作　　者： ; ; ; ; ;

机构地区： 广西大学轻工与食品工程学院

出　　处： 《现代化工》 2010年第7期51-53,共3页

摘　　要： 采用附聚-磁选技术对混合办公废纸进行脱墨,考察了影响脱墨效果的各因素,并对油墨附聚物进行了分析。结果表明十八醇能将分散的油墨颗粒凝聚为体积较大的附聚物,而添加磁铁粉可以明显改善油墨附聚物的磁性。优化脱墨工艺条件为:十八醇用量(质量分数,下同)2%,磁铁粉用量0.1%,附聚浆浓4%,附聚时间45min,附聚温度70℃,磁选机磁场强度1.1×104Gs,此条件下脱墨率可达90.24%。红外光谱表明细小油墨颗粒的附聚过程是物理作用。 The agglomeration and magnetic deinking technology is used to remove ink particles in mixed office paper waste. The effects of several factors on deinking efficiency of mixed office waste are studied, and the toner agglomerates are also analyzed. The results show that octadecanol can make small ink toner particles to coagulate into bigger bulbs,while addition of magnetite powder can improve the magnetism of toner agglomerates. The optimal process conditions are as follows： octadecanol amount of 2%, magnetite powder amount of 0. 1%, pulp consistency of 4%, agglomeration time of 45 minutes, agglomeration temperature of 70℃, applied magnetic field intensity of 1.1 × 10^4 Gs, and with the above conditions the deinking rate level can reach 90. 24%. The infra-red analysis shows that the agglomeration and magnetic deinking process is a physical one.

关 键 词： 脱墨 混合办公废纸 附聚 磁分离

领　　域： [环境科学与工程]