ISO 21068-1:2008 含碳化硅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

标准编号：ISO 21068-1:2008

中文名称：含碳化硅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

英文名称：Chemical analysis of silicon-carbide-containing raw materials and refractory products — Part 1: General information and sample preparation

发布日期：2008-08

标准范围

This part of ISO 21068 gives definitions and specifies techniques for the preparation of samples for thechemical analysis of silicon-carbidercontaining raw materials and refractory products including:a) graphite bdck 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) refractades 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) totalcarbon, Ctotal; 4) free carbon, Ceee; 5) silicon carbide, SiC; 6) free silicon (Si<(down）free>); 7) free aluminium (Al<(down）free>); 8) free magnesium (Mg<(down）free>); 9) freeiron (Fe<(down）free>); 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(Ig) oxide (0r203);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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