| 摘要 |
Tempering apparatus having disc-free stirring tool ( 8 ) with plate-shaped arms ( 12, 13 ). The upper side ( 14 ) of each arm ( 12 ) has a different geometrical configuration than the lower side ( 19 ) thereof. Each neighbouring arm ( 13 ) has the opposite configuration of the upper and lower sides ( 23 and 24 ). The mass is thereby given an intermittent up- and downwards movement in the mass treatment chamber ( 2 ) and the tempering capacity of the apparatus is improved.
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