Larox® RT-GT filter

Larox® RT-GT filters offer all of the advantages of standard RT filters, including co-current or counter-current washing, reflux washing, vibration, all forms of mechanical compression, and either hot gas or infrared drying. These filters are highly configurable and – just like standard RT filters – can be used in many different combinations for multi-step processing.

The housing is normally operated with a few millimeters of water gauge over-pressure inside. Nitrogen is pulled from the housing during the vacuum stroke by the vacuum pump, where the condensate is removed. From there, the so-called dry nitrogen is returned to the housing. A very small amount of replacement nitrogen is required to compensate for the nitrogen that exits with the wet filter cake.

The floor and roof of the housing are rounded while the walls are flat for easy cleaning. Hinged windows on the sides and lights on the roof provide visibility. The windows also provide local access. Clean-in-place is a standard option and all dead spots are eliminated to ensure sanitary operation – windows and nozzles are angled to drain back into the housing and internal surfaces can easily be polished to a specified level.

All Metso Outotec RT horizontal vacuum belt filters provide discrete multi-step processing of a wide range of products, as well as enhanced dewatering through cake vibration, mechanical compression, or hot air drying.

Slurry separation

Cake washing

• Co-current
• Counter-current

Mechanical dewatering

• Vacuum seal belt (VSB)
• Vacuum press belt (VPB)
• Press belt (PB)
• Vibration

Thermal drying

• Hot air or gas drying (convection)
• Infrared drying (radiation/convection)