Scraper Bottom Discharge Centrifuge for Carbonate Precipitation Separation

The Scraper Bottom Discharge Centrifuge is specifically designed for the solid-liquid separation of carbonate precipitates generated during chemical reaction, crystallization, and purification processes. It is widely used in lithium carbonate production, calcium carbonate manufacturing, sodium carbonate recovery, magnesium carbonate processing, and various inorganic salt precipitation systems.

The centrifuge automatically completes feeding, filtration, cake washing, dewatering, scraping, and discharge within a controlled operating cycle. It is particularly suitable for carbonate slurries with high solids concentration, large crystal volume, and strict product purity requirements.

Compared with conventional filtration systems, the scraper discharge design provides higher production efficiency, lower labor requirements, improved crystal recovery, and more consistent product quality.

Carbonate precipitation processes generate large quantities of fine or medium-sized crystals that must be separated efficiently from reaction liquor.

Common challenges include:

• Incomplete crystal recovery
• High mother liquor carryover
• Product purity fluctuations
• Fine particle loss
• Large slurry flow variations
• Continuous production requirements
• Scaling and crystal buildup inside equipment

The Scraper Bottom Discharge Centrifuge provides efficient solid-liquid separation and reliable crystal recovery while maintaining stable product quality and production throughput.

Peony provides not only centrifuge equipment but also complete carbonate separation support.

Process Evaluation

Our engineers evaluate:

• Carbonate crystal characteristics
• Particle size distribution
• Crystal morphology
• Slurry concentration
• Mother liquor properties
• Target moisture requirement
• Washing and purity requirements

Equipment Selection

We help customers select:

• Basket diameter and capacity
• Filter media configuration
• Construction material
• Washing system
• PLC automation level
• Explosion-proof configuration

The carbonate slurry enters the rotating basket lined with filter media.

Under centrifugal force:

1. Mother liquor passes through the filter medium.
2. Carbonate crystals are retained inside the basket.
3. Optional wash liquid is sprayed onto the crystal cake.
4. High-speed rotation removes residual moisture.
5. The scraper automatically removes the cake.
6. The separated crystals are discharged through the bottom outlet.

The entire process is automatically controlled through PLC operation, ensuring stable and repeatable separation performance.

High Crystal Recovery

The centrifuge efficiently captures precipitated carbonate crystals and minimizes product loss in the mother liquor.

Low Mother Liquor Carryover

Effective filtration reduces liquid retention inside the cake, helping improve downstream drying efficiency and product purity.

Suitable for High Throughput Production

Large basket volume and automatic discharge allow continuous handling of high precipitation rates from industrial reactors.

Integrated Crystal Washing

Optional cake washing removes soluble impurities and improves final carbonate purity.

Stable Continuous Operation

Designed for long production campaigns with minimal operator intervention.

Automatic Product Discharge

The scraper mechanism automatically removes crystal cake and prepares the basket for the next cycle.

Flexible Material Selection

Available in SS304, SS316L, Duplex Stainless Steel, Titanium, and other corrosion-resistant materials depending on process chemistry.