How is the storage capacity required for the tailings pond calculated?

2024-02-03 16:06:20
Tailings design, calculate the required storage capacity beneficiation plant life can be calculated as follows.

WN
V=———;;
Γη

Where V is the total storage capacity of the required tailings pond, m3 ;
W——the amount of tailings discharged by the ore dressing plant per year, t/year;
N——Design and production life of the concentrator, year;
γ——Tail mine bulk density (heap specific gravity), ton/ m3 , determined according to the data of similar tailings, if there is no data, refer to Table 1 for selection;
Tailings bulk density (heap specific gravity) γ Table 1
Serial number
Content of each grade of tailings (%)
γ (ton / meter 3 )
>2 mm
2~0.05 mm
<0.05 mm
1
2
3
4
5
6
7
<10
<10
<10
<10
<10
<10
<10
>0.25 mm more than 50
>0.1 mm higher than 50
>50
>40
>40
<50
<50
0~3
0~3
3~10
10~20
20~30
30~50
>50
1.6~1.75
1.55~1.65
1.5~1.6
1.4~1.55
1.2~1.4
1.0~1.2
0.8~1.0
η——The final storage capacity utilization coefficient of tailings pond is related to the shape of tailings pond, the number of tailings and the method of ore mining. The rough calculation can be selected in Table 2.
Storage capacity utilization η Table 2
Tailings shape and method of ore discharge
Initial
Final period
a winding valley in the narrow mountains
Wide valley, single or double side ore
Flat or hillside tailings pond, three or four sides of the mine
0.30
0.40
0.50
0.60~0.70
0.70~0.80
0.80~0.90
The tailings density of this watch is the data when γg=2.7. If γg is not 2.7, then the correction coefficient β needs to be multiplied;

γ
β=——
2.7

In addition, according to domestic experience, the gamma value data of this table is too large, and the lower limit is generally appropriate.

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