CONTHICK™ – hybrid screen decanter
CONTHICK screen decanter
Efficient separation plus pre-thickening
The Siebtechnik Tema CONTHICK screen decanter is a hybrid machine, consisting of a solid bowl in the product feed zone and a screen bowl fitted downstream.
Solid materials are separated by sedimentation in the solid bowl and thickened at the same time. The product is then washed and dewatered up to the mechanically separable dewatering limit. Another special feature of the CONTHICK is its overhung mounting, enabling easy cleaning and fast access to the parts in contact with the product. As a result, maintenance costs and times are significantly reduced.
The second stream of liquid is drained off through a separate drain hole.
All CONTHICK centrifuges are individually adapted to suit product conditions and system requirements.
Operational behaviour and mechanical characteristics
The design of this centrifuge is based on the technology of our CONTURBEX screen scroll centrifuge, with the addition of a pre-thickening stage. The aim is high separating efficiency, even with slightly-concentrated suspensions, and a high yield of fine contents.
The main task to be performed by this centrifuge is the separation of solid matter and liquids from suspensions. The suspension is fed into the pre-thickening stage of the centrifuge through an inlet pipe and apertures in the middle of the scroll body.
The main liquid content is drained off through an adjustable weir at the back of the solid bowl to obtain a clear filtrate.
The solid matter is pre-thickened and conveyed by the worm to the screening section, where residual dewatering and product washing takes place (if necessary). The liquid streams from the solid bowl and screening section are individually or jointly drained off by means of a single- or dual-cyclone separator.
The loss of solid material is relatively low and can be further reduced by returning the screening filtrate to the feed. The solid matter is conveyed by the scroll to the solids discharge housing via the cylindrical screening section.
The centrifuge is fitted with a special profile slotted screen cloth. Depending on the application, a special screen plate can alternatively be used. In all cases the screening elements can be very easily exchanged, without having to disassemble the machine or the rotating parts.
Technical specification
| CONTHICK | |||||||
|---|---|---|---|---|---|---|---|
| Type | CT | 240/180 | 320/240 | 450/340 | 600/450 | 800/600 | 1000/750 |
| intermediate size on request | |||||||
| Length | approx. mm | 1150 | 1200 | 1550 | 1800 | 2250 | 2700 |
| Width | approx. mm | 1200 | 1200 | 1550 | 2000 | 2100 | 2660 |
| Height | approx. mm | 800 | 850 | 1100 | 1300 | 1800 | 2100 |
| Weight | approx. kg | 700 | 750 | 1300 | 2000 | 4200 | 7500 |
| subject to change without prior notice | |||||||
Application
Advantages
- Continuous operation
- High yield/minimum loss of solid matter
- Excellent washing results
- Mother liquor and washing liquid can be separated independently from each other
- Little residual moisture
- Easy cleaning
- Easy replacement of screens without dismantling the scroll
- Flexible drive concept
- High machine availability
- Minimum maintenance
- Long service life
