The Conversation (0)
South Boulder Mines (ASX:STB) announced that the pilot test for conducted for the Colluli SOP project definitive feasibility study (DFS) resulted in ultra-high purity potassium sulphate (SOP) grades. These results came from a series of pilot plant runs
conducted throughout March 2015 and the tests consistently achieved higher than industry standard grades.
Highlights from the pilots tests included:
- Colluli process consistently produces ultra-high purity potassium
- sulphate (SOP)
- 98 percent K2SO4 achieved in final Colluli product vs typical industry product of 94 percent K2SO4
- In conventional potash K2O reporting terms
- 52.9 percent K2O avg. grade SOP product from Colluli vs typical industry product 50.8 percent K2O
- Maximum Colluli K2O 53.2 percent
- Minimum Colluli K2O 52.4 percent
- Ultra-low Chlorine at < 0.1 percent
- Results repeatable over range of feed material and feed grade
- Optimised DFS process flow diagrams locked in
Paul Donaldson, managing director of South Boulder Mines, commented:
The Colluli project simply gets better and better. We have a process and a unique resource which combine to produce a premium fertiliser with a premium grade. The repeatability of the results with a diverse range of feed material demonstrates the robustness of the process. Global Potash Solutions and the Saskatchewan Research Council have done an excellent job on the Colluli process design, which is a commercially proven high yield, low energy input conversion to potassium sulphate achieved by combining KCl and kainite.
Click here to read the South Boulder Mines (ASX:STB) press release
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