| 简介 |
FIELD : metallurgy.SUBSTANCE : method is implemented by layer-by-layer leaching of the rhythmic-zonal ore particles - oolites of goethite-hydrogoethite composition with grain class -0.50+0.25 mm, being loose ironstone ore produced by method of hydraulic borehole mining. After leaching under percolation conditions two separate productive solutions are produced, i.e. iron-containing and containing phosphorous and rare-earth elements.EFFECT : simple production of purpose products : iron powder, phosphorous and mineral fertilisers on its base, and strategic raw materials - rare-earth elements.7 cl, 3 dwg, 2 tbl |
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