BS ISO 11258:2015
$142.49
Iron ores for shaft direct-reduction feedstocks. Determination of the reducibility index, final degree of reduction and degree of metallization
| Published By | Publication Date | Number of Pages |
| BSI | 2015 | 28 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions 4 Principle |
| 10 | 5 Sampling, sample preparation, and preparation of test portions 5.1 Sampling and sample preparation 5.2 Preparation of test portions 6 Apparatus 6.1 General |
| 11 | 7 Test conditions 7.1 General 7.2 Reducing gas 7.2.1 Composition 7.2.2 Purity 7.2.3 Flow rate 7.3 Heating and cooling gas |
| 12 | 7.4 Temperature of the test portion 8 Procedure 8.1 Number of determinations for the test 8.2 Chemical analysis 8.3 Reduction 8.4 Chemical analysis after reduction |
| 13 | 9 Expression of results 9.1 Calculation of the final degree of reduction (R90) 9.2 Calculation of the reducibility indices dR/dt(R=40) and dR/dt(R=90) 9.2.1 Reduction curve 9.2.2 Reducibility index for 40 % reduction |
| 14 | 9.2.3 Reducibility index for 90 % reduction 9.3 Calculation of the degree of metallization (M) 9.3.1 Determination of the degree of metallization from chemical analysis (M) 9.3.2 Determination of the degree of metallization from R90 (MR) |
| 15 | 9.4 Repeatability for R90 and acceptance of test results 10 Test report 11 Verification |
| 19 | Annex A (normative) Flowsheet of the procedure for the acceptance of test results |
| 20 | Annex B (informative) Derivation of formula for reducibility |
| 22 | Annex C (informative) Derivation of formula for degree of metallization from R90 |
| 24 | Bibliography |
