Cold strength of coke

The cold strength of coke, M40 (crushing resistance) and M10 (wear resistance), is determined at room temperature using the Mikum drum test method. By simulating the pulverization and fracture of coke under impact and friction, two important indicators can be obtained: its impact resistance and friction resistance at room temperature. M40 can reflect the crack rate of coke; if M40 is too low, it will cause the coke to fracture prematurely. M10 indicates the wear resistance of coke. The M40 and M10 indicators for coke exhibit good simulability in the bulk zone of blast furnaces. Moreover, numerous research findings indicate that the M10 indicator is more sensitive to blast furnace operations than M40, to the point where M10 is considered an indicator of the strength of the coke matrix.

The cold strength of coke includes the crushing resistance M40 and wear resistance M10, which are important indicators for assessing the firmness and durability of coke. Generally speaking, the higher the crush strength of coke, the relatively higher its abrasion resistance will be. Although there is no exact functional relationship between the crushing strength and wear resistance of coke, certain correlation between them can be observed through experiments and observations. Due to the possible variations in the manufacturing process and composition of coke, the relationship between crush strength and abrasion resistance may be difficult to express simply as a function. Therefore, in practical applications, evaluating the cold strength of coke usually requires taking into account both crush resistance and wear resistance, rather than relying on just one indicator. This can be achieved through various methods, such as experimental measurements and correlation analysis. .

There is no clear functional relationship, but there is a good degree of correlation: as the value of M40 increases, the corresponding value of M10 decreases