| 摘要 |
<p>A method of continuously crushing and sieving slag resulting from production of steel, said method substantially including a preparatory coarse crushing (KG), a coarse sieving (SG) followed by a separation of the largest pieces of steel of the slag by a first separating step (U1) and a completing final sieving (SS) where the crushed slag is separated into fractions comprising their respective predetermined granular size. By the method the content of the slag of steel or iron is separated therefrom at a plurality of separating steps (U1, U2, U3, P1, P2, PS). The slag passes a plurality of crushing, sieving and separating steps in such a manner that each crushing step (KM; KF) is followed by a separating step (U2; P2) prior to the succeeding crushing or sieving step. The slag separated at any arbitrary separating step (U1, U2; P2) passes repeatedly both a steel particle separating step (P1, PS; P2), where the free steel particles are separated, and the crushing step (KM; KF) associated with said separating step. In this manner it is possible to separate an amount of the steel/iron content in the slags which compared to previously is unusually high with the effect that the slags are particularly suited for use in connection with production of road surfaces.</p> |
