FIELD: manufacturing technology.
SUBSTANCE: invention relates to the production of abrasive refractory materials, in particular to the production of a powder-alumina (corundum), and can be used in a metalworking, machine-building, chemical-metallurgical industry. Electrical aluminum wire waste containing not less than 99.5 % aluminum (GOST 14838-78), are subjected to electrospark dispersion in distilled water at a pulse repetition rate of 50 Hz, a voltage on the electrodes of 90 V, and a capacitance of 65 mcF.
EFFECT: invention makes it possible to obtain fine-grained corundum from aluminum waste with low cost, low energy costs and environmental purity of the process.
1 cl, 10 dwg, 3 ex
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