| 摘要 |
A method of starting a vertically situated cylindrical cooler for powered material such as cement within which material to be cooled moves upward through the cooler by being propelled by rotatable spiral flights. The method is advantageously used when the cooler, because of a crash stop, is prevented from starting normally because of an excess of packed material located at its bottom, thus preventing the spiral flights from rotating. According to the method of the invention, a compressed gas is introduced into the bottom portion of the cooler in a quantity sufficient to aerate the packed material. Once the material is sufficiently aerated the spiral flights are able to be rotated, thereby propelling the material upward through the cooler.
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