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YS/T 394-2007: Tantalum concentrate
Status: Valid YS/T 394: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 394-2007 | English | 199 |
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3 days [Need to translate]
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Tantalum concentrate
| Valid |
YS/T 394-2007
|
| YS/T 394-1994 | English | 199 |
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2 days [Need to translate]
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(Tantalum concentrate)
| Obsolete |
YS/T 394-1994
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PDF similar to YS/T 394-2007
Basic data | Standard ID | YS/T 394-2007 (YS/T394-2007) | | Description (Translated English) | Tantalum concentrate | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | D43 | | Classification of International Standard | 73.060 | | Word Count Estimation | 6,686 | | Date of Issue | 2007-11-14 | | Date of Implementation | 2008-05-01 | | Older Standard (superseded by this standard) | YS/T 394-1994 | | Quoted Standard | GB/T 1480; GB/T 11713; GB 20664; YS/T 358.1; YS/T 358.2; YS/T 358.3; YS/T 358.4; YS/T 358.5; YS/T 358.6; YS/T 358.7; YS/T 358.8; YS/T 358.9; YS/T 358.10; YS/T 358.11; YS/T 358.12 | | Regulation (derived from) | NDRC Notice No. 77 of 2007 | | Issuing agency(ies) | National Development and Reform Commission | | Summary | This standard specifies the tantalum concentrate requirements, test methods, test rules, marking, packaging, transportation, storage and purchase order (or contract) content. This standard applies to mineral enrichment obtained by tantalum concentrate. Products for the extraction and manufacture of tantalum and niobium oxide alloy used. | YS/T 394-2007: Tantalum concentrate---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.
Tantalum concentrate
ICS 73.060
D43
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 394-1994
Tantalum Concentrate
Posted 2007-11-14
2008-05-01 implementation
National Development and Reform Commission issued
Foreword
Instead of the standard YS/T 394-1994 "tantalum concentrate."
Compared with this standard YS/T 394-1994 main changes are as follows.
--- Of tantalum concentrate grade is adjusted to four;
--- Chemical composition of each grade product made appropriate adjustments.
This standard by the National Standardization Technical Committee of non-ferrous metals and centralized.
This standard by the National Standardization Technical Committee is responsible for interpretation of non-ferrous metals.
This standard by the Yichun Ta-Nb ore responsible for drafting.
This standard by the Jiujiang non-ferrous metal smelters participated in the drafting.
The main drafters of this standard. Peng Yonghua, Liu Lixin, Jiang Xiaopeng, Zhang Hao, Guo Wenping.
This standard replaces the standards previously issued as follows.
--- YB830-1975, YB5000-1987, YS/T 394-1994.
Tantalum Concentrate
1 Scope
This standard specifies the tantalum concentrate requirements, test methods, inspection rules, marking, packaging, transportation, storage and purchase order (or contract) content.
This standard applies to tantalum concentrate obtained by beneficiation enrichment. Products for the extraction of tantalum oxide and niobium alloys with manufacturing.
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 1480 Determination of particle size metal powder dry sieving
GB/T 11713 semiconductor γ γ spectrometer analysis of low specific activity radioactive sample standard methods
GB 20664 non-ferrous minerals natural radioactivity limits
YS/T 358 (all parts), iron, tantalum, niobium chemical analysis of iron ore
3 Requirements
3.1 Categories
Product chemical composition is divided into four grades, with grade ore in the calculation.
3.2 Chemical composition
Chemical composition of each grade products should meet the requirements in Table 1.
Table 1%
grade
Chemical composition (mass fraction)
Ta2O5 + Nb2O5
not less than
Ta2O5
not less than
Impurity content of not more than
TiO2 SiO2 WO3
First Grade 5032672
Second Grade 4428672
Grade III 35,237,132
Four products 30,207,182
Note 1. The product U3O8, ThO2 content should provide measured data;
Note 2. The chemical composition of the product there are other requirements, the two sides negotiated by supply and demand.
3.3 size
Particle size of not more than 2mm, which is greater than 0.8mm no more than 10%.
3.4 appearance quality
Products shall not be mixed foreign inclusions.
3.5 Natural Radioactivity
Products natural radionuclides should meet the requirements of GB 20664.
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