Patent ID: 6595443
Filing Date: 2003-07-22
Classification: B02C

Abstract:
A method of crushing material in a crushing plant using multistep crushing to produce a crushed product having a stipulated maximum grain size comprising the steps of:providing a crushing plant having a first crushing station, an intermediate storage for receiving at least a portion of the crushed product from the first crushing station, and a second crushing station for receiving material from the intermediate storage, crushing material at the first crushing station, conveying from the first crushing station to the intermediate storage at least that portion of the crushed product whose size exceeds the stipulated maximum grain size and conveying at least a portion of any of the balance of the crushed product to a material outlet, monitoring the amount of material in the intermediate storage, increasing the degree of reduction of the first crushing station and, thus, reducing its capacity if the amount of material in the intermediate storage exceeds a first predetermined amount, and decreasing the degree of reduction of the first crushing station and, thus, increasing its capacity if the amount of material in the intermediate storage falls below a second predetermined amount.