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Article Dans Une Revue Nordic Pulp & Paper Research Journal Année : 2022

Physical meaning of cutting edge length and limited applications of Specific Edge Load in low consistency pulp refining

Résumé

Specific edge load (SEL) is the extensively employed theory to characterize the refining results in low consistency pulp refining. But the physical meaning of its core parameter, cutting edge length (LC), is not very clear, resulting in the limited applications of SEL in pulp refining. In this study, the physical meaning of LC was investigated in two aspects, total bar sliding length per cycle and total equivalent bar length, as well as the application of two refining intensities related to it, SEL and the net tangential force per bar crossing zone (fnett). After the comparison of the refining intensities and the experimental results, it was found SEL calculated by the LC with physical meanings can only properly characterize the results of the pulp refining conducted by straight bar plates with constant angular parameters. While, for the situations of varied angular parameters, the fnett and Modified Edge Load (MEL), calculated by the edge length expanded empirically by Meltzer, can also better characterize the refining process, either for the evolution of fiber length or the global refining effect (pulp Schopper Riegler). In addition, the application of fnett can be potentially expanded to other refiner plates to gain a better understanding and optimization of the pulp refining process.
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Dates et versions

hal-04112263 , version 1 (31-05-2023)

Identifiants

Citer

Huan Liu, Jean-Claude Roux, Jixian Dong, Chuanwu Duan, Kai Qi. Physical meaning of cutting edge length and limited applications of Specific Edge Load in low consistency pulp refining. Nordic Pulp & Paper Research Journal, 2022, 37 (2), pp.250-263. ⟨10.1515/npprj-2021-0086⟩. ⟨hal-04112263⟩

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