METHOD OF MANUFACTURING COMPOSITE MATERIAL FROM TUNGSTEN-CONTAINING MINERAL RAW MATERIAL BASED ON SCHEELITE CONCENTRATE

摘要

FIELD: composite materials. SUBSTANCE: invention relates to powder composite materials and compact electrode material involving aluminothermics technique. Method includes preparing charge by mixing scheelite concentrate with aluminum followed by thermal reduction, the charge being supplemented with boron compound in weight proportion to tungsten oxide contained in concentrate (0.15-0.3): 1, whereas aluminum to tungsten oxide weight ratio ranges from 0.2:1 to 0.3:1. In a particular case, boron carbide and/or oxide are used as boron compound. EFFECT: widened choice of constituents for composite materials. 2 cl