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 Filters
Filter Press Range

Durco Filters
TE Tubular Filters

Durco TE Series Tubular Filter Continuous Filtration System

Durco Filters
Tubular Filter Range

Filter Press & Tubular Filter Systems For Carbon Fines Removal

Durco Filters Mining Filtration Equipment - Advanced Filter Press & Tubular Filter Technology For Removal Of Carbon Fines From;
Carbon In Pulp, Carbon In Leach, Or Carbon In Column
Carbon Adsorption Processes For Gold Concentration

Gold Extraction

Production of metallic gold from comminuted ore may most simply be achieved in 2 basic steps by Heap Leaching followed by Merrill-Crowe Recovery.

However, following the Heap Leaching Step, and before the Recovery Step, some operations insert an intermediate Carbon Adsorption Step - in order to isolate the Gold content from the leach solution and concentrate it onto active carbon surfaces.

2. Heap Leaching Plus Carbon Adsorption followed by Recovery

In this intermediate step, activated carbon particles are mixed into the leach slurry. The dissolved Cyanidic Gold Complex is then preferentially adsorbed onto the activated carbon surface. To achieve this, there are currently 3 process variations in common use:

• Carbon In Pulp (CIP) Adsorption
• Carbon In Leach (CIL) Adsorption
• Carbon In Column (CIC) Adsorption

More Information & Carbon Adsorption Flow Diagrams >>>

Filter Press Application For Fines Removal In Carbon Adsorption Processes

For CIP, CIL, or CIC Carbon Adsorption Processes - Durco Filters Filter Press Technology is a critical system component, required to capture carbon fines that would otherwide cause premature plugging of internal screens and filters.

Durco Filters EP 1000 Sidebar Filter Press Model

Tubular Filters For Removal Of Carbon Fines From Recycled Cyanide Solution

Following separation of the gold-cyanide loaded carbon particles, the recovered leach solution is usually recycled for re-use at the ore heap. However, before it is suitable for re-use, any entrained carbon fines must be removed to prevent plugging of the heap.

Durco TE Tubular Filter Systems are ideally suited for this application:

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

The adsorbed gold is then stripped from the carbon particle surface area by elution with hot caustic/cyanide solution which is then pumped to the Recovery Step. Recovery of metallic gold may be achieved by either Merrill-Crowe or alternate Electrowinning technique.

<<< Introduction - Filters For Merrill-Crowe Gold Extraction & Recovery
<<< Leach Clarification Filters
Merrill-Crowe Recovery Filters >>>
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