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Desorption electrolysis system

[Introduction] A complete set of system is applied to the treatment of gold-bearing charcoal in the coal pulp plant of gold mines, so that gold can be separated from the gold-bearing charcoal and precipitated into high-grade gold sludge.

[Gold Carbon Content] Over 3.5kg/t

[Application] It is used to extract solid gold from gold-bearing carbon by cyanidation.

[Improvement] The desorption electrolysis system consists of desorption column, electrolyzer, electric heater, desorption liquid tank, filter, electronic control cabinet, rectifier cabinet, circulating pump, activated carbon regeneration kiln, etc.

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Advantages

  1. The desorption electrolysis cycle is short.
  2. The desorption rate is high. The desorption rate can reach more than 98% under the conditions of temperature 150℃and pressure 0.5 MPa.
  3. There is no need for sodium cyanide in desorption solution, no toxic and flammable components, and the cost of analysis is low.
  4. The whole working process is in a closed pressure system, safe and reliable operation, no stimulating gas escaping from the workshop, good working conditions, low labor intensity.
  5. The operating conditions of the system are strictly controlled, the technical indexes of production are stable, the quality of gold mud is high, and it is easy to extract without requiring back electrolysis.
  6. After desorption and electrolysis, the gold content in lean liquor is generally lower than 2.5g/m3, the gold content in desorbed carbon is generally lower than 100g/t, and the quality of gold slime is high.
  7. It is economically reasonable, technologically advanced and has broad prospects for development. It has been widely used in gold metallurgical industry.

 

Structure

The desorption electrolysis system adds anions easily adsorbed by activated carbon to the desorption system, thus replacing Au(CN)2-to realize gold desorption. The precious liquid obtained by desorption of gold-loaded carbon is recovered by ionization method to obtain solid gold.

The desorption electrolysis device is mainly composed of desorption and electrolysis. The process of desorption and electrolysis is separated so that the solvent is carried out in a comprehensive desorption tower. The noble liquid electrolysis is completed in an independent electrolytic cell. The four processes of solvent desorption, noble liquid heating, solvent condensation and solvent recovery are centralized in a comprehensive desorption tower, and the noble liquid obtained by solvent vapor desorption of gold-loaded carbon is concentrated. The crude gold is obtained by electrolysis in a separate electrolytic cell through a pipeline, and then the finished gold is purified.

 

Technical Parameter

Desorption electrolysis system

Model

Capacity (t/d)

Ore Grade

(g/t)

Parameter

GJD-200

＜150

2–8

Working Temperature：150℃
Analytical solution (Na0H)PH：≥13.5
Dosorption Tank Pressure：0.5(Mpa)
Electrolytic cell pressure：0.45(Mpa)

GJD-300

150-300

2–8

GJD-500

300-500

2–8

GJD-700

GJD-1000

500-1000

2–8

GJD-1500

GJD-2000

1000-2000

2–20

GJD-2500

GJD-3000

GJD-3500

2000-3000

2–20

GJD-4000

GJD-5000

GJD-8000

3000-5000

2–20

Electric Heating Technology

Model

Working Temperature 

℃

Working Medium

Heat Power

kw

Voltage

V

Weight

kg

Remarks

JDDR6

40

NH4SCN

2×3

380

80

Resin desorption

JDDR18

98

1%NaOH+2%NaOH

6×3

380

 

JDDR24

98

1%NaOH+2%NaOH

8×3

380

147

JDDR36

98

1%NaOH+2%NaOH

6×6

380

 

JDDR48

98

1%NaOH+2%NaOH

8×6

380

138

Electric Heating Technology

Model

Working Temperature 

℃

Working Medium

Heat Power

kw

Voltage

V

Weight

kg

Remarks

JDDR6

40

NH4SCN

2×3

380

80

Resin desorption

JDDR18

98

1%NaOH+2%NaOH

6×3

380

 

JDDR24

98

1%NaOH+2%NaOH

8×3

380

147

JDDR36

98

1%NaOH+2%NaOH

6×6

380

 

JDDR48

98

1%NaOH+2%NaOH

8×6

380

138

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