BSI PD ISO/TR 9686:2017
$142.49
Direct reduced iron. Determination of carbon and/or sulfur. High-frequency combustion method with infrared measurement
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 24 |
This document specifies a method for the determination of the mass fraction of carbon and/or sulfur in direct reduced iron by infrared measurement after high-frequency combustion.
This method is applicable to mass fractions of carbon between 0,05 % and 2,5 %, and/or mass fractions of sulfur between 0,001 % and 0,05 % in direct reduced iron.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents |
| 8 | 6 Apparatus |
| 9 | 7 Sampling and samples 7.1 Laboratory sample 7.2 Preparation of predried test samples 8 Procedure 8.1 General operating instructions 8.2 Test portion 8.3 Blank test |
| 10 | 8.4 Calibration 8.4.1 Crucible preparation |
| 11 | 8.4.2 Combustion 8.5 Determination 9 Expression of results 9.1 Calculation of mass fraction of carbon or sulfur 9.2 General treatment of results 9.2.1 Repeatability and permissible tolerance |
| 12 | 9.2.2 Determination of analytical result 9.2.3 Between-laboratories precision |
| 13 | 9.2.4 Check for trueness |
| 14 | 9.2.5 Calculation of final result 10 Test report |
| 15 | Annex A (informative) Crucible loading sequence |
| 16 | Annex B (informative) Flowsheet of the procedure for the acceptance of analytical values for test samples |
| 17 | Annex C (informative) Features of commercial HF combustion/infrared sulfur analysers |
| 18 | Annex D (informative) Derivation of repeatability and permissible tolerance formulae |
| 19 | Annex E (informative) Precision data obtained by international analytical trials |
| 21 | Bibliography |
