MODERNIZATION OF ARMOR LINING THE CONE CRUSHERS FINE CRUSHING
At JSC «Stoilensky GOK» modernization of lining armor cone crushers Sandvik CH880 fine crushing. Operation of small crushing crushers with lining armor EEF / EF showed their sufficiently high performance for the initial ore and the finished product, but also revealed two significant drawbacks: the instability of the output parameters of crushing and through wear. The new HR/HC/68 lining with modified geometry and increased hardness of the material takes into account these disadvantages. The purpose of this study is to analyze the results of industrial tests to increase the life and productivity of the Sandvik CH880 crusher by upgrading the lining armor, as well as to determine the method for calculating the specific consumption of metal linings. According to the results of industrial tests established: the replacement of the lining improved the quality of crushing: the productivity of the finished class increased by 5.9%, the size of the crushed product decreased by 3%, the circulating load decreased by 14%; the average operating time of new armor under load was 509 hours, old armor — 439 hours; the annual economic effect of the modernization of the lining exceeds 48 million rubles. For the theoretical determination of specific consumption of metal lining adopted methodology based on the application of the hypothesis of the fatigue theory of wear on the independence of the damage caused by particles of abrasive material and projections of the pieces, and their linear summation. Adapted to cone crushers of fine crushing for ferruginous quartzites KMA method of determining the specific consumption of armor gave a good convergence of the results (deviations do not exceed 5%) with the actual indicators of the resource in the process of industrial tests of the experimental batch of linings.
: Teryekhin E. P., Tulinov R. A.
Teryekhin E.P., Candidate of Technical Sciences,
Assistant Professor, e-mail: email@example.com,
Gubkin branch of National University of Science and Technology «MISiS»,
309186, Gubkin, Russia,
Tulinov R.A., Chief Engineer of Repair Complex,
JSC «Stoilensky GOK», 309530 Stary Oskol, Russia.Key words
Modernization, cone crusher of fine crushing, lining armor.References
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