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Andritz Centrifuges

Andritz – Centrifuges are manufactured to handle the most difficult to dewater sludges with automated controls and torque control to allow operation with minimum amount of operator attention and maintenance. Field replaceable tungsten carbide feed and discharge ports, field replaceable wear tiles with 20,000 hour wear guarantee and 316L stainless steel bowl  provide a rugged and dependable machine.

Description

Andritz Centrifuges

Andritz – Centrifuges are manufactured to handle the most difficult to dewater sludges with automated controls and torque control to allow operation with minimum amount of operator attention and maintenance. Field replaceable tungsten carbide feed and discharge ports, field replaceable wear tiles with 20,000 hour wear guarantee and 316L stainless steel bowl  provide a rugged and dependable machine.

Additional Info

Its specific design and open flight permit use of the entire volume and provide extremely good clarification results; extraction of sludge is simplified by the angle, and the acceleration (3000G) is a good compromise between the highest dryness and the right power consumption.

An unrivalled operational convenience, The main operating parameters can be adjusted independently of one another and with high accuracy : bowl speed (efficiency of solid/liquid separation), relative scroll speed (residence time, hence dryness), pond depth (clarification).

Well-balanced operating costs: The polymer dosage is optimised. Flocculation is carried out at the feed in order to leave sufficient contact time for formation of resistant flocs; the distributor (feed chamber) shape avoids swift polymer passage with centrate whose residence time in the decanter is very short. We provide advice and investigate your project with you Sizing is performed according to sludge type, flow, expected performance, operating time, power consumption, and polymer dosage.

DECANTER CENTRIFUGE GENERAL CHARACTERISTICS
The ANDRITZ decanter centrifuge is composed of a rotating assembly, driven by electrical motors, supported by two pillow blocks on a base frame. The rotating assembly includes a cylindrical and conical bowl, a scroll conveyor and a gear box, which creates the differential speed between the scroll conveyor and the bowl.

OPERATING PRINCIPLE

[Andritz Oper Princ] The ANDRITZ decanter is designed for a continuous attention-free operation, through a specific electronic system. The shutdown of the decanter can be programmed outside of the operators’ working hours on site and operating 24 hrs. a day is, of course, possible.

HIGH PERFORMANCE SCROLL

[Andritz High Peformance Scroll] The ANDRITZ High Performance scroll has been designed to increase solids residence time in the process area (to reach lower moisture content) while optimizing the clarified liquid flow, reducing hydraulic  turbulences  which hinder fines and suspended solids capture.

[andritz open flight] Thanks to the open flight design, the clarified liquid travels axially towards the discharge area over the whole scroll section, instead of being led  by a  full  flight  around the  scroll hub  and  in  a  direction opposite to the scroll displacement.

The  low  velocities  and  the  laminar  characteristics  of  the  flow, drastically reduce the turbulences inside the bowl thus enhancing fine solids capture rate.

WEAR AND ABRASION PROTECTION

[anditz protection] All  the  rotating assembly parts  facing possible abrasion are  protected by  the  most  resistant coatings

(tungsten carbide).