SIST EN ISO 21068-1:2008

Chemical analysis of silicon-carbide-containing raw materials and refractory products - Part 1: General information and sample preparation (ISO 21068-1:2008)

This part of ISO 21068 gives definitions and specifies techniques for the preparation of samples for the chemical analysis of silicon-carbide-containing raw materials and refractory products including: a) graphite brick containing silicon carbide;b) silicon carbide brick (includes the bricks containing silicon nitride); c) refractories containing carbon and/or silicon carbide mixed with clay; d) refractories containing carbon and/or silicon carbide mixed with silica (and fused silica); e) refractories containing carbon and/or silicon carbide mixed with high alumina material; f) refractories containing carbon and/or silicon carbide mixed with magnesia (and dolomite); g) refractories containing carbon and/or silicon carbide mixed with chrome mineral or magnesia-chrome materials; h) refractories containing carbon and/or silicon carbide except those described in a) to g) above. The items of chemical analysis described in ISO 21068, Parts 1 to 3 are as follows: 1) loss on drying (LOD); 2) loss on ignition (LOI); 3) total carbon, Ctotal; 4) free carbon, Cfree; 5) silicon carbide, SiC; 6) free silicon (Sifree); 7) free aluminium (Alfree); 8) free magnesium (Mgfree); 9) free iron (Fefree); 10) silicon(IV) oxide (SiO2).

Chemische Analyse von Siliciumcarbid enthaltenden Rohstoffen und feuerfesten Erzeugnissen - Teil 1: Allgemeine Angaben und Probenvorbereitung (ISO 21068-1:2008)

Dieser Teil von ISO 21068 legt Definitionen und Verfahren der Probenvorbereitung fest.

Analyse chimique des matières premières et des produits réfractaires contenant du carbure de silicium - Partie 1: Informations générales et préparation des échantillons (ISO 21068-1:2008)

L'ISO 21068-1:2008 donne des définitions et spécifie des techniques de préparation des échantillons pour l'analyse chimique des matières premières et produits réfractaires contenant du carbure de silicium.

Kemijska analiza surovin in ognjevzdržnih izdelkov s silicijevim karbidom - 1. del: Splošne informacije in priprava vzorcev (ISO 21068-1:2008)

General Information

• Status: Withdrawn
• Publication Date: 02-Nov-2008
• Withdrawal Date: 13-Jun-2024
• ICS: 81.080 - Refractories
• Technical Committee: IKER - Ceramics
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 14-Jun-2024
• Due Date: 07-Jul-2024
• Completion Date: 14-Jun-2024
• Ref Project: EN ISO 21068-1:2008 - Chemical analysis of silicon-carbide-containing raw materials and refractory products - Part 1: General information and sample preparation (ISO 21068-1:2008)

Relations

• Revises: SIST EN ISO 21068-1:2024 - Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 1: General information, terminology and sample preparation (ISO 21068-1:2024)
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 21068-1:2008
01-december-2008
Kemijska analiza surovin in ognjevzdržnih izdelkov s silicijevim karbidom - 1. del:
Splošne informacije in priprava vzorcev (ISO 21068-1:2008)
Chemical analysis of silicon-carbide-containing raw materials and refractory products -
Part 1: General information and sample preparation (ISO 21068-1:2008)
Chemische Analyse von Siliciumcarbid enthaltenden Rohstoffen und feuerfesten
Erzeugnissen - Teil 1: Allgemeine Angaben und Probenvorbereitung (ISO 21068-1:2008)
Analyse chimique des matières premières et des produits réfractaires contenant du
carbure de silicium - Partie 1: Informations générales et préparation des échantillons
(ISO 21068-1:2008)
Ta slovenski standard je istoveten z: EN ISO 21068-1:2008
ICS:
81.080 Ognjevzdržni materiali Refractories
SIST EN ISO 21068-1:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN ISO 21068-1:2008

---------------------- Page: 2 ----------------------

SIST EN ISO 21068-1:2008
EUROPEAN STANDARD
EN ISO 21068-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2008
ICS 81.080

English Version
Chemical analysis of silicon-carbide-containing raw materials
and refractory products - Part 1: General information and sample
preparation (ISO 21068-1:2008)
Analyse chimique des matières premières et des produits Chemische Analyse von Siliciumcarbid enthaltenden
réfractaires contenant du carbure de silicium - Partie 1: Rohstoffen und feuerfesten Erzeugnissen - Teil 1:
Informations générales et préparation des échantillons (ISO Allgemeine Angaben und Probenvorbereitung (ISO 21068-
21068-1:2008) 1:2008)
This European Standard was approved by CEN on 11 July 2008.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21068-1:2008: E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN ISO 21068-1:2008
EN ISO 21068-1:2008 (E)
Contents Page
Foreword.3

2

---------------------- Page: 4 ----------------------

SIST EN ISO 21068-1:2008
EN ISO 21068-1:2008 (E)
Foreword
This document (EN ISO 21068-1:2008) has been prepared by Technical Committee ISO/TC 33 "Refractories"
in collaboration with Technical Committee CEN/TC 187 “Refractory products and materials” the secretariat of
which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by February 2009, and conflicting national standards shall be withdrawn
at the latest by February 2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 21068-1:2008 has been approved by CEN as a EN ISO 21068-1:2008 without any
modification.

3

---------------------- Page: 5 ----------------------

SIST EN ISO 21068-1:2008

---------------------- Page: 6 ----------------------

SIST EN ISO 21068-1:2008

INTERN
...