Influence of the Compression Length on the Ultimate Stress in the Process of Mechanical Agglomeration of Dry Ice

This paper presents the results of research on improving the efficiency of the mechanical agglomeration through optimising the distance to which the ram approaches the die face in the final position. The focus of this study is the influence of the compression length on the value of the ultimate stress in the process of mechanical agglomeration of crystallized carbon dioxide. The first part of the paper proposes a model describing the influence of the geometric parameters of the residual amount of material which must remain in the cylinder on the value of axial force during subsequent compression phase of the process. The research part of the paper presents the empirical research results to verify the proposed model. The results of the work will be used to determine the influence of the described geometrical parameters of the dry ice residue on the axial force value. The derived mathematical model will be used for defining the design requirements as the starting point for the design and building of dry ice compression and granulation machines.