CAJ | 학술논문

研究了废报纸脱墨浆过氧化氢一过氧化氢（PP）、过氧化氢-甲脒亚磺酸（PF）两段漂白工艺。结果表明，废报纸脱墨浆PP漂白中第二段过氧化氢漂白的适宜工艺条件为：浆浓20％，漂白时间2．5h，温度60℃，乙二胺四乙酸（EDTA）用量0．2％，硫酸镁用量0．05％，硅酸钠用量0．5％，过氧化氢用量4％，氢氧化钠用量0．5％，漂后浆白度71．5％（ISO）；PF漂白中第二段甲脒亚磺酸漂白的适宜工艺条件为：漂白温度60℃，漂白时间40min，浆浓10％，甲脒亚磺酸（FAS）用量1．6％，NaOH用量0．8％，漂后浆白度68％（ISO）。
연구료폐보지탈묵장과양화경일과양화경（PP）、과양화경-갑미아광산（PF）량단표백공예。결과표명，폐보지탈묵장PP표백중제이단과양화경표백적괄의공예조건위：장농20％，표백시간2．5h，온도60℃，을이알사을산（EDTA）용량0．2％，류산미용량0．05％，규산납용량0．5％，과양화경용량4％，경양화납용량0．5％，표후장백도71．5％（ISO）；PF표백중제이단갑미아광산표백적괄의공예조건위：표백온도60℃，표백시간40min，장농10％，갑미아광산（FAS）용량1．6％，NaOH용량0．8％，표후장백도68％（ISO）。
The technology of hydrogen peroxide-hydrogen peroxide （PP） two stages bleaching and hydrogen peroxid-formamidine sulphinic acid （PF） two stages bleaching of waste newspaper deinked pulp were investigated emphatically. The results showed that the optimum bleaching conditions of the second P stage in the PP two stages bleaching were determined as follows： bleaching temperature was 60℃, with 1-1202, Na2SiO3 and NaOH dosage on oven dry pulp of 4%, 0.5%, and 0.5%. Other parameters such as pulp consistency, bleaching time, EDTA and MgSO4 dosage on oven dry pulp were kept at constant at 20%, 2.5 h, 0.2% and 0.05%, respectively. So the brightness of this bleached pulp was up to 71.5% （ISO） under the optimum condition. In addition, the optimum bleaching conditions of the second F stage in the PF two stages bleaching were pulp consistency of 10%, bleaching temperature of 60℃, bleaching time of 40 min, FAS and NaOH dosage on oven dry pulp of 1.6% and 0.8%. And then the resulting pulp was obtained with the brightness of 68% （ISO）.