Stable Discharge Pusher Centrifuge for Ammonium Sulfate dewatering
Description
Stable-Discharge Pusher Centrifuge for Ammonium Sulfate Crystal
Dewatering is designed for continuous dewatering and mother liquor
separation of ammonium sulfate crystals in fertilizer and chemical
production lines.
Ammonium sulfate crystals usually come from crystallization,
evaporation concentration, reaction processes, or by-product
recovery systems. After crystallization, the crystal slurry
contains ammonium sulfate solids, mother liquor, dissolved
impurities, and residual process liquid.
A pusher centrifuge removes free liquid through centrifugal
filtration and continuously discharges the crystal cake before
drying, cooling, screening, or packaging.
Typical Applications
- Ammonium sulfate crystal dewatering
- Fertilizer crystal solid-liquid separation
- Mother liquor separation after crystallization
- Ammonium sulfate wet cake discharge before drying
- Ammonium sulfate cake washing and dewatering
- By-product ammonium sulfate recovery
- Evaporation crystallization product dewatering
- Reaction crystallization product separation
- Continuous fertilizer production line integration
- Pre-drying dewatering before fluidized bed dryer or rotary dryer
What It Separates in Ammonium Sulfate Crystal
| Output Phase | Typical Composition | Main Purpose |
|---|
| Ammonium Sulfate Crystal Cake | Ammonium sulfate crystals and granular solid product | Recover product crystals and reduce free liquid before drying |
| Mother Liquor | Process liquid containing dissolved ammonium sulfate and soluble
impurities | Separate liquid from crystals for return, reuse, recovery, or
treatment |
| Wash Liquor | Washing liquid after cake washing, if used | Reduce residual mother liquor and improve product quality |
The actual separation result depends on crystal size, particle
shape, slurry concentration, mother liquor viscosity, screen
opening, washing requirement, and operating parameters.
Why Ammonium Sulfate Crystals Need a Pusher Centrifuge
Ammonium sulfate crystals are usually suitable for filtration, but
stable operation depends heavily on crystal size, feed
concentration, and cake behavior. If the discharge is unstable, the
production line may face:
- Uneven wet cake discharge
- Higher cake moisture before drying
- Higher dryer energy consumption
- Mother liquor carryover in the product
- Product caking after drying or storage
- Screen blockage caused by fine crystals
- Fluctuating feed to dryer or cooler
- Higher product loss in filtrate
- More frequent shutdown and cleaning
A stable-discharge pusher centrifuge helps maintain continuous cake
movement, steady solids discharge, and predictable feed to
downstream drying equipment.
How the Pusher Centrifuge Works in Ammonium Sulfate Crystal
Ammonium sulfate crystal slurry enters the centrifuge through the
feed pipe and is evenly distributed onto the rotating screen
basket.
Under centrifugal force, mother liquor passes through the screen
openings and is collected as filtrate. Ammonium sulfate crystals
are retained on the screen surface and form a filter cake.
The pusher mechanism moves the crystal cake forward step by step.
During this movement, the cake continues to lose liquid. If product
washing is required, wash liquid can be sprayed onto the cake to
reduce residual mother liquor or soluble impurities.
Finally, the dewatered ammonium sulfate crystal cake is discharged
continuously from the basket end and sent to the dryer, cooler,
screening machine, packaging section, or next process stage.
Technical Parameter
| Model | PP-25 | PP-40 | PP-50 | PP-60 | PP-85 |
|---|
| Diameter (mm) | 200/251 | 290/360 | 438/500 | 560/630 | 738/820 |
| Rotate speed (Max)(rpm) | 3000 | 2500 | 2000 | 1360 | 1040 |
| Stroke of Pusher Mechanism (times/min) | 33-52 | 40-80 | 40-80 | 70-80 | 70-80 |
| Main motor power (kw) | 7.5 | 11-15 | 352-1140 | 286-1145 | 236-875 |
| Main motor Protection class | IP54/F1 | IP54/F1 | IP54/F1 | IP54/F1 | IP54/F1 |
| Main motor Power supply | 3 phase AC | Customized 3 phase AC | Customized 3 phase AC | Customized 3 phase AC | Customized 3 phase 380V/50HZ |
| Oil pump motor spec/Power(Kw) | 4 | NB4C100F | SNE/A280 | NB5D140F | NBX6-F160F |
| Oil pump outflow(ml/turn) | 100 | 100 | 480 | 140 | 180 |
| Oil pump max pressure(Mpa) | 2.5 | 2.5 | 2 | 8 | 8 |
| Export Dimension(mm) | 2155x1320x990 | 2346x1090x1006 | 3660x1420x2078 | 3127x1700x1955 | 3990x2000×1939 |
| 820x500x1650 |
| Weight(kg) | 1275 | 2600 | 4400 | 4860 | 6250 |
Main Advantages in Ammonium Sulfate Crystal Dewatering
Stable Crystal Cake Discharge
The pusher mechanism moves the ammonium sulfate cake forward step
by step, helping maintain continuous and stable solids discharge.
