| 摘要 |
FIELD: mining. ^ SUBSTANCE: method for cleaning of macroporous space of break after sulfuric-acid treatment of residual or crushed hard rocks includes "flushing" of mudded rocks by low-mineralised (M up to 35 kg/m3) low-sulfuric-acid (H2SO4=1-5 kg/m3) process solutions as their traditional direction of motion in break changes. Chemical composition of flushing solutions is complemented with microadditive of humic fulvic acid complexon (50-100 g/m3). ^ EFFECT: secondary return of uranium into in-situ and heap leaching processes. ^ 5 tbl, 2 ex |
