High Rate Thickener for Gold Mining
Product Spotlights
1. Product Introduction
Our premier series of High-Rate Thickeners (HRT) represents the cutting edge of solid-liquid separation technology, specifically engineered for the demanding environments of modern gold mining operations. In gold circuits—whether utilizing carbon-in-leach (CIL), carbon-in-pulp (CIP), flotation, or heap leaching—efficient water management and rapid slurry handling are critical to profitability and environmental compliance.
This high-rate thickener is designed to process massive volumes of low-density gold tailings or concentrates, consolidating them into a high-density underflow while instantly recovering clear water for immediate plant reuse. By optimizing settling dynamics, our High-Rate Thickeners achieve up to several times the processing capacity of conventional thickeners of the same diameter, drastically reducing the equipment footprint, civil engineering costs, and overall Capital Expenditure (CAPEX).
2. Working Principle
The High-Rate Thickener achieves rapid sedimentation by utilizing advanced feedwell dynamics and precise polymer flocculation, running through the following automated process:
De-aeration & Feedwell Optimization: Before entering the thickener, the gold slurry passes through a de-aeration tank to eliminate entrained air bubbles that could disrupt settling. The slurry then enters a specially engineered, high-dilution feedwell where it is mixed with a precise dose of flocculant.
Rapid Flocculation: Inside the feedwell, the polymer flocculant binds fine gold tailings particles together into large, heavy agglomerates called "flocs." The feedwell design ensures uniform energy dissipation, maximizing particle-polymer collisions without shearing the fragile flocs.
Hindered Bed Settling: The flocculated slurry moves out into the main tank, where the heavy flocs settle at an accelerated velocity, forming a dense, compacted mud bed at the bottom. The displaced, clarified water rises to the top, escaping over the peripheral weir launder.
High-Torque Raking & Discharge: A heavy-duty central drive rotates a rugged rake mechanism through the compacted sludge bed. The rake blades compress the mud, squeezed out trapped water, and continuously channel the high-density underflow solids to the central discharge cone for pumping.
3. Key Features
Maximised Water Recovery & Cyanide Management: Recovers up to 85–90% of process water on the spot. In gold plants utilizing cyanidation, this rapid recycling keeps expensive chemicals and heated water within the plant circuit, lowering fresh water demands and chemical consumption costs (OPEX).
Extreme High-Torque Drive System: Features an advanced hydraulic or planetary gearbox drive with high torque capacity. The system is equipped with an automated rake-lifting mechanism that triggers during heavy mud-bed overloads or power outages, preventing structural damage and minimizing downtime.
Compact Footprint & Lower Installation Costs: Due to its high-rate design, it handles significantly higher specific settling fluxes than conventional units. This means a much smaller tank diameter is required for the same throughput, translating to lower steel weight, reduced site footprints, and minimal civil concrete costs.
Technical Specifications
Model |
Tank Diameter (mm) |
Tank Depth (mm) |
Settling Area (m²) |
Capacity (m³/h) |
DCT-3 |
3000 |
4400 |
21 |
60–70 |
DCT-6 |
6000 |
8800 |
85 |
210–260 |
DCT-9 |
9000 |
13500 |
310 |
570–700 |
DCT-12 |
12000 |
17500 |
510 |
800–1200 |
DCT-15 |
15000 |
19000 |
1200 |
1000–1500 |
DCT-18 |
18000 |
22000 |
2000 |
1400–2100 |
DCT-20 |
20000 |
22800 |
2700 |
2100–2600 |
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