Mining Filtration Equipment

Durco Filter Press
Precipitate Recovery
Dewatering Systems

Durco Filters EP Sidebar Filter Press Models

Durco Filters QP Overhead Filter Press Models

Durco Filter Press Range

Leach Clarification
Pressure Leaf Filters

Durco Filters Horizontal Pressure Leaf Filter Unit

Durco Pressure Leaf
Filter Range

Durco Filters - Merrill-Crowe Gold Recovery Filters

Durco Filters Mining Filtration Equipment - Optimized Recovery Filter Press Technology Evolved For Maximum Recovery Of Gold & Other Metallic Solids.

Durco Filters - Recovery Filter Press Technology
For Merrill-Crowe & Other Gold Recovery Processes

Durco Filters Recovery Filter Press Units have been developed following decades of experience with the mining industry. In gold mining, these units have been specifically optimized to maximize recovery of precipitated gold colloids from the Merrill-Crowe process, and they are ideal for use in other Gold Recovery processes.

After Heap Leaching of gold ore, the cyanidic leach solution is first Clarified using Leach Clarification Pressure Leaf Filters. It is then sent to the Recovery Stage of the extraction process, where metallic gold and other metals will be preciptated from solution and collected using Recovery Filtration.

Precipitation Of Metallic Gold

First, the leach solution is de-oxygenated, and then it is reacted with fine metallic Zinc (Zn) powder and other activation agents. Zinc has a high affinity for cyanide, and the resulting chemical reaction causes the Gold (as well as any Silver or Copper that are present) to precipitate from solution as very fine (colloidal) metallic particulates.

The gold-rich metallic particulates are then most effectively extracted from the resulting slurry by using Precipitate Recovery Filter Press technology.

Durco Filters EP 1200 & EP 1500 Sidebar Recovery Filter Press Models offer oversized stainless steel inlets, complete automation, and optional sludge/cake handling systems:

Durco Filters Model QP Overhead Recovery Filter Press

Durco Filters Premier Filter Press Unit - designed & engineered for Your most demanding applications where conditions include high pressure, high temperature, or corrosive process streams:

Durco Filters Mining Filtration Equipment Has Evolved Through Decades Of Design & Engineering Experience In The Mining Sector To Provide Clearly Superior Performance In Your Gold Extraction & Recovery Operation

Gold Bars

The resulting gold-rich filter cake is then sent for drying, and smelting into Dore Bars - composed of ~90% Gold.

Typically, Refining of the dore to produce 99.99% Pure Gold Bars is performed in an external operation.

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Filtration Equipment For Gold Extraction & Recovery Operations (PDF) >>>

Durco Filters Mining Filtration Equipment
Specifically Evolved For Performance, Efficiency, Durability In Mining Operations

Durco Filters Mining Filtration Equipment Sales 716-693-9381 ext.217
For Laboratory & Pilot-Scale Testing Call ext.217
For Durco Filters OEM Mining Filtration Media & Filter Parts Call ext.207