| 摘要 |
PURPOSE:To improve the recovering rate of sensible heat from molten slag by streaming downward the molten slag onto plural water-cooled rolls and forming the thin-layered broad flow of the molten slag at all times irrespectively of the change in the amt. of the molten slag. CONSTITUTION:Molten slag is required to be thinly layered and broadened to have a larger specific area since the molten slag has small heat conductivity in the stage of recovering the sensible heat possessed by the molten slag. Plural rotary water-cooled rolls 12A-12C are disposed in a right angle direction at required intervals under the position where molten slag 2 flows down from a slag spout 4 and side plates 16 are placed on both side faces thereof to form a slag pool 2P for the above-mentioned purpose. The slag 2 flows down in the broad and thin layer complying with the length of the water-cooled rolls from the space between the rolls 12A and 12B or between 12A and 12B or 12B and 12C according to the amt. of the slag 2. The thin and broad slag flow is always formed without allowing the passage of lumped foreign matter 10 between the rolls and therefore the recovery of the sensible heat from the slag and the formation of fine grains by water or wind granulation are efficiently accomplished. |
