Open AccessApplication of The New Shape Crushing Plate in Machine Crushing Processes
Author(s) -
P. Ciężkowski,
Jan Maciejewski,
Sebastian Bąk,
Arkadiusz Kwaśniewski
Publication year - 2020
Publication title -
studia geotechnica et mechanica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.277
H-Index - 9
eISSN - 2083-831X
pISSN - 0137-6365
DOI - 10.2478/sgem-2019-0029
Subject(s) - crusher , sieve (category theory) , materials science , fineness , mathematics , composite material , combinatorics , metallurgy
The results of studies of the crushing process in a double toggle jaw crusher are presented. This process was carried out on six sets of crushing plates. The first three of them are used in industrial crushers – plates with a flat working surface and a triangular profile (in this work, under consideration were profiles with teeth angle γ = 90°). The fourth and fifth type refer to plates with a variable pitch t and teeth height with a triangular shape of the teeth. In the sixth solution, plates with variable pitch and width of the wedged teeth are proposed. The results of the basic process parameters are shown, that is, average degree of fineness n , technical performance W t , crushing energy L and crushing force F , sieve analysis of crushing product. The obtained results are the basis for the assessment of the suitability of various types of plates, especially plates with a new profile, which have an altered shape in comparison with the plates used in crushers so far. The crushing tests were carried out with the same dimension of outlet slot e r = 24 mm, close to the pitch size for plates with triangular profile. Tests were performed on the “Mucharz” sandstone. Samples from a series of blocks of different size and geometric shape were prepared. This work also presents feed mass influence on crushing process efficiency. The plates with variable pitch and width of teeth are beneficial because of lower crushing force and energy.