FIELD: mining.
SUBSTANCE: in the result of grain size wet separation, the following fractions are obtained: coarse +10 mm, intermediate -10 +0.5 mm and fine -0.5 mm. Coarse fraction is subjected to mineralogical separation with segregation of mineralised and unmineralised fractions. Mineralised fraction is weighted, crushed and grated. Gold content is defined by assay test. Unmineralised fraction is weighted and sent to stock pile. Intermediate fraction is subjected to separation according to its density; heavy (heavy concentrates) and light fractions are separated. Grains of free gold are extracted from heavy fraction under binocular microscope. Then, heavy concentrates are grated and gold content is defined by assay test. Light fraction is crushed and grated, gold content is defined by assay test. Fine fraction is dehydrated, weighted, grated to 200 mesh, gold content is defines by assay test.
EFFECT: higher accuracy and ecological friendliness; simplification of the method.
3 cl
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