Murphy West Uranium Project Overview
Kennedy Project: Positive Metallurgy Supports Next Stage
REO
pH 4
0.5hr
Av Recovery
AMSUL Leach
AMSUL Leach AMSUL Leach
pH 3
pH 4
24hr¹
0.5hr
Av Recovery
Metallurgical test work confirms Ionic Adsorption REE Clays
%
%
Av Recovery
%
Rapid recoveries by desorption of REES in first 30 minutes
using ammonium sulphate (AMSUL) solution in weak acid
conditions (pH4)
La₂O3
43
47
46
Ce₂03
1
2
4
Prб011
38
45
NdO3
40
48
•
Very low acid consumptions
SmO3
35
Very low dissolution of cerium (Ce2O3)
EuO3
34
Very low dissolution of gangue elements (incl iron, aluminium
and calcium)
GdO3
36
Tb407
31
4 % + 7 8
49
51
44
46
43
49
44
51
38
47
Dy203
29
37
44
.
Further increase in REE recovery by lowering AMSUL
leach to pH3 without significant increase in acid
Ho₂O3
29
36
43
consumption.
Er₂O3
26
33
40
Tm2O3
22
29
32
Yb₂O3
19
26
31
Lu₂O3
20
24
49
Y₂03
37
43
49
Acid Consumption
1 see Company ASX Announcment 16 May 2023
3.3 kg/t
3.9 kg/t
11.5 kg/t
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