GB/T 14983-2008Refractory products - Determination of alkali-resistance (English PDF)

Foreword

This standard replaces GB/T 14983-1994 "Standard Test Method for basic refractories." This standard and GB/T 14983-1994 main differences are as follows:

--- Eliminated by alkali to evaluate the rate of change of the line before and after the alkali resistance of the way;

--- Increased widely melting crucible method alkali alkali resistance test method;

--- Increase applicable to strong alkali-resistant refractory coating method molten alkali buried alkali resistance test methods. This standard by the National Standardization Technical Committee Refractories and centralized. This standard was drafted. Sinosteel Luoyang Institute of Refractories, Gongyi refractory Mastery Zhongyuan Technology Co., Ltd. Shanxi Xixiaoping resistance Fire Material Co., Ltd. The main drafters of this standard. Xiu-Fang Wang, Zhang Yi, Zhu Lihui, Wang Wenwu, Li Xianming, Kang Huarong, Haoliang Jun, Zhang Deyi. This standard supersedes the previous release version of the case.

--- GB/T 14983-1994. Test methods for basic refractories

1 Scope

GB/T 14983-2008 is the Chinese national standard on refractory products - determination of alkali-resistance, in the field of glass and ceramics industries. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 3 June 2008 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 December 2008. Classification: ICS 81.080, CCS Q40. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This standard specifies the test methods for anti-alkaline refractory principles, equipment, samples, test procedures, evaluation of results and test report. This standard applies to the determination of basic refractories.

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 5072 Refractory cold crushing strength

GB/T 7321 sample preparation method shaped refractory products

GB/T 8170 numerical rounding rules

GB/T 10325 Shaped refractory products - Sampling and acceptance testing

GB/T 16839.1 Part 1 thermocouple indexing table

GB/T 16839.2 thermocouple Tolerance Part 2

GB/T 17617 refractory raw materials and monolithic refractories sampling

GB/T 18930 refractory term

3 Terms and Definitions

Terms and definitions GB/T 18930 apply to this standard established. 4 1 (alkali vapor method) This method is applicable to the determination of anti-alkaline shaped refractory products.

4.1 Principle At a temperature of 1100 °C, potassium carbonate (K2CO3) and charcoal produced by the reaction of alkali vapor sample of refractory erosion occurs, generating New alkali metal silicate and carbonate compound, the material property change.