Study of Flotation Deinking Efficiency of Old Newspaper and Old Magazine

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The effect of flotation parameters such as flotation consistency, temperature, flotation time, air to pulp ratio, velocity of pulp flow (turbulence level), and pH on old newspaper/old magazine deinking efficiency was studied by using a laboratory deinking cell developed by ourselves. The optimized flotation conditions were: flotation consistency 1.2%, 50°C, 6min, air to pulp ratio 50%, velocity of pulp flow 3.5m/s and pH 8.5. By using the optimized flotation conditions, the deinked pulp brightness could reach 59.15%ISO, 10.18%ISO higher than that of the control, the effective residual ink concentration was 234.65 mg/kg, which less heavily than 875.56 mg/kg of the control, theoretical deinking efficiency was up to 84.42%.

Info:

Periodical:

Advanced Materials Research (Volumes 295-297)

Edited by:

Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu

Pages:

2205-2209

Citation:

R. G. Li et al., "Study of Flotation Deinking Efficiency of Old Newspaper and Old Magazine", Advanced Materials Research, Vols. 295-297, pp. 2205-2209, 2011

Online since:

July 2011

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Price:

$38.00

[1] Altaf H B; Zhan H Y; Wang S F et al. Cleaning Efficiency of a Deinking Line. Transactions of China Pulp and Paper, 2002, 17(1), 55-59.

[2] Francois J; Saint A. Hydrodynamics of Deinking Flotation. International Journal of Mineral Progressing, 1999, 56(1), 277-316.

DOI: https://doi.org/10.1016/s0301-7516(98)00050-7