Desorption Electrolysis System
|Introduction:||Desorption electrolysis system as gold extraction equipment obtains gold mud from carbon by desorption and electrowinning|
|Improvement:||Desorption electrolysis system consists of electrolysis equipment including desorption column and the electrodeposition tank|
In the high temperature (150℃) and pressure (0.5MPa), the desorption rate reaches 98%.
Since desorption and electrolysis does not require different temperatures, it is not necessary to change temperature. The quickness and efficiency of machine dramatically diminishes gross electricity consumption by 1/2-1/4.
Desorption does not require sodium cyanide, which reduces cost and averts pollution.
In gold electrowinning process,when the electrolysis equipment is added with anions which are more easily absorbed by activated carbons, Au（CN）2ˉ is replaced by anion and the gold desorption is achieved. After the carbons loaded with gold are desorbed, pregnant solution is process via ionization. At last, solid gold is attained.
|Model||Suitable Scale||System Equipment List||System Instrument List||Operation Parameters|
|Mine Scale (t/d)||Raw Ore Grade (g/t)|
$1 Desorption Column
$3 Electrolytic Tank
$4 Circulating Pump
$5 Electric Heater
$6 Carbon Ejector
$7 Air Compressor
$8 Desorption Solution Tank
$9 Clarified Water Pump
$10 Acid Storage Tank $11 Magnetic Pump
$12 Carbon Storage Tank
$15 Control Cabinet
$16 Silicon Rectifier Cabinet
$17 Pickling Tank
B1 Electric Resistance Remote Transmission Diaphragm-Seal Pressure Gauge
B1 Pressure Indication Adjusting Meter
B2 Diaphragm Pressure Gauge
B3 Vortex Shedding Flowmeter
B3 Flow Integrating Instrument
B4 Thermal Temperature Meter
B5 Temperature Sensor
B5 Temperature IndicationAdjusting Meter
P6 Diaphragm Pressure Gauge
B7 Level Meter
B9 Temperature Sensor
B9 Temperature Indication Adjusting Meter
PH > 13.5
700 TPD rock gold mine project in Zimbabwe was contracted by Xinhai, the gold mine is mainly quartzite, mostly are oxidized ore and raw ore with low sulfur. The dressing part adopts gravity separation + all-sliming cyanided carbon slurry process, namely desorption electrolysis system for gold extraction. It is featured with efficient and rapid extracting, low consumption, and low cost and high production efficiency. The gold grade is high without reverse electrolysis, realizing the efficient recovery of gold.