浮选条件对ONP/OMG废纸浮选脱墨效果的影响  

Effect of Flotation Parameters on ONP/OMG Deinking Efficiency

作　　者：李荣刚[1] 陈克复[1] 李擘[1] 陈奇峰[1] 官日彬[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室

出　　处：《中国造纸学报》2007年第1期32-35,共4页Transactions of China Pulp and Paper

摘　　要：利用实验室研制的高浓碎浆机和浮选脱墨槽研究了旧报纸(ONP)/旧杂志纸(OMG)脱墨浆的主要浮选条件。优化后的浮选条件为:浆料浓度1.2%,时间6 min,温度50℃,空气流量2.0 m3/h(气浆比50%),pH值8.5,进浆流速3.5 m/s。在优化的浮选条件下,ONP/OMG废纸脱墨浆的白度由49.0%提高到59.2%,残余油墨粒子浓度由875.6 mg/kg减少到234.6 mg/kg,理论脱墨效率达到84.4%。The effect of flotation parameters such as flotation consistency, temperature, flotation time, air to pulp ratio, turbulence level （velocity of pulp flow）, and pH on ONP/OMG deinking efficiency was studied by using a high-consistency laboratory pulper and a laboratory deinking cell developed by ourselves. The optimized flotation conditions are： flotation consistency 1.2%, 50℃, 6min, air to pulp ratio 50%, velocity of pulp flow 3.5m/s and pH 8. 5. By using the optimized pulping and flotation conditions, the deinked pulp brightness can reach to 59.2% ISO, 10.2% ISO higher than that of the control, the effective residual ink concentration is 234.6 mg/kg, which is lower than 875.6 mg/kg of the control, theoretical deinking efficiency is up to 84.4%.

关 键 词：旧报纸 旧杂志纸 浮选脱墨 参数优化 

分 类 号：TS744[轻工技术与工程—制浆造纸工程]