Polishing Machine | Pretreatment for Metal Scrap Recycling in Melting & Casting Industry The polishing machine is designed for surface grinding and cleaning of scrap aluminum, scrap copper and other metal scraps. It efficiently removes surface oxide scale, oil stains, coatings, burrs and adhered non-metallic impurities. Raw materials after polishing pretreatment can greatly reduce slag formation during smelting, cut down impurity content in the furnace, improve molten metal purity, lower consumption of smelting additives, steadily upgrade the quality of finished aluminum ingots and copper ingots, and realize high-efficiency recycling of metal waste. #scrap #recovery #melting #furnace - @kangyuan_equipment