磁铁矿用于办公废纸脱墨的研究  

A Study on Deinking of Office Waste Paper with Magnetite

作　　者：郑其[1] 车小奎[1] 段锦[1] 陈松[1] 陈伟东[1] 

机构地区：[1]北京有色金属研究总院,北京100088

出　　处：《中国造纸学报》2010年第4期42-46,共5页Transactions of China Pulp and Paper

基　　金：国家自然科学基金资助项目(50774015)

摘　　要：研究了疏水性磁铁矿用于办公废纸脱墨的选择性凝聚技术。利用柴油使油墨与磁铁矿发生凝聚,然后采用磁选法实现油墨(油墨与磁铁矿聚团)的分离。在废纸浆中添加柴油作凝聚剂,柴油选择性地将疏水性磁铁矿与油墨通过液桥连结在一起,且形成大颗粒的球体,再用磁选脱除。研究结果表明,在pH值为9、浆浓2%条件下,加入占废纸质量0.04%的疏水性磁铁矿和0.4%的柴油可获得96%以上的油墨去除率。Hydrophobic magnetite was used for selective agglomeration deinking of the office waste paper.Diesel oil was used to agglomerate the ink and magnetite,and then the inks（ink and magnetite agglomeration） were separated by using magnetic separation technology.The diesel as coagulant was added to the waste paper pulp,and selectively combined hydrophobic magnetite and the inks together through the liquid bridge,the large sphere particles were produced and removed subsequently.Studies indicated that it can achieve more than 96% of the deinking rate when adding the hydrophobic magnetite of 0.04%（on pulp） and diesel of 0.4% under pH value of 9,pulp consistence of 2%.

关 键 词：疏水性磁铁矿 柴油 选择性凝聚 磁选脱墨 

分 类 号：X793[环境科学与工程—环境工程]