
Perform in accordance with GB/T8654.10 or GB/T8654.11Perform in accordance with GB/T8654.5
According to GB/T8654.3
When wtSe)>0.001%, according to GB/T8654.6: When w(Se)≤0.001%, according to Appendix A or according to the negotiation between the supplier and the buyer
According to GB/T8654.1
The quality inspection and acceptance of electrolytic manganese metal shall be carried out by the supplier's technical supervision department. The buyer has the right to accept its quality according to the regulations. If there is any objection, it should be raised within 45 days of arrival.
6.2 Batch
Electrolytic manganese metal shall be delivered in batches, each batch consists of the same brand, and the delivery batch size shall be agreed upon by the supplier and the buyer. 7
Packaging, storage, transportation, marking and quality certificate7.1 Packaging
The product should be packed in an inner plastic bag and an outer iron drum or an inner plastic bag and an outer woven bag. The net weight of the iron drum is 100kg or 250kg, and the net weight of the woven bag is 1000kg.
Special packaging shall be negotiated by the supply and demand parties. 7.2 Storage and transportation
7.2.1 Storage
YB/T051—2003
Electrolytic manganese metal should be stored indoors according to brand and batch number, avoiding contact with acid, alkali and other chemicals and preventing moisture. 7.2.2 Transportation
Electrolytic manganese metal should be shipped in a covered wagon. If it is shipped in bulk, it should be covered with canvas to prevent water and prevent collision during transportation. 7.3 Marking and quality certificate
The marking and quality certificate of electrolytic manganese metal products shall comply with the provisions of GB/T3650. 3
YB/T051—2003
A.1 Scope
Appendix A
(Informative Appendix)
Determination of trace selenium by potassium periodate catalytic polarography This appendix specifies the principle, reagents and materials, analysis steps, result calculation, and allowable error for the determination of trace selenium by potassium periodate catalytic polarography. This appendix is ​​applicable to the determination of trace selenium in electrolytic manganese metal. Determination range (mass fraction): 0.00005%~0.0015%. A.2 Principle
The sample is decomposed by nitric acid, hydrochloric acid and perchloric acid, and SeOF- is converted into SeS(- in an acidic solution. Citric acid and EDTA are used to eliminate the interference of elements such as Hg, Sh and Sn. Selenium is directly determined by catalytic polarography in the presence of nitrogenous base solution at 10℃. A.3 Reagents and materials
Unless otherwise specified, reagents confirmed as high-grade pure and distilled water or water of equivalent purity should be used in the analysis. A.3.1 Nitric acid (pl. 42 g/mL).
A.3.2 Hydrochloric acid (pl. 19 g/mL).
A.3.3 Perchloric acid (pl.67g/ml).
A.3.4 Sodium sulfite solution (150g/I). A.3.5 Potassium periodate solution (2.5g/T). A.3.6 Mixed solution: 2g citric acid, 3g EDTA, 15g20g ammonium fluoride and 60mL ammonia water (p0.09g/ml) in a 100ml volumetric flask, dilute to scale with water and mix well. A.3.7 Selenium standard solution A: Weigh 0.1000g pure selenium (99.99%) in a 50ml beaker, heat on a water bath, add 20mL nitric acid (A.3.1), dissolve completely, transfer to a 1000ml volumetric flask, dilute to scale with water and mix well. This solution contains 100μg selenium in 1mL. A.3.8 Selenium standard solution B: Pipette 10 ml of the above solution (A.3.7) into a 1000 mL volumetric flask, add 10 mL of nitric acid (A.3.1), dilute to the mark with water, and mix. This solution contains 1 μg of selenium per mL. Repeat the same dilution operation again, and this solution contains 0.01 μg of selenium per mL.
