YS/T 63.21-2007 English PDF

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YS/T 63.21-2007: Carbonaceous materials used in the production of aluminium. Part 21: Cathodic pastes. Determination of expansion/shrinkage during baking
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 63.21-2007	259	Add to Cart	3 days	Carbonaceous materials used in the production of aluminium. Part 21: Cathodic pastes. Determination of expansion/shrinkage during baking	Valid

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Basic data

Standard ID: YS/T 63.21-2007 (YS/T63.21-2007)
Description (Translated English): Carbonaceous materials used in the production of aluminium. Part 21: Cathodic pastes. Determination of expansion/shrinkage during baking
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: Q52
Classification of International Standard: 71.100.10
Word Count Estimation: 8,894
Date of Issue: 2007-11-14
Date of Implementation: 2008-05-01
Quoted Standard: YS/T 62.4; YS/T 63.1
Adopted Standard: ISO 14428-2004, MOD
Regulation (derived from): NDRC Notice No. 77 of 2007
Issuing agency(ies): National Development and Reform Commission
Summary: This standard specifies the aluminum cathode paste (hot and cold ramming paste) firing expansion/contraction of the measurement method. This standard applies to aluminum cathode paste (hot and cold ramming paste, hereinafter referred to as the cathode paste) firing expansion/contraction Determination. Also be used for the anode and cathode blocks firing raw expansion/contraction was measured.

YS/T 63.21-2007: Carbonaceous materials used in the production of aluminium. Part 21: Cathodic pastes. Determination of expansion/shrinkage during baking

---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.
Carbonaceous materials used in the production of aluminium.Part 21. Cathodic pastes.Determination of expansion/shrinkage during baking ICS 71.100.10 Q52 People's Republic of China Nonferrous Metals Industry Standard Aluminum Carbonaceous material Part 21. Cathode paste Firing the expansion/contraction Determination (ISO 14428-2004, Carbonaceousmaterialsfortheproductionofaluminium Expansion/shrinkageduringbaking, MOD) Posted 2008-05-01 2007-11-14 implementation National Development and Reform Commission issued

Foreword

YS/T 63 "Carbonaceous material for aluminum," a total of 21 parts. --- Part 1. firing process, firing weightlessness measurement sample measurement cathode paste and green specimens apparent density; --- Part 2. Determination of cathode blocks and prebaked anodes room temperature resistivity; --- Part 3. Determination of the thermal conductivity of Comparative Law; --- Part 4. Determination of thermal expansion coefficient; --- Part 5. Determination of pressure at the bottom there is sodium expansion of carbon block; --- Part 6. Determination of open porosity hydrostatic law; --- Part 7. Determination of apparent density size method; --- Part 8. Determination of density in xylene Pyknometer; --- Part 9. Determination of true density of helium hydrometer method; --- Part 10. Determination of air permeability; --- Part 11. Determination of the reactivity to air mass loss method; --- Part 12. Determination of the reactivity prebaked anode CO2 mass loss method; --- Part 13. Determination of Young's modulus of the static measurement method; --- Part 14. Determination of flexural strength of three-point method; --- Part 15. Determination of compressive strength; --- Part 16. Determination of Trace Elements in X-ray fluorescence spectrometry method; --- Part 17. Determination of volatile matter; --- Part 18. Determination of moisture content; --- Part 19. Determination of ash content; --- Part 20. Determination of sulfur; --- Part 21. cathode paste firing the expansion/contraction of the determination. This is Part 21. The partial modification using ISO 14428.2004 "carbonaceous materials used in aluminum cold ramming paste and hot ramming paste firing during expansion/contraction." To facilitate comparison, listed in Appendix A of this chapter and section ISO 14428.2004 clauses comparison table. The partial modification of the use of ISO 14428.2004, it will delete its preface and introduction. According to the country's specific circumstances, in order to facilitate the actual Operation, increased and modified some provisions, which identifies a single vertical line in the margin of the terms involved. Details are as follows. --- Expands the scope of the standard, increasing the cathode and the anode raw blocks; --- Wafer thickness range of 2.0mm ± 0.5mm changed from the original (2.0mm ~ 5.0mm) ± 0.5mm; --- Recommended K-type (such as NiCrNi) thermocouples; --- Increase argon as measured by an inert gas; --- ISO 14428.2004 in the "preparation 6.2 calibration sample" part of the contents included in this part of the "4 instrument" in; --- To improve the detection efficiency calibration frequency from three times to once; --- A more straightforward expansion/contraction ΔL (T) curve example diagram; --- Remove the ISO 14428.2004 in 4.8 and 4.10. The non-ferrous metal part by the National Standardization Technical Committee and centralized. This part of the Aluminum Corporation of China Guizhou Branch is responsible for drafting. The main drafters of this section. Pastoral, Wu Yan, Zeng Ping, strong white, Wuan Jing, Xing steel. The non-ferrous metal part by the National Standardization Technical Committee responsible for the interpretation. Aluminum Carbonaceous material Part 21. Cathode paste Firing the expansion/contraction Determination

