化学机械浆碱回收苛化绿泥的压榨处理

Press Treatment of Caustic Green Mud from Alkali Recovery of Chemical Mechanical Pulp

本文介绍了化机浆碱回收苛化绿泥的处理方法,分析了化学机械法APMP制浆和烧碱法制浆苛化绿泥的不同特点。用板框压滤机代替传统的卧式螺旋离心机处理苛化绿泥,处理后的绿泥干度能提高10%~13%,残碱降低3%~5%,纯固体碱回收量约增加2 t/d。解决了绿泥干度低、黏稠等缺点,为绿泥的后续再利用提供了条件。

The treatment methods of caustic green mud from alkali recovery of chemical mechanical pulp was introduced,and the different characteristics of caustic green mud from chemical mechanical pulp and alkaline pulp were discussed in this paper.The plate and frame filter press were used to instead of the traditional horizontal screw centrifuge to process causticizing green mud.The dryness of caustic green mud after treatment with plate and frame filter press could be increased 10%~13%,the residual alkali could be reduced 3%~5%,and recovery of pure solid alkali could be increased about 2 t/d.The problems like low dryness and viscosity of green mud were solved,providing conditions for the subsequent reuse of green mud.