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GB/T 3460-2017 (GBT 3460-2017)

Chinese Standard: 'GB/T 3460-2017'
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GB/T 3460-2017English179 Add to Cart Days<=3 Ammonium molybdate GB/T 3460-2017 Valid GB/T 3460-2017
GB/T 3460-2017Chinese14 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]

   

BASIC DATA
Standard ID GB/T 3460-2017 (GB/T3460-2017)
Description (Translated English) Ammonium molybdate
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H63
Classification of International Standard 77.150.99
Word Count Estimation 10,170
Date of Issue 2017-09-29
Date of Implementation 2018-04-01
Drafting Organization Jinduicheng Molybdenum Co., Ltd., Zhuzhou Cemented Carbide Group Co., Ltd., Non-ferrous Metal Technology Economic Research Institute
Administrative Organization National Nonferrous Metals Standardization Technical Committee (SAC/TC 243)
Proposing organization China Nonferrous Metals Industry Association
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of PRC; China National Standardization Administration

GB/T 3460-2017
Ammonium molybdate
ICS 77.150.99
H63
National Standards of People's Republic of China
Replacing GB/T 3460-2007
Ammonium molybdate
2017-09-29 Posted
2018-04-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 3460-2007 "ammonium molybdate."
This standard compared with GB/T 3460-2007, the following major changes.
--- Revised product classification requirements;
--- Modify the scope of molybdenum content;
--- Increasing the requirements of Cr, Ti and other elements;
--- Adjust the requirements of Ca, Mg, Na, K, W and other impurity elements;
--- Revised product use requirements;
--- Modify the loose density of the product;
--- Increase the Fischer particle size of the technical indicators;
--- Modify the product screening requirements;
--- Increasing the product sample preparation requirements;
--- Modify the product shelf life requirements.
This standard is proposed by China Nonferrous Metals Industry Association.
This standard by the National Standardization Technical Committee non-ferrous metals centralized (SAC/TC243).
This standard was drafted unit. Jinduicheng Molybdenum Co., Ltd., Zhuzhou Cemented Carbide Group Co., Ltd., non-ferrous metal technology economic research
Institute.
The main drafters of this standard. Fan Jianjun, Wang Guo Liang, Lin Bai Chao, Xu Jianchang, Ma Zhijun, Yang Yan, Liu Yanbo, Liu Tiemei, Wu Yanhua.
This standard replaces the standards previously issued as.
--- GB/T 3460-1982, GB/T 3460-2007.
Ammonium molybdate
1 Scope
This standard specifies the requirements of two ammonium molybdate, ammonium molybdate and ammonium heptamolybdate, test methods, inspection rules and signs, packaging, transportation, storage
Deposit, quality certificate and contract (or purchase order) content.
This standard applies to various methods of production of ammonium molybdate.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 1479 loose metal powder Determination of bulk density - Part 1. Funnel method
GB/T 3249 Methods for determination of Fischer-Tropsch particle size of metals and their compounds
GB/T 4325 (all parts) molybdenum chemical analysis methods
GB/T 5314 powder metallurgy powder sampling method
YS/T 555.1 Methods for chemical analysis of molybdenum concentrates - Determination of molybdenum content - Lead molybdate gravimetric method
3 requirements
3.1 product classification
According to the chemical composition and use of different products, ammonium molybdate into MSA-0, MSA-1, MSA-2, MSA-3 four brands. press
Physical performance is divided into specifications 1, size 2.
3.2 chemical composition
The chemical composition of the grades should be consistent with the provisions of Table 1.
Table 1 ammonium molybdate chemical composition% (mass fraction)
Product Grade MSA-0 MSA-1 MSA-2 MSA-3
Molybdenum content of not less than 56.45 ± 0.40 Ammonium molybdate, Ammonium tetramolybdate ≥56.00, Ammonium heptamolybdate 54.35 ± 0.40
K 0.0060 0.0100 0.0150 0.0180
Na 0.0005 0.0008 0.0010 0.0015
Fe 0.0005 0.0005 0.0006 0.0010
Al 0.0005 0.0005 0.0006 0.0008
Si 0.0005 0.0005 0.0005 0.0010
Sn 0.0005 0.0005 0.0005 0.0010
Pb 0.0003 0.0005 0.0005 0.0005
P 0.0005 0.0005 0.0005 0.0010
Related standard: GB/T 3457-2013    GB/T 4182-2017
Related PDF sample: GB/T 3458-2006    GB/T 4325.5-2013