5
Plant Trial
Figure 5A to E shows the 4E PGM head grade, final con-
centrate mass pull as well as 4E PGM recovery, 4E PGM
concentrate grade and 4E PGM tailings grade, respectively,
for the baseline frother (Senfroth 200) and Senfroth 153.
The 4E PGM head grade data shows similar head grades
of around 4.2 g/t 4E PGM for the baseline (Senfroth 200)
and Senfroth 153 (Figure 5A).
The whiskers, extending to the highest and lowest grades
that are not considered outliers, show the range of the data.
Senfroth 153 shows shorter whiskers, which means there is
Figure 2. 4E PGM recovery-concentrate mass pull data obtained during a Merensky ore hot
float screening of frothers with and without other reagents
Figure 3. Concentrate mass pull data obtained during a Merensky ore hot float screening of
frothers with and without other reagents