| 摘要 |
FIELD: mining. ^ SUBSTANCE: during technological charting of ore types there additionally set is maximum size of separation class, at which lumps with discrete distribution of useful component have the content of useful component, which is close to the board one. Also, content of useful component is set in lumps with uniform distribution of useful component, and during lump classification the quality of low-grade ores is brought to the quality of ores of rich block, thus additionally changing the share of lumps in enriched product with discrete distribution of useful component. ^ EFFECT: invention allows involving a wide range of poor complex ores during extraction of rich well-enriched ores, which, as a rule, restrain the development of front of mining operations, and providing the quality stabilisation of the charge of ore flow supplied to concentration plant. ^ 3 dwg |
