GB/T 8704.3-2009 English PDFUS$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 8704.3-2009: Ferrovanadium -- Determination of sulfur content -- The infrared absorption method and the combustion-neutralization titration method Status: Valid GB/T 8704.3: Historical versions
Basic dataStandard ID: GB/T 8704.3-2009 (GB/T8704.3-2009)Description (Translated English): Ferrovanadium -- Determination of sulfur content -- The infrared absorption method and the combustion-neutralization titration method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: H11 Classification of International Standard: 77.100 Word Count Estimation: 9,997 Date of Issue: 2009-07-15 Date of Implementation: 2010-04-01 Older Standard (superseded by this standard): GB/T 8704.3-1997 Quoted Standard: GB/T 4010 Regulation (derived from): National Standard Approval Announcement 2009 No.9 (Total No.149) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the use of infrared absorption method and combustion and titration of vanadium iron sulfur content. This section applies to the determination of vanadium iron sulfur content. Measuring range (mass fraction): from 0. 005% to 0. 120%. GB/T 8704.3-2009: Ferrovanadium -- Determination of sulfur content -- The infrared absorption method and the combustion-neutralization titration method---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. Ferrovanadium.Determination of sulfur content.The infrared absorption method and the combustion-neutralization titration method ICS 77.100 H11 National Standards of People's Republic of China Replacing GB/T 8704.3-1997 Determination of vanadium iron sulfur content Infrared absorption method and the combustion - neutralization titration method Posted 2009-07-15 2010-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis Part replaces GB/T 8704.3-1997 "determination of sulfur content for chemical analysis of ferrovanadium The infrared absorption method and combustion - neutralization titration method." This portion of the GB/T 8704.3-1997 comparison, the main changes are. --- The method of one of the sample weight 0.500g, 0.200g two tranches adjusted to a file 0.200g; --- The method of one of the iron from the flux amount was adjusted to 0.50g 0.20g; --- The method of one of the first, second gear allows for the consolidation difference sulfur content of 0.005% to 0.015%, 0.002% allowable difference; --- The second method of determination by the scope of < 0.120% to 0.005% and 0.120%. This part is proposed by the China Iron and Steel Association. This part of pig iron and ferroalloy by the National Standardization Technical Committee. This section is drafted. Sichuan Investment Emei Ferroalloy (Group) Co., Ltd. The main drafters of this section. should Tang Hua, Fang Yan, Xuexiu Ping. This part of the standard replaces the previous editions are. --- GB/T 8704.3-1988, GB/T 8704.4-1988, GB/T 8704.3-1997. Determination of vanadium iron sulfur content Infrared absorption method and the combustion - neutralization titration method Warning --- Use this section shall be a person experiences regular laboratory work. This section does not point out all possible security asked question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.1 ScopeThis section GB/T 8704 regulations using infrared absorption method and combustion - neutralization titration method for the determination of vanadium iron sulfur content. This section applies to the determination of vanadium iron sulfur content. Measurement range (mass fraction). 0.005% and 0.120%.2 Normative referencesThe following documents contain provisions cited by GB/T 8704 to the present, constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 4010 alloy chemical analysis and preparation of samples 3 Method One. The infrared absorption method 3.1 Principle The sample is heated in a high frequency induction furnace combustion oxygen flow generated by the oxygen contained sulfur dioxide infrared analyzer to the measuring chamber dioxide A sulfur absorbing specific wavelengths of infrared energy, which is proportional to the absorbed energy and the concentration of sulfur, based on the detection unit accepts the change in energy can be measured sulfur content. 3.2 Reagents and materials 3.2.1 acetone. sulfur content of the residue after evaporation is less than 0.0005%. 3.2.2 magnesium perchlorate, anhydrous, granular. 3.2.3 asbestos caustic soda, granular. 3.2.4 glass wool. 3.2.5 tungsten particles. sulfur content of less than 0.0002%, particle size 0.8mm ~ 1.4mm. 3.2.6 tin particles. sulfur content of less than 0.0002%, particle size 0.4mm ~ 0.8mm. If necessary, apply acetone (3.2.1) clean the surface and in the room Temperature and dried. 3.2.7 pure iron. purity of greater than 99.8%, a sulfur content of less than 0.0002%, particle size 0.8mm ~ 1.6mm. 3.2.8 Oxygen. The purity of more than 99.95%, if other levels of oxygen to obtain a low and consistent blank, can also be used. 3.2.9 Power Source gas. nitrogen or compressed air, which contaminants (oil and water) content of less than 0.5%. 3.2.10 porcelain crucible. diameter × height, 23mm × 23mm or 25mm × 25mm, and above 1200 ℃ high temperature furnace 4h or by burning oxygen burning to blank the lowest value. 3.2.11 crucible tongs. 3.3 instruments and equipment 3.3.1 Sulphur infrared absorption analyzer (sensitivity of 0.1 × 10-6), which means as shown in Figure 1. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 8704.3-2009_English be delivered?Answer: Upon your order, we will start to translate GB/T 8704.3-2009_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 8704.3-2009?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 8704.3-2009 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
