GB/T 3654.3-2019 Translated English of Chinese Standard. (GBT 3654.3-2019, GB/T3654.3-2019, GBT3654.3-2019): Ferroniobium - Determination of Silicon Content - Gravimetric Methodhttps://www.chinesestandard.net, 31/08/2019 - 12 páginas This Part of GB/T 3654 stipulates the determination of silicon content in ferroniobium through gravimetric method. This Part is applicable to the determination of silicon content in ferroniobium; the range of determination (mass fraction): 1.00% ~ 10.00%. |
Índice
Foreword | 5 |
Reagents | 6 |
Analytical Procedures | 7 |
Result Calculation and Expression | 8 |
Precision | 9 |
Test Report | 10 |
Appendix A normative Sample Analysis Result Acceptance Procedure Flow Chart | 11 |
Appendix B informative Precision Test Data | 12 |
Palavras e frases frequentes
4.6 Sulfuric acid 6379.1 Accuracy trueness Acceptance Procedure Flow acid washing solution Analysis Result Acceptance beaker blank test burn for 40 circumstance of exceeding constant mass content in ferroniobium crucible 5.3 dehydration of silicic determination of silicon electric heating plate emits sulfuric acid expressed in g Ferroalloys filter paper fraction of silicon g of sodium high-temperature furnace 5.4 Hydrochloric acid hydrofluoric acid 4.4 hydrofluoric acid treatment hydrogen peroxide 4.5 independent analysis results independent determination results inner wall joint test laboratory leach the molten level of silicon mass fraction mass of precipitation Measurement Methods mL of hydrofluoric niobium precipitation and crucible Procedure Flow Chart reaches a constant repeatability limit Repeatedly burn reproducibility limit Result Acceptance Procedure Sample Analysis Result silicic acid silicon content silicon dioxide silicon tetrafluoride slightly cool sodium hydroxide sodium peroxide specified date stipulated in GB/T sulfuric acid 4.6 sulfuric acid smoke Sulfuric acid washing trueness and precision watch glass