DIN EN ISO 21068-1:2008
含碳化硅的原材料和耐火制品的化学分析.第1部分:一般信息和样品制备

Chemical analysis of silicon-carbide-containing raw materials and refractory products - Part 1: General information and sample preparation (ISO 21068-1:2008); English version of DIN EN ISO 21068-1:2008-12

标准号

DIN EN ISO 21068-1:2008

发布

2008年

发布单位

德国标准化学会

当前最新

DIN EN ISO 21068-1:2008

 

 

引用标准

EN 12698-2 ISO 12677:2003 ISO 21068-2:2008 ISO 31-0 ISO 5022 ISO 8656-1

被代替标准

DIN 51079-1:2004 DIN 51079-2:2004 DIN EN ISO 21068-1:2007 DIN 51075-1:1982 DIN 51075-2:1984 DIN 51075-3:1982 DIN 51075-4:1982 DIN 51075-5:1982 DIN 51076-1:1991

适用范围

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); 11) aluminium oxide (AI203); 12) iron(Ill) oxide (total iron oxide calculated as Fe203); 13) titanium(IV) oxide (TiO2); 14) calcium oxide (CaO); 15) magnesium oxide (MgO); 16) sodium oxide (Na20); 17) potassium oxide (K20); 18) chromium(Ill) oxide (Cr203); 19) zirconium oxide (ZrO2); 20) boron oxide (total boron calculated as B203); 21) nitrogen; 22) oxygen; 23) nitrides (undifferentiated: Si3N4, AIN, BN, sialon, oxy-nitrides, etc.).

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