关键词: 新型起泡剂250A, 铜矿石, 松醇油, 浮选

Abstract: The 250A is a new，inexpensive，readily biodegradable，less polluting copper frother which is newly developed by China University of Mining and Technology.To test its efficiency，copper flotation experiment were carried out on a certain low grade copper ore from Tongling in Anhui Province.Under the condition that grinding fineness of -0.074 mm account for 75%，a condition experiment was carried out to estimated dosage of roughing and a comparative test was carried out to compare flotation effect of two frothers with reference to field process.The results show that，under situation of the total dosage of 250A 100 g/t，copper concentrate contained 21.56% Cu and recovery rate of 87.32% was obtained；Correspondingly，under condition of the total dosage of pine camphor oil 150 g/t，the copper concentrates contained 21.67% Cu and recovery rate of 87.17% were achieved.Obviously，250A is high efficient and helpful to reduce cost and increase benefit for copper enterprise.

Key words: New type of frother 250A, Copper ore, Pine camphor oil, Flotation