| 简介 |
FIELD : mining.SUBSTANCE : invention relates to the field of enrichment of natural resources, particularly to enrichment of virgin, non-ferrous and rare metal ores and can be used for processing of other kinds of metallic and non-metallic raw materials. The method of enrichment of natural resources includes crushing of ore in breakers, extraction of minerals of higher density out of crushed ore, removal of gangue material and light mineral fractions into the dump. Extraction of minerals of higher density out of crushed ore after preliminary recrushing and grinding of the same is effected by implementation of the vibroconcentration process with subsequent X-ray spectral grading of vibroconcentration refuses and removal of X-ray spectral grading refuses into the dump. The enriched product of the vibroconcentration process is subject to at least single-stage recleaning vibroconcentration operation with obtaining concentrate and the middling product. The middling product of the recleaning vibroconcentration operation and the enriched product of X-ray spectral grading are returned to the process of recrushing and grinding in a closed cycle. Concentrate of the recleaning vibroconcentration operation is delivered to aftertreatment. Prior to the recrushing and grinding ore and concentrate are subject to pre-breaking by high-contrast and high-temperature heat treatment by the flow of incandescent gases or superheated steam.EFFECT : increase of extraction of commercial components, improvement of conditions for releasing minerals, increase of ecological safety of processing, improving and cost saving of the enrichment technique of natural resources.5 cl |
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