废纸脱墨浮选槽及其射流器改造

Modifi cation on fl otation fell and its ejector for waste Modi otation fell and its ejector for waste paper deinking pulp

重点阐述南纸300t/d DIP生产线系统改造中,对脱墨浆系统的浮选槽及其射流器的改造。改造目标是在化学品及废纸原材料配比不变的情况下提高预浮选白度8.1%ISO、后浮选白度3.2%ISO,尘埃值少于250mm2/kg。本脱墨槽和射流器是在安德里兹公司奥地利格拉兹中间试验厂试验过的,到纸厂投产后还要改造,才能达到好的工艺性能。这对国内设备厂开发新产品有借鉴作用。

The modification on the floatation cell for a deinking system and its ejectors was indroduced in the transformation of 300t/d DIP production line. The modification aim was to raise the pre-floating brightness 8.1%ISO and post-floating 3.2%ISO with species less than 250mm2/kg, under the conditions of constant chemicals dosage and waste paper raw materials compositon. The flotation cell and the ejectors tested in the trial lab in Andritz A G, were required to modify when putting into production in paper mill, so as to reach a better process performance. This will be a reference for domestic machinery factories to develop new equipment.