EQUIPMENT FOR THE MECHANICAL TREATMENT OF QUARRY MATERIALS FOR THE PRODUCTION OF ROAD AGGREGATES. (7) TWO POINTS OF VIEW ON GYRATORY CRUSHERS AND THE SHAPE OF AGGREGATES OBTAINED

LES EQUIPEMENTS DE TRAITEMENT MECANIQUE DES MATERIAUX EN CARRIERE POUR LA PRODUCTION DES GRANULATS ROUTIERS - 7) DEUX POINTS DE VUE A PROPOS DES CONCASSEURS GIRATOIRES ET DE LA FORME DES GRANULATS OBTENUS

Following the article by Petrini-Poli, D published in Chantiers Fr, November 1976, the author comments on the shape and so-called advantages of high-speed, low-eccentricity gyratory crushers. He recalls satisfactory operational conditions and briefly outlines the history of gyratory crushers. The operational cycle is described together with the problem arising with this type of equipment when fine crushing is needed. Remedial measures are described, among others the suppression of the stirrup in core crushers, which results in better grading performance and aggregate shape. Attention is drawn in conclusion to the number of diverse methods used to reach the same goal: materials with a shape as near that of a cube as possible to satisfy the specifications laid by the administration for road aggregates. The need is stressed for further research and close cooperation between the administrative authorities, quarry managers and equipment manufacturers. (TRRL)

  • Corporate Authors:

    STEPE

    16 rue Vezelay
    75008 Paris,   France 
  • Authors:
    • Millier, J P
    • Petrini-poli, D
  • Publication Date: 1977-5

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00302780
  • Record Type: Publication
  • Source Agency: Laboratoire Central des Ponts et Chausees (LCPC)
  • Files: ITRD, TRIS
  • Created Date: Jan 15 1980 12:00AM