| 摘要 |
FIELD: mining. ^ SUBSTANCE: method provides grading by size and quality, separation and processing of small fractions with subsequent heat treatment of wastes obtained; the small fractions of amber are graded in saline solution on the step-by-step basis, first in lean solution, with concentration from 1 to 5 % and then in solution with increased concentration (up to 25%) for separation of organic and then mineral admixes; next the raw material is sanded for separation of the oxidation film and grinding the same, sanding and grinding of small fractions of amber being effected in inert medium. ^ EFFECT: wider possibilities of utilisation of amber and possibility to perform integral wasteless processing of amber of all size fractions. ^ 1 ex |
