Презентация на тему Krauss-Maffei Pusher Centrifuges

basics of pusher centrifuges
Double filtration technology
Process features
Mechanical features
Controls
References
Optional Features

Size: 80 - 2000 µm
Feed Solids Concentration: > 20 %

wt (crystalline products)
Solids Throughput: up to 150 t/h
Basket Diameter: 250 mm – 1250 mm
Solids Recovery: up to 99 % wt

Applications:
Bulk Chemicals (Soda applications, NaCl etc.)
Agro Chemicals (KCl, Ammonium sulphate, Urea etc.)
Platics/ related (ABS, POM, Adipic acid etc.)
Foodstuff/ related (Sodium hydrogene carbonate, Phosphoric acid etc.)

outlet with separation of liquids
Slurry inlet (feed pipe)
Flanged solids

outlet

Cake wash and basket rinsing pipe

Process housing with inspection covers

Utility connections all on front side

pump
Main motor
Dampers
Base frame serves as oil reservoir
Oil cooler
Bearing block

(cartridge design)

Main shaft and pusher shaft sealing

Terminal box

first stage
Pusher plate
Feed system
Hollow shaft
Pusher shaft
Pusher control system

main dewatering
Discharge
Washing
Intermediate
dewatering
Final
dewatering
Additives
Wash liquid
Solids
Filtrate

is fed continuously
moves backward
The solids are retained on the

screen

rear position

loose suspension slides backward

moves forward

Loose suspension becomes compressed

moves forward

Solids become pushable and pushes
the cake to the front

forward position

feed zone is flooded up to the cake surface

moves backward

a portion of the newly created cake
slides backward

© ANDRITZ 2011

to process area
Feed pipe through top of housing
Door hinge

on SZ 630 and larger size
Tangential Inspection covers for easy basket shell inspection
User benefits:
Best access to process area
Easy maintenance without removal of connections and heavy parts

with
acceleration cone
Slurry Feed System
Features:
Gentle product acceleration
High filtration rate
Homogeneous product

distribution leads to smooth operation
User benefits:
High product quality
Reduced maintenance costs
High availability

tapered drain holes
Only one or two sections per basket
More

free filtration area (open area)
User benefits:
Low solids attrition
Easy installation
Reduced sediments between basket and screen
Easy cleaning of basket exterior
Reduced down time of machine
Accurate distance between wear ring and screen

Standard design welded screen

Milled slot screen (alternative)

slot to screen
User benefits:
Reduction of solids lost with filtrate
Reduction

of consumables to a minimum

Standard design wear ring

Wiper segments (alternative)

sealing of process area( absolute no product contamination)
Standard water

free design
Water design alternative available
Gas tight alternative available

User benefits:
Safe operation
Maintenance friendly

Sealing gas
connection (air)

control device
User benefits:
No possibility of cross -contamination product /

lubricants
Safe operation
Simple check of sealing condition

stroke
length

during maintenance
Maintenance possible in a workshop
Replacement against spare cartridge

possible
User benefits:
High availability
Reduced maintenance costs

world wide
Pusher centrifuges including pre-thickening systems
Test and rental units

available

Krauss-Maffei SZ 1250 – largest pusher in the world

299 0
kmpt@andritz.com
www.kmpt.com