Solid Liquid Separation Sludge Thickener wastewater treatment Automatic Control
Brand Name:
Lanjiang
Place of Origin:
China
Certification:
ISO9001/CE
MOQ:
1
Product Details
Highlight:
Automatic Sludge Thickener wastewater treatment
,Solid Liquid Separation Sludge Thickener
,Automatic Control Sludge Thickener
Productname:
Sludge Removal Equipment
Application:
Wastewater Treatment Plants
Use:
Solid Liquid Separation
Product Description
Detailed Specifications & Features
Thickener Overview
A thickener is a solid-liquid separation device based on gravity sedimentation. Typically constructed as a cylindrical shallow tank with a conical bottom, thickeners use materials such as concrete, wood, or welded metal plates for structural integrity.
This equipment processes ore pulp with 10%~20% solid content, transforming it into underflow ore pulp with 45%~55% solid content through gravity sedimentation. A slowly rotating rake mechanism (1/3~1/5 r/min) facilitates the discharge of thickened underflow from the bottom outlet.
Thickeners are extensively utilized in cyanidation plants for leaching and washing operations, serving multiple functions including thickening, washing, and buffering.
Driving Mechanism Classification
Thickeners are categorized by driving mechanism into center-driven and peripheral-driven types. Center-driven thickeners are specified by tank inner diameter, while peripheral-driven units are measured by annular track diameter.
Structural Components
The center-driven thickener comprises three primary components: annular tank, rake mechanism, and driving system. The tank features a gently inclined conical bottom with a 6°~12° slope, typically constructed from concrete or steel plates for smaller diameters.
A circular overflow launder positioned along the upper inner wall manages overflow discharge. The central vertical shaft connects to the rake mechanism, which consists of cross-arranged rake arms, rake teeth, and reinforcement bracing. Rake teeth are installed at approximately 30° angles to ensure comprehensive product discharge.
Industrial Applications
Thickeners serve critical roles in facilities requiring solid-liquid enrichment and separation, including hydrometallurgy plants, mineral processing operations, and chemical processing facilities. Standard diameters range from 3m to 100m, with depths varying from 2m to 4m.
Technological Evolution
Thickener development has progressed through four distinct stages:
- Pre-Flocculant Era: Large footprint requirements with low sedimentation efficiency
- Early Flocculant Integration: Reduced footprint with accelerated sedimentation rates
- High-Efficiency Thickeners: Fundamental sedimentation principle changes yielding significantly smaller footprints
- Paste Deep-Cone Thickeners: Dramatically reduced footprint with substantially increased underflow concentration achieving paste consistency
Equipment Classification
Thickeners are primarily categorized by driving mechanism:
- Center-Driven Type: Typically features diameters under 24 meters
- Peripheral Roller-Driven Type: Common for medium to large-scale applications with diameters around 53 meters (up to 100 meters)
- Peripheral Rack-Driven Type: Generally exceeds 53 meters diameter, currently limited in application
Performance Characteristics
- Flocculant integration increases settling solid particle size for accelerated sedimentation
- Inclined plate installation reduces ore particle settling distance while increasing effective settling area
- Thick deposited sludge layers provide flocculation, filtration, compression, and capacity enhancement
- Comprehensive automation control systems for optimized operation
The operational principle centers on flocculant addition to incoming ore pulp, promoting floc formation among ore particles to dramatically increase settling velocity and enhance overall thickening efficiency.
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