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BS ISO 4695:2021 – TC

$134.27

Tracked Changes. Iron ores for blast furnace feedstocks. Determination of the reducibility by the rate of reduction index

Published By Publication Date Number of Pages
BSI 2021 46
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This document specifies a method to provide a relative measure for evaluating the extent to and ease with which oxygen can be removed from iron ores, when reduced under conditions resembling those prevailing in the reduction zone of a blast furnace.

This document is applicable to lump ores, sinters and hot-bonded pellets.

PDF Catalog

PDF Pages PDF Title
1 30446631
25 A-30436651
26 National foreword
30 Foreword
31 Introduction
33 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
34 5 Sampling, sample preparation and preparation of test portions
5.1 Sampling and sample preparation
5.2 Preparation of test portions
6 Apparatus
37 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
7.4 Temperature of the test portion
38 8 Procedure
8.1 Number of determinations for the test
8.2 Chemical analysis
8.3 Reduction
39 9 Expression of results
9.1 Calculation of the reducibility index
40 9.2 Repeatability and acceptance of test results
10 Test report
41 11 Verification
42 Annex A (normative) Flowsheet of the procedure for the acceptance of test results
43 Annex B (informative) Derivation of equation for reducibility
BS ISO 4695:2021 - TC
$134.27