废旧书刊纸脱墨中浮选条件的优化(英文)  

OPTIMIZATION OF FLOTATION PARAMETERS IN OLD BOOK PAPER DEINKING

作　　者：李荣刚[1] 陈克复[1] 李擘[1] 陈奇峰[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：《陕西科技大学学报（自然科学版）》2006年第5期8-13,共6页Journal of Shaanxi University of Science & Technology

摘　　要：利用实验室研制的高浓碎浆机和浮选脱墨槽研究了国产废旧书刊纸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1.45 m3.h-1(气浆比40%),pH值11.0,进浆流速5.0 m.s-1。在优化的浮选条件下,国产旧书刊纸脱墨浆的白度由67.31%ISO提高到77.01%ISO,白度增值为9.69%,残余油墨粒子浓度由437.84 mg.kg-1减少到175.26 mg.kg-1,脱墨效率达到59.97%。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 domestic old book paper 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℃, 6 min, air to pulp ratio 40%, velocity of pulp flow 5.0 m ·s^-1 and pH 11.0. By using the optimized flotation conditions, the flotation deinking pulp brightness can reach 77.01%ISO, 9.69 %ISO higher than that of the control, the effective residual ink concentration is 175.26 mg · kg^-1 , which less than 437.84 mg ·kg^-1 of the control, deinking efficiency is up to 59.97%.

关 键 词：旧书刊纸 浮选脱墨 浮选参数 洗涤 

分 类 号：TS744[轻工技术与工程—制浆造纸工程]