Abstract:

In order to reduce the feed sand overflow concentration of vertical sand silo and improve the

filling production efficiency，a mine in Anhui studied the problem of high concentration of overflow water in

vertical sand silo. Based on the different reasons that lead to the increase of overflow concentration，the

structure of sand silo was reformed. The optimization results show that by changing the dosing method and in⁃

creasing the central stilling bucket，the overflow of the sand silo is clear water under the condition of double

silo diversion feed sand. Under the condition of single silo sand inlet，the overflow concentration of sand in⁃

let is clear water in the early stage. When the height of sand layer exceeds 7.3 m，the overflow concentration

increases rapidly，and the overflow concentration can be reduced by reducing the treatment capacity of the

vertical sand silo.

Key words:

vertical sand silo, overflow concentration, filling station, central barrel, flocculant