Filtration aids

Fibre flocks are used as pre-coats in wet filtration systems. They mask and bridge the open mesh in metal screens and loosely woven filter cloths.

Our filtration aids provide a number of benefits. For example, flocks must be easily dispersible, able to coat the mesh evenly and handle strongly acidic or alkaline conditions. Cellulose flocks are also resistant to cold weak acid and hot alkaline filtration liquors, and are suitable for filtering alumina plating solutions, silicates and caustic solutions. Cellulose flocks also absorb microscopic impurities and 100% of the emulsified oil in boiler condensates.

Because the flock has virtually no ash content, burning allows the metal and metal catalysts trapped within the filter flock to be reclaimed. Precision cut fibres also reinforce non-woven mats and papers used in oil, air and specialist filters such as dust masks and aircraft filters.

Some of the grades in current usage are cellulosic flocks WP 60 and RM 60, and V 6 precision cut viscose fibres.