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GB/T 4699.6-2008 English PDF

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GB/T 4699.6-2008: Ferrochromium and silicon chromium -- Determination of sulfur content -- The infrared absorption method and the combustion-titration method
Status: Valid

GB/T 4699.6: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 4699.6-2008English229 Add to Cart 3 days [Need to translate] Ferrochromium and silicon chromium -- Determination of sulfur content -- The infrared absorption method and the combustion-titration method Valid GB/T 4699.6-2008
GB/T 4699.6-1988English199 Add to Cart 2 days [Need to translate] Methods for chemical analysis of silicochromium--The infrared absorption method for the determination of sulfur content Obsolete GB/T 4699.6-1988

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Basic data

Standard ID GB/T 4699.6-2008 (GB/T4699.6-2008)
Description (Translated English) Ferrochromium and silicon chromium -- Determination of sulfur content -- The infrared absorption method and the combustion-titration method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H11
Classification of International Standard 77.100
Word Count Estimation 10,197
Date of Issue 2008-05-13
Date of Implementation 2008-11-01
Older Standard (superseded by this standard) GB/T 4699.6-1988; GB/T 4699.7-1988; GB/T 5687.8-1988; GB/T 5687.9-1988
Quoted Standard GB/T 4010
Regulation (derived from) National Standard Approval Announcement 2008 No.8 (Total No.121)
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 infrared absorption method and combustion and determination of chromium iron titration, sulfur content of silicon-chromium alloy. This section applies to chromium iron, determination of sulfur content in silicon-chromium alloy. Measuring range infrared absorption method (mass fraction): 0. 0050% to 0. 070 % combustion and titration measurement range (mass fraction): 0. 0050%-0. 120%.

GB/T 4699.6-2008: Ferrochromium and silicon chromium -- Determination of sulfur content -- The infrared absorption method and the combustion-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.
Ferrochromium and silicochromium. Determination of sulfur content. The infrared absorption method and the combustion-titration method ICS 77.100 H11 National Standards of People's Republic of China Replacing GB/T 5687.8 ~ 5687.9-1988, GB/T 4699.6 ~ 4699.7-1988 Determination of silicon ferrochrome and chrome sulfur content The infrared absorption method and combustion titration method Posted 2008-05-13 2008-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This part is GB/T 5687.8-1988 "Methods for chemical analysis of ferrochromium The infrared absorption method for the determination of sulfur content", GB/T 5687.9- 1988 "Methods for chemical analysis of ferrochromium determination of sulfur content and combustion titration method", GB/T 4699.6-1988 "silicon alloy chemical analysis method The infrared absorption method for the determination of sulfur content "and GB/T 4699.7-1988" silicon chemical analysis methods and determination of sulfur content in combustion titration " Integration of amendments. This Part replaces GB/T 5687.8-1988, GB/T 5687.9-1988, GB/T 4699.6-1988 and GB/T 4699.7-1988. This portion of the GB/T 5687.8-1988, GB/T 5687.9-1988, GB/T 4699.6-1988 and GB/T 4699.7- 1988 compared to the main changes are as follows. --- Part of ferrochrome and chrome silicon expressed the same two criteria are combined; --- Determine the detection limit of combustion and titration of 0.0050%; --- Combustion titration method by the time the content of 0.0050% to 0.001% difference allows the modification of the content of 0.0050% to 0.015% allowed Xu difference is 0.002%. This part is proposed by the China Iron and Steel Association. This section is under the jurisdiction of Metallurgical Industry Information Standards Institute. This section is drafted. Sinosteel Jilin Ferroalloy Co., Ltd. The main drafters of this section. Yang Fan, Bi Jun, Li Yahua. This part of the standard replaces the previous editions are. --- GB/T 4699.6-1988; --- GB/T 4699.7-1988; --- GB/T 5687.8-1988; --- GB/T 5687.9-1988. Determination of silicon ferrochrome and chrome sulfur content The infrared absorption method and combustion titration method Warning. Use of this section shall be a person experiences regular laboratory work. This section does not indicate that all possible security issues. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This section provides an infrared absorption method and combustion and titration method of sulfur content of chromium iron, silicon chromium alloy. This section applies to chromium iron, sulfur content was measured silicon-chromium alloy, a measurement range of infrared absorption spectrometry (mass fraction). 0.0050% ~ 0.070%, combustion and titration measurement range (mass fraction). 0.0050% ~ 0.120%.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether 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 a method of 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 Sulfur absorption of a specific wavelength of infrared energy absorbed is proportional to its concentration can, according to the detector to accept the change in energy can be measured sulfur content. 3.2 Reagents and materials 3.2.1 Magnesium perchlorate anhydrous particles. 3.2.2 asbestos caustic soda, granular. 3.2.3 glass wool. 3.2.4 tungsten particles, sulfur content is less than 0.0002%, particle size 0.8mm ~ 1.4mm. 3.2.5 tin particles, the amount of carbon is less than 0.0003%, particle size of 0.4mm ~ 0.8mm. 3.2.6 pure iron purity of more than 99.8%, less than 0.002% sulfur content, particle size 0.8mm ~ 1.68mm. 3.2.7 oxygen purity of more than 99.95%, if other levels of oxygen to obtain a low and consistent blank, can also be used. 3.2.8 power source gas, nitrogen or compressed air, which contaminants (oil and water) content of less than 0.5%. 3.2.9 ceramic crucible diameter × height; 23mm × 23mm or 25mm × 25mm, and a high temperature above 1200 ℃ burning furnace 4h or burned in oxygen burning to blank the lowest value. 3.2.10 crucible tongs. 3.3 instruments and equipment 3.3.1 Sulphur infrared absorption analyzer (sensitivity of 1.0 × 10-6) Its apparatus shown in Figure 1.

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