Primary classification inefficiencies should be a problem of the past!
Ultra-fine screening technology has developed in recent years and can be successfully installed as a reliable primary classification processing unit.
Although a larger footprint will be required, the comminution and recovery benefits to date have shown project CAPEX payback periods from as little as a couple of months.
In addition, the additional mill capacity created as a result of improved classification efficiency can be utilised by either a finer mill product grind or additional ROM throughput.
AZMET has developed an IP test procedure in which the comparative hydrocyclone vs ultrafine screening testwork can be conducted. The testwork results together with the client’s plant operating data is used to conduct trade-off and high level financial models which will indicate the possible payback period and NPV on implementing such a change.
The principal advantages are:
- Higher classification efficiency.
- Lower maintenance in mill circuit.
- Substantial reduction in recirculating load (up to 500% reduction).
- Finer grind achievable through utilisation of available power
- Additional throughput (up to 40% ROM)
- Less overgrinding of metal fines resulting in flotation recovery benefits (up to 9% increase)
- Eliminates ultrafine metal medium formation in cyclones
AZMET’s latest test results has shown a considerable increase in recoveries on base metals.