Name: UNI EN ISO 21068-1 : 2008
Brand: UNI

CHEMICAL ANALYSIS OF SILICON-CARBIDE CONTAINING RAW MATERIALS AND REFRACTORY PRODUCTS - PART 1: GENERAL INFORMATION AND SAMPLE PREPARATION

Published date

04-12-2008

Publisher

Ente Nazionale Italiano di Unificazione (UNI)

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 Sampling and preparation of the test sample
4.1 General
4.2 Sample pretreatment
5 Preliminary analyses
6 Expression of results
7 Test report
Bibliography

Provides definitions and specifies techniques for the preparation of samples for the chemical analysis of silicon-carbide containing raw materials and refractory products.

Committee	CT 700
DocumentType	Standard
PublisherName	Ente Nazionale Italiano di Unificazione (UNI)
Status	Current

Standards	Relationship
ISO 21068-1:2008	Identical
EN ISO 21068-1:2008	Identical

ISO 5725-1:1994	Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO 10081-1:2003	Classification of dense shaped refractory products Part 1: Alumina-silica
ISO 21587-1:2007	Chemical analysis of aluminosilicate refractory products (alternative to the X-ray fluorescence method) Part 1: Apparatus, reagents, dissolution and gravimetric silica
ISO 21079-3:2008	Chemical analysis of refractories containing alumina, zirconia, and silica — Refractories containing 5 percent to 45 percent of ZrO2 (alternative to the X-ray fluorescence method) — Part 3: Flame atomic absorption spectrophotometry (FAAS) and inductively coupled plasma emission spectrometry (ICP -AES)
ISO 21587-3:2007	Chemical analysis of aluminosilicate refractory products (alternative to the X-ray fluorescence method) Part 3: Inductively coupled plasma and atomic absorption spectrometry methods
ISO 5022:1979	Shaped refractory products Sampling and acceptance testing
ISO 12677:2011	Chemical analysis of refractory products by X-ray fluorescence (XRF) Fused cast-bead method
EN 12698-1:2007	Chemical analysis of nitride bonded silicon carbide refractories - Part 1: Chemical methods
ISO 9286:1997	Abrasive grains and crude Chemical analysis of silicon carbide
ISO 21079-2:2008	Chemical analysis of refractories containing alumina, zirconia, and silica — Refractories containing 5 percent to 45 percent of ZrO2 (alternative to the X-ray fluorescence method) — Part 2: Wet chemical analysis
ISO 10058-3:2008	Chemical analysis of magnesite and dolomite refractory products (alternative to the X-ray fluorescence method) — Part 3: Flame atomic absorption spectrophotometry (FAAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES)
ISO 11648-2:2001	Statistical aspects of sampling from bulk materials — Part 2: Sampling of particulate materials
ISO 21587-2:2007	Chemical analysis of aluminosilicate refractory products (alternative to the X-ray fluorescence method) Part 2: Wet chemical analysis
ISO 10081-4:2014	Classification of dense shaped refractory products Part 4: Special products
ISO 20565-2:2008	Chemical analysis of chrome-bearing refractory products and chrome-bearing raw materials (alternative to the X-ray fluorescence method) — Part 2: Wet chemical analysis
ISO 10058-2:2008	Chemical analysis of magnesite and dolomite refractory products (alternative to the X-ray fluorescence method) — Part 2: Wet chemical analysis
ISO 20565-1:2008	Chemical analysis of chrome-bearing refractory products and chrome-bearing raw materials (alternative to the X-ray fluorescence method) — Part 1: Apparatus, reagents, dissolution and determination of gravimetric silica
ISO 20565-3:2008	Chemical analysis of chrome-bearing refractory products and chrome-bearing raw materials (alternative to the X-ray fluorescence method) — Part 3: Flame atomic absorption spectrometry (FAAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES)
ISO 31-0:1992	Quantities and units Part 0: General principles
ISO 10081-3:2003	Classification of dense shaped refractory products Part 3: Basic products containing from 7 % to 50 % residual carbon
ISO 1927:1984	Prepared unshaped refractory materials (dense and insulating) Classification
ISO 10060:1993	Dense, shaped refractory products Test methods for products containing carbon
ISO 21068-2:2008	Chemical analysis of silicon-carbide-containing raw materials and refractory products Part 2: Determination of loss on ignition, total carbon, free carbon and silicon carbide, total and free silica and total and free silicon
EN 1094-4:1995	Insulating refractory products - Part 4: Determination of bulk density and true porosity
EN 12698-2:2007	Chemical analysis of nitride bonded silicon carbide refractories - Part 2: XRD methods
ISO 10081-2:2003	Classification of dense shaped refractory products Part 2: Basic products containing less than 7 % residual carbon
ISO 26845:2008	Chemical analysis of refractories General requirements for wet chemical analysis, atomic absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) methods
ISO 8656-1:1988	Refractory products Sampling of raw materials and unshaped products Part 1: Sampling scheme
ISO 21079-1:2008	Chemical analysis of refractories containing alumina, zirconia and silica — Refractories containing 5 percent to 45 percent of ZrO2 (alternative to the X-ray fluorescence method) — Part 1: Apparatus, reagents and dissolution
ISO 10058-1:2008	Chemical analysis of magnesite and dolomite refractory products (alternative to the X-ray fluorescence method) — Part 1: Apparatus, reagents, dissolution and determination of gravimetric silica