| 摘要 |
This invention relates to a method for filling particulate material in vertical tubes ( 1 ) where the velocity of fall of the material ( 4 ) is reduced by having it glide down a rotating spiral duct ( 2 ) or by gliding down a rotating inner tube ( 5 ) with openings above the bottom ( 6 ) through which the material can fall out. The inner tube ( 5 ) is filled with the particulate material ( 4 ). After the material has fallen out of the spiral duct ( 2 ) or the inner tube ( 5 ), it can fall towards the tube's ( 1 ) wall during the drop onto the top layer of filled material.
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