SIST EN 993-4:1998

Methods of test for dense shaped refractory products - Part 4: Determination of permeability to gases

This European standard specifies a method for the measurement of the permeability to gases of dense shaped refractory products.

Prüfverfahren für dichte geformte feuerfeste Erzeugnisse - Teil 4: Bestimmung der Gasdurchlässigkeit

Diese Europäische Norm legt ein Verfahren zur Messung der Gasdurchlässigkeit von dichten geformten feuerfesten Erzeugnissen fest.

Méthodes d'essai pour produits réfractaires façonnés denses - Partie 4: Détermination de la perméabilité aux gaz

La présente norme européenne     prescrit une méthode de mesurage de la perméabilité aux gaz des produits réfractaires façonnés denses.

Metode za preskušanje gostih oblikovanih ognjevzdržnih izdelkov - 4. del: Ugotavljanje prepustnosti za pline

General Information

• Status: Published
• Publication Date: 31-Mar-1998
• ICS: 81.080 - Refractories
• Technical Committee: IKER - Ceramics
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-1998
• Due Date: 01-Apr-1998
• Completion Date: 01-Apr-1998
• Ref Project: EN 993-4:1995 - Methods of test for dense shaped refractory products - Part 4: Determination of permeability to gases

Overview

SIST EN 993-4:1998 is a European standard developed by CEN that specifies the method for determining the permeability to gases of dense shaped refractory products. Refractories are materials capable of withstanding high temperatures and harsh conditions, commonly used in industrial furnaces, kilns, and reactors. The ability to measure gas permeability in dense refractory products is critical for assessing their quality, performance, and suitability in various high-temperature applications.

This standard provides a uniform test procedure aimed at ensuring consistency and reliability in permeability measurement. It supports manufacturers, quality control laboratories, and users in validating refractory products for industrial use.

Key Topics

• Scope of Testing
  Focuses exclusively on dense shaped refractory products, which are known for their low porosity and high-density structure.

• Test Methodology
  Defines precise procedures for measuring how gases permeate through refractory samples under controlled conditions. This involves applying a gas flow across the sample and measuring its passage to quantify permeability.

• Measurement Parameters
  Includes details on sample preparation, test conditions such as temperature and pressure, and the calculation of permeability coefficients.

• Standardization and Reproducibility
  Emphasizes repeatable and comparable results by standardizing apparatus setup, testing conditions, and data interpretation.

Applications

The gas permeability characteristics of dense refractories are essential for:

• Industrial Furnace Design
  Ensuring refractory linings minimize gas infiltration that can lead to thermal losses or material degradation.

• Quality Control in Refractory Manufacturing
  Assessing product consistency and verifying conformance to specification limits.

• Process Optimization
  Informing choices of refractory materials for applications requiring specific gas resistance to improve operational efficiency.

• Safety and Durability Analysis
  Evaluating refractory longevity by identifying susceptibility to gaseous corrosion or infiltration.

Related Standards

SIST EN 993-4:1998 is part of a broader series of standards covering refractory products testing methods, including:

• EN 993-1 - General methods for testing dense shaped refractories
• EN 993-5 - Determination of bulk density and apparent porosity
• EN 993-6 - Determination of cold modulus of rupture
• EN 993-7 - Determination of permanent linear changes after firing

Together, these standards provide comprehensive protocols for assessing mechanical, physical, and thermal properties of refractory materials, ensuring end-users can make informed decisions based on reliable data.

---

Keywords: SIST EN 993-4:1998, dense shaped refractory products, gas permeability, refractory testing methods, CEN standards, high-temperature materials, industrial refractory testing, gas permeability measurement, refractory quality control, European refractory standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-1998
Metode za preskušanje gostih oblikovanih ognjevzdržnih izdelkov - 4. del:
Ugotavljanje prepustnosti za pline
Methods of test for dense shaped refractory products - Part 4: Determination of
permeability to gases
Prüfverfahren für dichte geformte feuerfeste Erzeugnisse - Teil 4: Bestimmung der
Gasdurchlässigkeit
Méthodes d'essai pour produits réfractaires façonnés denses - Partie 4: Détermination
de la perméabilité aux gaz
Ta slovenski standard je istoveten z: EN 993-4:1995
ICS:
81.080 Ognjevzdržni materiali Refractories
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
...