High Temperature & Pressure Gold Desorption Electrolysis System

【Structure of High Temperature and High Pressure Desorption Electrolysis System】 
The high-temperature and high-pressure gold desorption electrolysis system mainly consists of five core modules: a desorption column, an electrolytic cell (including electrodes and a rectifier power supply), a heating and pressurizing unit, a circulation pipeline, and an intelligent control and safety system.
1. Core Processing Modules

• Desorption/Stripping Column: Primary unit for separating gold from activated carbon under high pressure, also called an analytical column
• Electrowinning Assembly: Integrated electrolytic tanks with steel wool cathodes for gold deposition

2. Thermal Management System

• Heating subsystem: Electric heating elements; Multi-stage heat exchangers
• Temperature-regulated pipeline network with high-pressure valves

3. Flow Control System

• High-pressure circulation pumps (specifically designed for pregnant solution transfer)
• Automated flow control valves between desorption and electrowinning stages

4. Supporting Infrastructure

• Purification subsystem: Multi-stage filtration units for carbon fines removal; Secondary polishing filters
• Storage solutions: Acid pickling tanks; Activated carbon storage vessels

5. Control & Power Systems

• Intelligent process control center with: Pressure regulation modules; Temperature feedback loops; Flow monitoring systems
• Power supply: Silicon rectifier cabinets; Dedicated DC power units;

6. Ancillary Systems

• Pneumatic components: Industrial air compressors (for system purges); Carbon transfer ejectors
• Specialized pumping: Magnetic drive pumps for acid circulation; High-temperature slurry pumps

【Working Principle of the High-Temperature and High-Pressure Desorption Electrolysis System】
The workflow is clearly divided into two core stages—desorption and electrolysis.
1. Desorption process: Pre-treated gold-loaded carbon is loaded into a desorption column (or tower), and a specific solvent (such as an eco-friendly, cyanide-free desorption solution) is introduced. Upon heating, the solvent vaporizes; under the combined action of high temperature and high pressure, the adsorption bonds between the gold-cyanide complexes and the activated carbon are effectively broken—or an anion exchange reaction occurs—causing the gold to enter the solution in ionic form and creating a gold-rich "pregnant solution."
2. Electrolysis process: The pregnant solution resulting from desorption is transported to a separate electrolytic cell (electrowinning cell). Under the influence of a direct current (DC) electric field, gold ions in the solution migrate toward the cathode, where they are reduced to elemental gold and deposited as gold sludge, thereby recovering the gold. The entire process is managed via an intelligent control system that provides precise closed-loop control over parameters such as temperature, pressure, flow rate, and electric current.