FIELD: process engineering.
SUBSTANCE: this invention discloses the sorting of materials. Proposed processes exploit X-rays for sorting the materials from impurities that can be used for cleaning of coal of sulphur, mercury and other impurities. In compliance with one version, specimen is prepared to decrease its size to 10 centimetres or smaller. Minimum X-ray radiation absorption of the specimen thicker ply is defined. Absorption of X-ray radiation of specimen pieces is measured to identify specimen pieces of higher absorption than that of thicker ply. Specimen pieces are sorted out from its remainder that feature higher absorption than minimum absorption of thicker ply. In compliance with another version, application of differences in factors of X-ray radiation linear absorption is disclosed for ore processing and removal of elements with greater atomic number from elements with smaller atomic numbers.
EFFECT: higher efficiency of sorting out, decreased contamination and coal ash toxicity.
15 cl, 10 dwg, 5 ex
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