998 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
with the increase in average feed flow for each autoclave
being statistically significant.
Observe the noticeable narrowing in the shape of
the distributions for certain parameters where a substan-
tial standard deviation (SD) difference is evident. This is
particularly prominent in the case of Vent Temperature,
Vent Valve Position, and Autoclave Pressure.
While there is no notable change in Oxidation effi-
ciency, this is offset by effective control of the other process
parameters, working to optimize the overall process. The
Figure 9. AC150 Level distribution for AwaRE® OFF (left) and ON (right)
Figure 10. AC150 Oxidation efficiency distribution for AwaRE® OFF (left) and ON (right)
Table 1. Process parameters of AC150 for AwaRE® OFF and AwaRE® ON periods
Process Parameter
Average Standard Deviation
OFF ON Difference (%)OFF ON Difference (%)
Feed Flow (tph) 318.0 329.6 3.6 29.4 29.6 0.7
Vent Temperature (°C) 221.9 221.4 –0.2 2.1 1.3 –38.1
Vent Valve Opening (%)6.0 3.7 –38.3 9.5 4.1 –56.8
Autoclave Pressure (kPa) 3102 3104 0.1 13 6 –53.8
Autoclave Level (%)71.1 71.1 0.0 3.2 2.9 –9.4
Oxidation Efficiency (%)95.3 95.1 –0.2 1.8 1.4 –22.2
with the increase in average feed flow for each autoclave
being statistically significant.
Observe the noticeable narrowing in the shape of
the distributions for certain parameters where a substan-
tial standard deviation (SD) difference is evident. This is
particularly prominent in the case of Vent Temperature,
Vent Valve Position, and Autoclave Pressure.
While there is no notable change in Oxidation effi-
ciency, this is offset by effective control of the other process
parameters, working to optimize the overall process. The
Figure 9. AC150 Level distribution for AwaRE® OFF (left) and ON (right)
Figure 10. AC150 Oxidation efficiency distribution for AwaRE® OFF (left) and ON (right)
Table 1. Process parameters of AC150 for AwaRE® OFF and AwaRE® ON periods
Process Parameter
Average Standard Deviation
OFF ON Difference (%)OFF ON Difference (%)
Feed Flow (tph) 318.0 329.6 3.6 29.4 29.6 0.7
Vent Temperature (°C) 221.9 221.4 –0.2 2.1 1.3 –38.1
Vent Valve Opening (%)6.0 3.7 –38.3 9.5 4.1 –56.8
Autoclave Pressure (kPa) 3102 3104 0.1 13 6 –53.8
Autoclave Level (%)71.1 71.1 0.0 3.2 2.9 –9.4
Oxidation Efficiency (%)95.3 95.1 –0.2 1.8 1.4 –22.2