High Compression Thickener
A High Compression Thickener is designed for solid-liquid separation where a higher underflow concentration is required.
By providing an extended compression zone for settled solids, the equipment allows particles to consolidate more effectively before underflow discharge. It is suitable for mineral processing and hydrometallurgical applications where water recovery and slurry concentration are important.
The video below shows a PRS thickener during installation and operation, giving a closer look at the equipment structure and on-site configuration.
Thickening Process
The thickening process follows a controlled sequence from slurry feeding to concentrated underflow discharge:
Slurry Feed → Dilution & Flocculation → Central Distribution → Sedimentation → Rake Collection → Underflow
The feeding and distribution stages are particularly important for maintaining even settling conditions. Proper dilution and flocculation help particles form larger flocs, while the settling zone allows solids to consolidate before being collected by the rake and discharged as underflow.
Designed for High-Density Underflow
The main purpose of a High Compression Thickener is not simply to increase settling capacity, but to improve the compression and consolidation of settled solids.
A properly designed system can help achieve:
- Higher underflow solids concentration
- Better process-water recovery
- Reduced water volume in downstream slurry
- More stable solid-liquid separation
- Lower load on subsequent dewatering equipment
The achievable underflow concentration depends on the characteristics of the feed material, particle size, solids concentration and flocculant conditions.
Flexible Steel Tank Design
For large equipment, PRS can use a flexible steel tank bottom with radial supporting beams.
The modular structure is designed for fabrication and pre-assembly before delivery. This reduces the amount of adjustment required during site installation and helps improve installation efficiency.
The tank can be configured according to the required diameter, process conditions and site layout.
Key Components
A typical High Compression Thickener includes:
- Steel tank
- Bridge
- Drive and lifting mechanism
- Central shaft
- Rake mechanism
- Feed and distribution system
- Overflow launder
- Electrical and hydraulic system
The equipment configuration can be adapted to the customer’s process and installation requirements.
Typical Applications
High Compression Thickener can be used where a relatively high-density underflow is required, including:
- Mineral processing plants
- Hydrometallurgical plants
- Tailings treatment
- Process-water recovery
- Slurry concentration
For projects with strict requirements on underflow concentration, PRS can adjust the thickener configuration according to feed properties and process targets.
PRS Thickener Solutions
Thickener performance depends on more than tank diameter. Feed concentration, particle characteristics, settling behavior and underflow requirements all affect the equipment design.
PRS can provide customized thickener equipment based on the customer’s process data, plant layout and required capacity.
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