摘要
进行了油墨凝聚、磁选的研究,在废油墨中添加磁铁矿、油酸钠和煤油,使磁铁矿和非磁性油墨通过疏水性凝聚粘附在一起,再用磁选回收。研究表明,油酸钠和煤油作为凝聚剂是磁铁矿与油墨凝聚的前提和保证,磁种磁铁矿的加入确保了聚团的磁性能用于磁选。凝聚增大油墨聚团粒度和磁性。在油墨浓度为200 g/L、磁铁矿用量2 g/L、油酸钠用量为3 g/L、煤油用量3 g/L、pH=9、凝聚搅拌时间20 min和磁场强度为1 T的条件下,油墨在磁性产品中的回收率为84.09%。
Agglomeration and magnetic separation of ink are investigated in the paper.Magnetite,sodium oleate and kerosene were added in waste ink pulp,which holds magnetite and nonmagnetic ink together through hydrophobic agglomeration.The agglomerates were then recovered through magnetic separation.The study indicates that sodium oleate and kerosene as the agglomeration reagents are the premise and guarantee for agglomeration of magnetite and ink,and magnetite as the magnetic seed ensures the magnetism of the agglomerate that can be used for magnetic separation.Ink agglomerate size and magnetism increased as a result of agglomeration.Ink recovery in magnetic product is 84.09%,when the experiment conditions are the ink density of 20%,magnetite dosage of 2 g/L,sodium oleate dosage of 3 g/L,and kerosene dosage of 3 g/L,pH=9,the agglomeration stir time of 20 min and the magnetic field intensity of 1 T.
出处
《环境工程学报》
CAS
CSCD
北大核心
2011年第5期1142-1146,共5页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(50774015)
关键词
油墨
磁铁矿
凝聚
磁选
ink
magnetite
agglomeration
magnetic separation
