200 TPD Gold Extraction Solution Regeneration Plant in Yemen

Spent solution collection and preliminary filtration to remove solid residues

Heavy metal precipitation with zinc sulfate, followed by thickener and filter press for solid-liquid separation

Activated carbon adsorption column for residual gold recovery from regenerated solution

Sludge dewatering using membrane filter press for dry, stackable cake

Integrated PLC control system for process monitoring, safety interlocks, and data logging

pH adjustment system using sulfuric acid and caustic soda for optimal reaction conditions

Cyanide regeneration via AVR (Acidification-Volatilization-Reneutralization) process:

• Acidification tank for HCN gas release
• Volatilization tower for gas stripping and recovery
• Reneutralization with NaOH to regenerate NaCN solution

Regenerated cyanide solution storage tank with concentration monitoring and automated dosing system

Ventilation and HCN gas scrubbing system for workplace safety