1 Scope

This section provides an aluminum electrolytic cathode paste (hot and cold ramming paste) the expansion/contraction of the measurement method during firing. This section applies to aluminum electrolytic cathode paste (hot and cold ramming paste, hereinafter referred to as the cathode paste) firing the expansion/contraction of the determination. also may When used in the cathode and anode baking raw block the expansion/contraction of the determination.

2 Normative references

The following documents contain provisions which, through reference in this standard, 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. YS/T 62.4 carbonaceous materials used in aluminum sampling methods - Part 4. cathode paste YS/T 63.1 aluminum Carbonaceous material - Part 1. Cathode paste baking method, determination of weightlessness and roasting green test sample Determination of apparent density of the sample

3 PRINCIPLE OF THE METHOD

The cathode paste tamping sample is placed in a heating furnace to 3 ℃/min heating rate from room temperature to 950 ℃, 3h at 950 ℃ under constant temperature, Tamping paste cathode heating during the measurement of the height change of the sample was calculated from the cathode paste from non-plastic coke temperature to 950 ℃ stop (including the entire constant Temperature of) the cathode paste expansion/shrinkage.

4 Instrument

4.1 specimen height measuring device. the precision of 0.1mm. 4.2 dilatometer. measure 2 × 10-5 times the height change of the sample (eg. 50mm height for the sample, a measure of the height of 1μm Changes), and the push rod dilatometer shall be of the same material (preferably using a transparent quartz material) jacket tubes (shown schematically in Figure 1). Dilatometer on Extensometer contact force does not exceed 2N, it shall be measured perpendicular to the expansion/contraction changes. Measurement process should be avoided in a temperature range of 20 ℃ ~ For any irreversible changes occur within 950 ℃. 4.3 discs and the outer sleeve (preferably using a transparent quartz material). the size of the sample wafer of the same thickness (2.0 ~ 5.0) mm ± 0.5mm, a diameter error is ± 0.1mm. The gap between the outer casing side walls and the sample should be between 2mm ~ 10mm. 4.4 filler (soot). filled between the sample and the casing for supporting the specimen during heating, filler particle size should be less than 1mm. Optional electricity anthracite or graphite as a filler. 4.5 furnace. may be heated to 950 ℃. Temperature gradient across the height of the sample is less than 10 ℃, temperature control means can achieve a heating rate of 3 ℃/min requirements. 4.6 Temperature Measurement apparatus. i.e. thermocouple, K type or S type (for example. NiCrNi or Pt/Pt10% Rh), in the range of 20 ℃ ~ 950 ℃ Measurement error of ± 2 ℃. 4.7 carrier gas (or inert gas). argon or nitrogen, purity greater than 99.99%. 4.8 calibration sample. The International Organization for Standardization certification authority or certified calibration samples, shape and size of the sample and testing the same. We recommend the use of transparent quartz calibration samples. ......

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