YS/T 63.24-2012Carbonaceous materials used in the production of aluminium. Part 24: Baked anodes. Determination of the reactivity to carbon dioxide. Thermogravimetric method (English PDF)

Foreword

YS/T 63 "Carbonaceous material for aluminum," a total of 26 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 determination;

--- Part 22. Determination of equivalent temperature roasting degree method;

--- Part 23. Determination of the reactivity to air prebaked anode thermal gravimetry;

--- Part 24. Determination of the reactivity prebaked anode carbon dioxide thermal gravimetry;

--- Part 25. Determination of no pressure sodium expansion of the bottom of the carbon block;

--- Part 26. Determination of refractories cryolite penetration ability.

Part is divided into 24 sections.

This section drafted in accordance with GB/T 1.1-2009 given rules.

This section is non-arbitration.

This section uses the translation method identical with ISO 12988.2:2004 "carbonaceous materials used in the production of aluminum prebaked anode carbon dioxide reactivity Determination of the second portion of the thermal gravimetry. " This part of ISO 12988.2:2004 made the following editorial changes.

--- Remove the ISO 12988.2:2004 directory, foreword, introduction, and references;

--- Standard name in accordance with the requirements of this series of standards has been modified.

The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.

This section is responsible for drafting units. Aluminum Corporation of China Zhengzhou Research Institute, China Nonferrous Metals Industry Standards and Metrology Institute for Quality.

Participated in the drafting of this section. Shandong Chenyang Carbon Co., Ltd., Shandong Yankuang Carbon Products Co., Ltd., Beijing Inspire Keke Technology Co., Ltd., Shandong Nanshan Aluminum Co., Ltd.

1 Scope

YS/T of the provisions of section 63 of the method of thermogravimetric (TGA) was measured prebaked anode carbon dioxide reactive.

This section applies to the determination of prebaked anode carbon dioxide reactivity thermogravimetric (TGA). Since the heating conditions, the sample size, material, measured the mass loss rate and the subsequent reaction of diversity, a lot of available devices. This section provides the sample size, reaction temperature, surface stream Speed and reaction time, so that the results of different devices measured are comparable.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

ISO 8007-1 carbonaceous materials used in aluminum sampling methods - Part 2. prebaked anode (Carbonaceousmaterialsusedinthe productionofaluminium-Samplingplansandsamplingfromindividualunits-Part 2. Prebakedan-odes)

3 Terms and Definitions

The following terms and definitions apply to this document.

Off rate dustingalphaRCD.

During the test, the unit area per unit time from the falling amount of charcoal dust.

End stage dioxide reactive finalCO2reactivityalphaRCf.

The carbon block, the reaction chamber is exposed to the atmosphere of carbon dioxide at the last 30min, the sample mass loss ratio of the original surface area.

Note. milligrams per square centimeter per hour (mg/(cm2 · h)).

The initial phase of the carbon dioxide reaction initialCO2reactivityalphaRCi.

Charcoal in the reaction chamber is exposed to a carbon dioxide atmosphere within the first 30min, the mass loss of the original specimen surface area ratio.

Note. milligrams per square centimeter per hour (mg/(cm2 · h)).

The overall reaction of carbon dioxide totalCO2reactivityalphaRCt.

Charcoal in the reaction chamber is exposed to the inner 420min, the total mass loss of time under a carbon dioxide atmosphere (including dust and amount) with the original specimen table Area ratio.

Note. milligrams per square centimeter per hour (mg/(cm2 · h)).