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The RIS is set on top of the centered form by hoist. "Supersacks"
of material are lowered into the hopper and the release spout freed.
The empty sack is removed and the lid is locked in position.
The machine is engaged and rotates around the form, creating a
layer of material between 1 1/2 and 2 inches (38 and 51 mm) thickness.
Simultaneously, each layer is deaerated at a rate of 600-700 strokes
per revolution using dual forks. The fork tines penetrate to a depth
of approximately 4 1/2 inches (114 mm), thus each layer is penetrated
at least twice, effectively mixing the layers and providing optimum
pre-compaction. The hopper is refilled as necessary and the process
repeated until the top of the form is reached. The RIS can be adjusted
to line various size furnaces having different dimensions.
Conventional, manual installation is both labour intensive and dangerous,
particularly with respect to silica dust. In addition, consistency
is difficult to achieve with both layering of material and uninterrupted
deaeration. |