Lower Wet Cake Moisture
Centrifugal filtration removes free mother liquor from the crystal
cake, reducing the load on downstream dryers.
Suitable for Fertilizer Production Lines
The machine can be integrated with crystallizers, dryers, coolers,
screens, and packaging systems for continuous ammonium sulfate
production.
Product Washing Available
Cake washing nozzles can be added to reduce residual mother liquor
and improve crystal product quality when required.
Reduced Product Loss
Customized screen openings help retain ammonium sulfate crystals
while allowing mother liquor to pass through.
Better Dryer Feeding Stability
Stable wet cake discharge helps maintain more consistent feeding to
fluidized bed dryers, rotary dryers, or cooling sections.
Custom Screen Segment Support
Screen material, slot size, thickness, and surface finishing can be
selected according to crystal size, corrosion condition, and
operating requirements.
Expected Results
Under suitable feed and operating conditions, the system can
typically help achieve:
- 3–10% wet cake moisture for many well-formed ammonium sulfate
crystals
- 50–85% reduction in free liquid carryover before drying compared
with untreated wet slurry.
- 95–99.5% ammonium sulfate crystal recovery
- 30–70% reduction of residual mother liquor in the cake when an
effective cake washing system is used.
- 15–40% reduction in downstream dryer load
- More stable wet cake feeding to dryer, cooler, screening machine,
or packaging section.
- 8–24 hours/day continuous operation
Final performance depends on crystal size distribution, particle
shape, slurry concentration, mother liquor viscosity, screen
opening, centrifugal force, washing condition, and operating
parameters.
What Data Is Needed for Selection?
To recommend a suitable pusher centrifuge for ammonium sulfate
crystal dewatering, please provide:
- Processing capacity
- Feed slurry concentration
- Solids content
- Crystal size distribution
- Crystal shape
- Mother liquor composition
- Mother liquor viscosity
- Feed temperature
- Target wet cake moisture
- Product washing requirement
- Required product purity
- Filtrate reuse or treatment requirement
- Existing upstream crystallizer or reactor
- Downstream dryer, cooler, screening machine, or packaging system
- Required operating hours per day
- Site voltage and control preference
- Preferred material of construction
- Required screen slot size, if known
FAQ
What is this pusher centrifuge used for?
It is used for continuous dewatering, mother liquor separation, and
optional washing of ammonium sulfate crystals.
Why is stable discharge important?
Stable discharge helps maintain continuous dryer feeding, reduce
moisture fluctuation, and avoid uneven cake build-up inside the
centrifuge.
Can it reduce dryer load?
Yes. By removing free mother liquor before drying, the pusher
centrifuge can help reduce downstream drying load.
Can the ammonium sulfate cake be washed inside the centrifuge?
Yes. Cake washing nozzles can be added to reduce residual mother
liquor or soluble impurities.
Reduced Product Loss
Customized screen openings help retain ammonium sulfate crystals
while allowing mother liquor to pass through.
Is it suitable for very fine ammonium sulfate crystals?
Not always. Very fine crystals may pass through the screen or cause
screen blockage. Material testing or screen optimization is
recommended.
Contact Peony for Partnership
If you have customer resources or project opportunities in ammonium
sulfate production, fertilizer crystal dewatering, chemical
crystallization, or solid-liquid separation systems, Peony welcomes
cooperation.
We support distributors, agents, and project partners with model
selection, process advice, customized configuration, equipment
manufacturing, installation guidance, spare parts, screen segment
customization, and after-sales service.
Send us your material name, capacity, crystal size, solids content,
mother liquor composition, and target cake moisture. Our team will
help evaluate the suitable ammonium sulfate crystal dewatering
solution.
