Interstroyproekt CISC (Russia):

Spiridonov P. A., Engineer

Zakharenko O. V., Deputy General Director

E-mail (common): interstroyproekt@mail.ru

The article describes a flowsheet for processing difficult-to-treat non-recyclable quarry fines, which uses special methods of screening substandard fines and vibration pulse impacts on the material being crushed, to produce high-grade 5–10 mm ballast. These methods are implemented in the proposed mechanical flowchart of the process by including high-frequency vibrating screens ensuring efficient screening with dewatering of the oversize feed coming in for crushing. To produce high-grade ballast a special low reduction ratio vibrating crusher has been developed with a crushing chamber configuration to modify the shape and size distribution of the crushed material which represents predominantly ballast of cubic stone chips with a low content of flaky grains. The article also provides a description of the proposed flowsheet, as well as qualitative and quantitative performance indicators of the ballast production process. Furthermore, it shows the ballast production testing results for the above flowsheet, and these results corroborate the quantitative and qualitative indicators, equipment specification requirements and grade of the crushed product as provided in the operational regulations.

1. Arsentyev V. A., Vaisberg L. A., Shuloyakov A. D., Romashev A. O. Obogashchenie Rud, 2012, No. 5, pp. 51–54.