Standard No.:	GB/T 6900-2006
English Name:	Chemical Analysis of Alumina-silica Refractories
Chinese Name:	铝硅系耐火材料化学分析方法
Chinese Classification:	Q41    Siliceous refractory
Professional Classification:	GB    National Standard
Issued by:	AQSIQ, SAC
Issued on:	2006-09-30
Implemented on:	2007-2-1
Status:	abolished
Superseded by:	GB/T 6900-2016 Chemical analysis of alumina-silica refractories GB/T 6900-2016E
Superseded on:	2017-7-1
Abolished on:	2017-07-01
Superseding:	GB/T 14351-1993 Chemical analysis methods for fuse cast alumina refractories GB/T 6900.1-1986 Fireclay and high-alumina refractories; Determination of loss content on ignition; Gravimetric method GB/T 6900.10-1986 Fireclay and high-alumina refractories; Determination of manganese oxide content; Ammonium persulfate photometric method GB/T 6900.11-1986 Fireclay and high-alumina refractories; Determination of phosphorous pentoxide content; Molybdenum blue photometric method GB/T 6900.2-1986 Fireclay and high-alumina refractories; Determination of silicon dioxide content; Gravimetric-molybdenum blue photometric method GB/T 6900.3-1986 Fireclay and high-alumina refractories; Determination of iron oxide content; 0-phenanthroline photometric method GB/T 6900.4-1986 Fireclay and high-alumina refractories; Determination of aluminium oxide content; EDTA volumetric method GB/T 6900.5-1986 Fireclay and high-alumina refractories; Determination of titanium dioxide content; Hydrogen peroxide photometric method GB/T 6900.6-1986 Fireclay and high-alumina refractories; Determination of calcium oxide content; EDTA volumetric method GB/T 6900.7-1986 Fireclay and high-alumina refractories; Determination of magnesium oxide content; Xylidyl blue I-CTAB photometric method GB/T 6900.8-1986 Fireclay and high-alumina refractories; Determination of calcium oxide and magnesium oxide content; Atomic absorption spectrophotometric method GB/T 6900.9-1986 Fireclay and high-alumina refractories; Determination of potassium oxide and sodium oxide content; Atomic absorption spectrophotometric method
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This standard specifies chemical analysis of alumina-silica refractories. This standard covers the follosing analysis items: a) Loss on ignition (LOI); b) Silicon oxide (SiO2); c) Aluminum oxide (Al2O3); d) Ferric oxide (Fe2O3); e) Titanium dioxide (TiO2); f) Calcium oxide (CaO); g) Magnesium oxide (MgO); h) Potassium oxide (K2O); i) Sodium oxide (Na2O); j) Manganese oxide (MnO); k) Phosphoric anhydride (P2O3).

1 Scope 2 Normative Referances 3 Instruments and Equipment 4 Sample Preparation 5 General Principles 6 Test Report 7 Determination of Loss on Ignition 8 Determination of Silicon Oxide 9 Determination of Aluminium Oxide 10 Determination of Ferric Oxide 11 Determination of Titanium Dioxide 12 Determination of Calcium Oxide 13 Determination of Magnesium Oxide 14 Determination of Potassium Oxide and Sodium Oxide 15 Determination of Manganese Oxide 16 Determination of Phosphoric Anhydride Annex A