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Categories | Sub-categories | Assessment questions | Assessment |
Properties of the ore | Type of deposits | Is the technology suitable for hard rock deposits? | Yes |
Is the technology suitable for alluvial gold deposits? | Yes | ||
Is the technology suitable for eluvial gold deposits? | None | ||
Type of ore | Is the technology suitable for free milling ores? | Yes | |
Is the technology suitable for oxide ores? | None | ||
Is the technology suitable for sulphide ores? | None | ||
Is the technology suitable for carbonaceous ores? | None | ||
Is the technology suitable for refractory ores? | None | ||
Is the technology suitable for sand rock bearing ore? | None | ||
Is the technology suitable for ore with clay material? | None | ||
Is the technology suitable for ore bearing nuggets? | None | ||
Is the technology suitable for ore in desert areas? | None | ||
Is the technology suitable for ore in wet conditions? | None | ||
Is the technology suitable for ore in coarse gravels? | None | ||
Is the technology suitable for ore in fine gravels? | None | ||
Grade/gold content | Is the technology suitable for high grade ores? | None | |
Is the technology suitable for low grade ores? | Yes | ||
Grain size of the gold) | Is the technology suitable for fine grained gold? | Yes | |
Is the technology suitable for course grained gold? | None | ||
Is the technology suitable for mixed fine and course material? | None | ||
Is the technology suitable for very/ultra fine grained gold? | None | ||
Feed volume (batch volume) | Is the technology suitable for large quantity of feed material? | No | |
Is the technology suitable for small quantity of feed material? | Yes | ||
Operationals requirements | Cost of equipment | Are the costs of procuring the technology affordable to artisanal miners? | No |
Are the costs of procuring the technology affordable to small-scale miners? | Yes | ||
Are the costs of operating the technology affordable to artisanal miners? | None | ||
Are the costs of operating the technology affordable to small-scale miners? | None | ||
Are the costs of maintanance and replacement affordable to small-scale miners? | None | ||
Are the costs of maintanance and replacement affordable to artisanal miners? | No | ||
Utilities and inputs required | Does the technology require water? | Yes | |
Is the amount of water required suitable to processing by individual miners? | None | ||
Does the technology require electricity or power source? | Yes | ||
Is the amount of electricity required suitable to processing by individual miners? | None | ||
Does the technology requre diesel? | No | ||
Is the amount of diesel required suitable to processing by individual miners? | No | ||
Does the technology require reagents during processing? | None | ||
Is the amount of reagents suitable for processing by individual miners? | None | ||
Does the technology require any other infrastructure? | Yes | ||
Type of organisation | Does the technology allow operation by individual miners? | Yes | |
Does the technology allow operation by group of miners? | Yes | ||
Does the technology allow operation by organisations? | No | ||
Does the technology allow operation by processing plants? | No | ||
Does the technology work only with a continous system? | No | ||
Does the technology work with batch and continous systems? | Yes | ||
Does the technology work only with a batch system? | No | ||
Processing flowsheet and performance of the techology | Processing flow | Does the technology work as a standalone? | Yes |
Does the technology work as part of a process system? | Yes | ||
Gold recovery | Does the technology offer high recovery rates compared to the amalgamation process? | Yes | |
What are the typical gold recoveries for this technology? | 99% | ||
Does the technology produce gold directly? | Yes | ||
Does the technology produce gold directly but in a different form to be converted to gold? | No | ||
Does the technology require other processes to recover the gold? | No | ||
Are there potential gold losses during processing with this technology? | Yes | ||
Processing time | Does the technology offer less processing time compared to the amalgation process? | None | |
Tailings | Can the technology re-process tailings? | Yes | |
Recovery of other minerals | Can the technology recover other minerals in addition to gold? | Yes | |
Visual tracking and monitoring | Does the technology allow visual tracking and/or monitoring? | Yes | |
Local considerations | Availability of the equipment | Does the technology make use of equipment that is locally available? | No |
Availability of the inputs | Does the technology require inputs that can be locally sourced? | None | |
Scalability of the technology | Can the technology be scaled up or down to suit the spectrum of ASGM activities? | Yes | |
Adaptability of the technology | Can the technology be used in remote areas? | No | |
Ease of use/learning (skills requirement) | Is the technology easy to use or learn? | No | |
Does the technology require knowledge /skills on metallurgy to use? | No | ||
Capacity to maintain | Is the technology easy to maintain? | No | |
Health, safety and environment Risks | Health and safety hazards | Does the recovery of gold using this technology pose any health and safety hazards? | No |
Environmental risks | Does the recovery of gold using this technology pose any environmental risks? | No |
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