This unique process adds oxygen to the ore slurry in the pre-conditioning stage, increasing dissolved oxygen concentration. This causes the rate of gold leach to increase, leading to improved gold recovery, reduced cyanide consumption and importantly, improved profitability for your business.
The GOLDOX® Process
The gold dissolution process occurs in the presence of cyanide and oxygen. Often, the demand for oxygen in this reaction is not satisfied as there are a number of side reactions which compete for the available oxygen. In addition, the forward reaction is favoured by excess oxygen & cyanide. The BOC solution to oxygen starvation in gold leaching is GOLDOX®.
Features of GOLDOX® Process:
- Custom designed solution for each application
- An injection system to help raise dissolved oxygen levels
- A number of injections systems based on our patented dissolution processes are utilised to efficiently dissolve oxygen.
The EDR® Dissolution System
Designed to build on the GOLDOX® process, the unique EDR® dissolution system utilises various configurations to disperse pressurised oxygen into the slurry stream. This allows gold mines to achieve increased dissolved oxygen levels within the leach circuit.
Benefits of EDR® devices:
- Optimised oxygen consumption
- Increase control of cyanide consumption
- Increased gold recovery
- Reduced chemical risks
- Reduced “in tank furniture”
- Low maintenance hardwearing dissolver
- No moving parts and increased wear resistance compared to other technologies
GOLDOX® 2.0 Panels
The updated GOLDOX® panels are BOC’s new design of oxygen flow measurement and control panels. These panels have been optimised to be used with BOC’s suite of GOLDOX® oxygen dissolution devices. Building on the highly successful GOLDOX® panels, additional features have been added to provide more value for our customers.
New features include:
- Standardised flow range designed to be used with BOC dissolution devices
- Automatic water flush incorporated into design to prevent dissolver blockages
- Feedback of oxygen flow rates back to customer’s control system
- Automatic and manual oxygen control modes for optimised oxygen addition
- Redundancy built in, in case of component failure.
GOLDOX® Lances
As part of the GOLDOX® range of application technology, the GOLDOX® lances are designed to inject oxygen into a pre-conditioning CIL or CIP tank.
The design of the lance has a number of key benefits over other offerings in the market. This includes:
- The ability to remove a lance while the tank is online
- The ability to water-flush the lance and nozzle arrangement to maintain peak operability
- The ability to water-flush the sheath surrounding the lance to ensure the lance can be removed easily
- Hardwearing high-grade alumina ceramic nozzles available in a range of styles
- Optimised design to deliver oxygen to the right place in the tank
- Seamlessly integrated with a GOLDOX® oxygen dosing panel
The simplicity of the GOLDOX® nozzles ensures that oxygen will be delivered to the right place, in the most cost effective and efficient manner.
BOC’s Technical Specialists are available to consult on the following:
- Complete evaluation of the leach process
- Measurement of dissolved oxygen profiles
- On-site demonstration of the GOLDOX® technology
- Detailed report on plant response to GOLDOX®
- Ongoing technical support
- Alerting customers to future advances in technology
The GOLDOX ® Potential Benefits:
- Improved kinetics resulting in increased production potential
- Better reagent utilisation resulting in lower cyanide consumption
- Improved adsorption characteristics
- Enhanced gold recovery
- Better control of dissolved oxygen levels thereby enhancing process control
- Increased returns for minimal capital outlay
- Ease of incorporation into existing facilities
BOC is committed to providing the highest possible level of service to its customers through:
- Security of supply, synonymous with being one of South Pacific’s leading gas suppliers
- Highly trained specialists dedicated to satisfying customer needs
- The provision of ongoing training and maintenance support
- Unprecedented access to the latest technological expertise from our Engineering Team
- Adherence to the highest safety standards