TECHNIQUE FOR PROCESSING OF WASTE ELECTRIC BULBS Russian patent published in 1995 - IPC

FIELD: separation of solid materials. SUBSTANCE: technique involves a consecutive processing of waste electric bulbs in jaw and roll crushers. Then material is sorted by the 20 mm class material, the plus material being clean deformed bulb caps. The minus material is sent for crushing in a cone inertial crusher with subsequent magnetic separation in the 0.05-0.08 induction field. Non-magnetic fraction is sorted by the 3-5 mm class which means separation of brass-made contacts. The minus material is sized up to 1 mm and then subjected to gravitational enrichment, with no metal containing glass mass being separated and also to enrichment of the product containing tungsten, molybdenum and copper. These latter metals are then magnetically and electrically separated. EFFECT: higher efficiency and reliability. 1 cl