| 摘要 |
FIELD: mining. ^ SUBSTANCE: invention concerns mineral enrichment and can be applied in mining industry, namely, in heap or underground leaching of metal tailings left from copper sulfuric ore dressing, as well as in safe storage of tailings. Blend composition for obtaining of pellets for sulfuric-acid leaching contains new and old tailings of copper sulfuric ore dressing, and fine dry-milled copper fusion slag and lime are used as a binder; the components are taken in a ratio, mass %: tailings 85-92, slag 5-10, lime 3-5. The process of pellet obtaining involves fine dry milling of copper fusion slag and lime. Next, the slag and lime are mixed with tailings of copper sulfuric ore enrichment with simultaneous dampening during mixing and pelleting. ^ EFFECT: obtaining pellets resistant to leaching acidic media. ^ 7 cl, 1 tbl |
