| 摘要 |
A method or apparatus for dry slag granulation of hot liquid slag using a casting apparatus comprising an endless conveyor having a plurality of casting moulds, which endless conveyor is arranged to move said casting moulds in a first section from a slag pouring zone through a cooling zone to a discharge zone and in a second section back to the slag pouring zone, comprising the continuous steps of pouring an amount of hot liquid slag into a casting mould in a position N in the slag pouring zone, moving the hot liquid slag containing casting mould in a position N+n within the cooling zone, adding solid metallic particles to the hot liquid slag containing casting mould in position N+n by dropping a determined amount of said metallic particles into the mould from a dispensing device arranged above said mould and comprising at least one hopper for storing said solid metallic particles, discharging the cooled solidified slag from the mould in the discharge zone, wherein the actual amount of hot liquid slag poured in the casting mould is measured in a position between N and N+n, wherein the speed of movement is adapted based on the measured amount of hot liquid slag, wherein the amount of metallic particles is determined based on a fixed slag/metallic particle ratio, wherein the amount of metallic particles added by the dispensing device is controlled by opening of the at least one actuated sliding gate arranged at the hopper's outlet during a time determined based on the speed and wherein the opening stroke of the at least one actuated sliding gate is determined based on the determined amount of metallic particles, the determined opening time and characteristics of the at least one sliding gate. |
