Selection of rational surface configuration For roller press tires

Abstract

Roller presses are most common pelletizing and compacting machines for fine-grained materials in metallurgy and related industries. Rollers with replaceable tires, whose effective surfaces are equipped with molding elements, are major components that directly exert a force on the material being compacted. The press surface configuration significantly influences the compaction conditions and the quality of pellets. Analysis of information sources shows that there is currently no single systematic approach to choosing the rational surface configuration for roller press tires. A large number of process and service parameters indicates that the choice of rational surface configuration for press tires should be based on multivariate analysis methods. Therefore, a systematic approach to the choice of rational geometrical parameters for roller press tires and a method that implements this approach have been developed. The method represents the problem in question as a three-level hierarchy: options for the design of tires, criteria to evaluate the rationality, and the most rational tire design. A specific example demonstrates how the proposed approach is applied to choose the configuration of pressing surfaces to promote the required parameters of charge compaction, the tires having the longest possible service life, and ensure that the press is operated within its technical characteristics. The proposed systematic approach and the method developed to implement it allow the geometrical parameters of press roller surfaces to be compared and evaluated for rationality at the design stage. The results can be used as a constituent part in the development of specialized software for the calculation and design of roller presses.