A.4 Analysis steps
A.4.1 Determination
Weigh 0.1000g of sample into a 25mL beaker, add 1mL perchloric acid (A.3.3), 6mL~7mL nitric acid (A.3.1) and 1mL hydrochloric acid (A.3.2), cover with a watch glass, heat to decompose and evaporate and smoke until the volume is about 0.5ml. Remove, cool slightly, wash with about 10mL water into a 25mL colorimetric tube, add 2ml. sodium sulfite solution (A.3.4), shake well, cover and place for 30min, add 5ml. mixed solution (A.3.6) and 2mL potassium periodate solution (A.3.5), dilute to scale with water, and mix well. After leaving for 30min, draw a waveguide derivative polarogram at a starting potential of 0.6V, and find the amount of selenium from the curve. A.4.2 Drawing of working curve
Pipette 0ml, 0.50ml, 1.00ml, 2.00ml, 4.00ml, 8.00ml, 16.00ml of selenium standard solution (A.3.8) into a set of 25ml colorimetric tubes, add 0.5ml of perchloric acid (A.3.3), dilute to about 10ml with water, shake well, add 2ml of sodium sulfite solution (A.3.4), mix well, and then perform polarographic determination according to A.4.1. Draw the working curve with the amount of selenium as the horizontal axis and the derivative polarographic value as the vertical axis. A.5 Calculation of results
Calculate the selenium content (mass fraction) in the sample according to formula (A.1): Where:
(Se)(%) = ml /m2 × 100
The amount of selenium found from the working curve, in grams (g); m
The amount of sample, in grams (\):
A.6 Allowable difference
The difference in analysis results between laboratories should not be greater than the allowable difference listed in Table A.1. Table A.1 Allowable difference
Selenium content (mass fraction)
0. 000 C5 -~ 0. 000 2C
≥>0. 000 20 ~ 0, 000 5C
>0. 000 50 ~0. 001 0
>0.001 0~0.001 5
Test report
The test report shall include the following:
Information such as identification of the test material, laboratory and analysis date; degree of compliance with the provisions of this method;
Analysis results and their expression;
Abnormal phenomena observed during the determination;
Allowable difference (mass fraction)
0. 000 02
0. 000 05
Operations that may affect the analysis results and are not included in this standard, or low-selection operations, YB/T 051—2003
.(A.1)
YB/T051-2003
Ferrous Metallurgy of the People's Republic of China
Industry Standard
YB/T051--2003
Published by China Standards Press
No. 16, Sanlihe North Street, Fuxingmenwai, Beijing
Postal Code: 100045
Tel: 6852394668517548
Printed by China Standards Press, Qinhuangdao Printing Factory, and issued by Xinhua Bookstore, Beijing Distribution Office
Open This book is 880×12301/16
First edition in September 2003
Sold by Xinhua Bookstores everywhere
Printing sheet 3/4
Word count 12,000 words
First printing in September 2003
Print runs 1-1000
Book number: 155066·2-15311
Price 10.00 yuan
Website www.bzcbs.com
Copyright reserved
Infringements will be investigated
Report phone number: (010) 685335331)
YB/T051-2003
Ferrous Metallurgy of the People's Republic of China
Industry Standard
YB/T051--2003
Published by China Standards Press
No. 16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal Code: 100045
Tel: 6852394668517548
Printed by China Standards Press, Qinhuangdao Printing Factory, and issued by Beijing Publishing House of Xinhua Bookstore
Book size 880×1230 1/16
First edition September 2003
Sold by Xinhua Bookstores everywhere
Print sheet 3/4
Word count 12,000 words
First printing September 2003
Print runs 1-1000
Book number: 155066·2-15311
Price 10.00 yuan
Website www.bzcbs.com
Copyright reserved
Infringements will be investigated
Report phone number: (010) 685335331)
YB/T051-2003
Ferrous Metallurgy of the People's Republic of China
Industry Standard
YB/T051--2003
Published by China Standards Press
No. 16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal Code: 100045
Tel: 6852394668517548
Printed by China Standards Press, Qinhuangdao Printing Factory, and issued by Beijing Publishing House of Xinhua Bookstore
Book size 880×1230 1/16
First edition September 2003
Sold by Xinhua Bookstores everywhere
Print sheet 3/4
Word count 12,000 words
First printing September 2003
Print runs 1-1000
Book number: 155066·2-15311
Price 10.00 yuan
Website www.bzcbs.com
Copyright reserved
Infringements will be investigated
Report phone number: (010) 68533533
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.