ISO 18894:2018
(Main)Coke — Determination of coke reactivity index (CRI) and coke strength after reaction (CSR)
Coke — Determination of coke reactivity index (CRI) and coke strength after reaction (CSR)
ISO 18894:2018 specifies the equipment and techniques used for determining lump-coke (nominal top size >20 mm) reactivity in carbon dioxide gas at elevated temperatures and its strength after reaction in carbon dioxide gas by tumbling in a cylindrical chamber. Main application is the testing of coke to be used in iron making blast furnaces (CRI~ 55). This standard can also be applied to other coke types (e.g. foundry coke), but limited precision is to be expected. Application to coke for non-iron making blast furnaces is beyond the scope of this document.
Coke — Détermination de l'indice de réactivité du coke (CRI) et de la résistance post-réactionelle du coke (CSR)
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 18894
Second edition
2018-02
Coke — Determination of coke
reactivity index (CRI) and coke
strength after reaction (CSR)
Coke — Détermination de l'indice de réactivité du coke (CRI) et de la
résistance post-réactionelle du coke (CSR)
Reference number
ISO 18894:2018(E)
©
ISO 2018
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ISO 18894:2018(E)
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© ISO 2018
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ii © ISO 2018 – All rights reserved
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ISO 18894:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Reagents . 3
6 Apparatus . 3
7 Preparation of test sample . 4
8 Procedure. 5
8.1 Number of tests . 5
8.2 Assembly of the reaction vessel . 5
8.3 Determination of CRI . 5
8.4 Determination of CSR . 6
9 Expression of results . 6
9.1 Coke reactivity index (CRI) . 6
9.2 Coke strength after reaction (CSR) . 6
10 Precision . 7
10.1 Quality control .
...
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