ASTM D5341 / D5341M - 14

    Standard Test Method for Measuring Coke Reactivity Index (CRI) and Coke Strength After Reaction (CSR)

    Active Standard ASTM D5341 / D5341M | Developed by Subcommittee: D05.15

    Book of Standards Volume: 05.06


      Format Pages Price  
    PDF 5 $43.00   ADD TO CART
    Hardcopy (shipping and handling) 5 $43.00   ADD TO CART
    Standard + Redline PDF Bundle 10 $51.60   ADD TO CART


    Significance and Use

    4.1 When coke lumps descend in the blast furnace, they are subjected to reaction with countercurrent CO2 and to abrasion as they rub together and against the walls of the furnace. These concurrent processes physically weaken and chemically react with the coke lumps, producing an excess of fines that can decrease burden permeability and result in increased coke rates and lost hot metal production. This test method is designed to measure indirectly this behavior of coke in the blast furnace.

    1. Scope

    1.1 This test method, patterned after the Nippon Steel test procedure, describes the equipment and techniques used for determining lump coke reactivity in carbon dioxide (CO2) gas at elevated temperatures and its strength after reaction in CO2 gas by tumbling in a cylindrical chamber referred to as an I-tester.

    1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

    1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    UNSPSC Code

    UNSPSC Code 15101604(Coke)


    DOI: 10.1520/D5341_D5341M-14

    ASTM International is a member of CrossRef.

    ASTM D5341 / D5341M

    Citing ASTM Standards
    Back to Top