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| Application and analysis of countercurrent helix in mixture granulation
molybdenum powder automatic screening platform |
| GUO Hui-liang，XUE Cheng-da，QI Zhen-bao，HE Min，GU Lu-lu |
| Shandong Taishan Steel Group，Laiwu 271100，China |
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Abstract This paper compares the granulation effect of adding counter-current helix in cylinder mixer. The results
show that counter-current helix can increase the cumulative amount of medium and coarse particles from 70-75%
to 80-85% on the screen of 3 mm after treatment，increase the proportion of spherical particles by about 15%，
greatly reduce the proportion of rectangular and rod-shaped particles，increase the filling rate of mixer，and finally
through rationalization. It is concluded that the theoretical curve of motion after adding countercurrent helix is helical
reciprocating motion，which greatly increases the movement course and granulation time of granulating pellets
compared with previous helical motion.
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Received: 01 March 2019
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2020, Vol. 30 
