General industrial indicators for sandstone -type uranium deposits

Deposit type

Boundary grade

Minimum industrial grade

Minimum recoverable thickness (m)

Stone removal thickness (m)

In-situ sandstone type uranium deposit

0.01% (square meter uranium: 1kg/m 2 )

0.03% (square meter uranium: block 3kg/m 2 ; ore body 5kg/m 2 )

5 (the buried depth of the deposit is <400, the occurrence is <5°)

5~7 (mineral layer (body)/non-mine thickness ratio>0.2)

Note: 1 The permeability of the ore layer (body) is 0.5-20 m/d. 2 The content of 0.05mm grain size in the ore layer is less than 20%. 3 The degree of mineralization in the permeable layer is less than 5g/L. 4 The groundwater level is less than 50m. 5 pressure head is greater than 50m.

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