Gabbro-diabas, high-strength material, is raw material for macadam production. The main purpose of usage is road concrete mix production.
Asphalt quality requirements have increased in Russia lately. So many manufactures start to use the European recipe of road concrete mix.
Process flowsheet of macadam production consists of four-stage crushing with a closed cycle in the II or III stage based on company SANDVIK aggregates (in particular, crushers: jaw crusher Jawmaster 1511, cone crusher H4800, H6800).
Depending on consumers’ requirement, impact crusher Merlin VS1107 is used in the production process. It allows to reduce macadam’s flakiness up to 12%.
Volume of output for 2008 is 1 079 553 t.