Gold or Silver Elution and Electrowinning System

Working Principle 

Anions which are absorbed by activated carbon more easily are fed into solution for replacing Au (CN)2- out of surface of carbon to elute gold. Electrowinning recovers gold as sludge type from the pregnant solution produced by elution.

Features

High temperature, high pressure, cyanide-free and elution controlled automatically bring out the advantages of high efficiency, low consumption, and quick cycle.

High efficiency: the elution rate can be more than 96% while the grade of the gold loaded carbon reached 3000g/t, The grade of barren carbon can be reduced by 3-4 times than that of the conventional system.

Quick cycle: The working temperature of the system is 150℃so that elution is quick and the stripping duration is only 8-10 hours which is about one forth of that of the conventional system.

Low consumption: The elution Devices and electrowinning equipment compose a whole system. The temperature of every section of the whole system is same so that the heat exchanger is no need. The total power consumption is only 1/2-1/4 of  the value of the conventional system because heat energy is recycled fully.

Cyanide-free: No sodium cyanide is fed to prepare stripping solution to realize low costs and no pollution.

High grade of gold sludge, no reverse electrowinning, easy to collect gold sludge.

Automation: Special liquid level control unit, temperature control unit and automatic control center.

Safety: Triple safety protection devices, i.e., self intelligent system, automatic rated pressure release system and safety valves.

Long life: The material type of equipment, pipes, valves and instruments is stainless steel.

Application 

It is used to recover gold solid from gold loaded carbon coming from cyanide leaching.

Capacity 

Standard Capacity of Process

(kg/d)

Upper Limit Capacity of Process

(kg/d)

Recommended model

(kg/batch)

300

750

HZ-200

450

1000

HZ-300

650

1700

HZ-450

750

1800

HZ-500

900

2200

HZ-600

1130

2700

HZ-750

1500

3600

HZ-1000

1800

4500

HZ-1200

2250

5500

HZ-1500

2700

6500

HZ-1800

3000

7500

HZ-2000

3750

9000

HZ-2500

4500

11000

HZ-3000

5200

13000

HZ-3500

6000

15000

HZ-4000

7500

18000

HZ-5000

Technical Parameters

Model

Suitable Scale

System Equipment List

Operation Parameters

Mineral ProcessingPlant Scale

(t/d)

Raw OreGrade

(g/t)

HZ-200

<150

2-8

S1-Elution Column

S2-Filter

S3-Electrowinning Cell

S4-Circulating Pump

S5-Electric Heater

S6-Carbon Ejector

S7-Air Compressor

S8- Elution Solution Preparation Tank

S9-Clear Water Pump

S10-Acid Storage Tank

S11-Magnetic Pump

S12-Carbon Storage Tank

S15-Ccontrol Cabinet

S16- Rectifier

S17-Pickling Tank

 

 

Desorption Solution:Ph≥13.5

Times Of Cycle: No limited

Electrolysis Start: 100-110

Electrolysis Ending: 150

Electrolysis Current: 350-1250a

Electrolysis Pressure: 2-4v

 

 

HZ-300

150-300

 

 

 

 

2-8

HZ-450

HZ-500

300-500

HZ-600

HZ-750

HZ-1000

500-1000

HZ-1200

HZ-1500

HZ-1800

HZ-2000

1000-2000

 

 

 

2-20

HZ-2500

HZ-3000

HZ-3500

2000-3000

HZ-4000

HZ-5000

Special Type

>3000