Defining and Optimizing a Crusher; stroke and rotation Speed.

At each recession of the head the void left at the throat is filled by particles flowing in from the surge chamber. This procedure is repeated until the particles at the periphery of the attrition chamber are discharged. With each succeeding gyration, the length of stroke and timing of the movement of the head are such that the lower liner is withdrawn faster than the free fall velocity of the previously crushed mass. Since the speed of descent is relatively slow at the beginning of the fall, the speed of gyration can be timed so that a half revolution of the head can be made before the crushed material falls any appreciable distance. This permits the lower liner to recede and return to hit the previously crushed mass as it is falling, scattering it so that a new alignment of particles is obtained prior to another impact. This reorientation of the particles at each impact results in a high degree of uniformity in both size and shape and produces a cubical shaped product.
In recent years many attempts have been made to copy the Nordberg Gyradisc crusher principle of interparticle comminution with little or no success. In designing the Nordberg Gyradis crusher a total concentration of effort was devoted to matching crusher to job. The Nordberg Gyradisc crusher is the only crusher exclusively designed to support the magnitude and direction of the forces encountered during interparticle comminution. Others have merely modified the crushing cavities on existing cone crushers. This less than total effort has met with poor performance and numerous structural failures.

 

Carbonate-Hosted Deposits Identifying Carbon Minerals Character of product delivered by the hammermill Natrolite, Scolecite & Thomsonite Composition, Crystallization & Structure Crusher Packing Assaying Prospecting using Magnetic Methods Radiometric Methods of Prospecting Magnesite Composition, Crystallization & Structure Shrinkage Stoping Disclosure Amphibole Group - Orthorhombic Secction, Antothopyllity and Amphibole Specific Gravity of Minerals Triclinic Section – Rhodonite Composition & Structure Carbonate-Hosted Deposits