Palladium Recovery

Process Design for Recovering Palladium from Coal Chemical Waste Catalysts

This paper outlines a palladium recovery process for waste catalysts in coal chemical industries. Key aspects include:

1. Process Design Overview
   The method involves roasting, leaching, clarification, resin exchange, complexation, palladium precipitation, calcination, and reduction. The text briefly explains the workflow and principles.

2. Key Equipment
   The design specifies roasting systems with tail-gas treatment, slurry filters, solution fine filters, and ion-exchange resins. Material requirements are also detailed.

3. Performance and Benefits
   The process yields 99.9% pure sponge palladium. Direct recovery exceeds 96.5%, with total recovery above 98%.

Two factories using this method achieved full production targets and strong profits. Advantages include:

• Advanced yet simple equipment

• Low energy use and emissions

• Safe working conditions

• High recovery rates for palladium and platinum

The method suits both palladium and platinum waste catalysts, supporting wider adoption.

Acid-Alkali Waste Gas Treatment System
The scrubber comes in single-tower, dual-tower, vertical, or horizontal spray designs. Key components:

• Liquid storage tank

• Tower body with inlet/outlet sections

• Spray and packing layers

• Swirl demister

• Inspection ports

Flange connections join modular sections