Effect of flotation parameters on ONP/OMG deinking efficiency

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South China University of Technology, Guangzhou 510640, China [1 ]
不详 [2 ]
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Zhongguo Zaozh Xuebao | 2007年 / 1卷 / 32-35期
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摘要：
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 JNP/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% , 50T1, 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%.
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