The CPC Report showed only the first line of the tale below. I thought I would add the values for the range of contract prices and spot prices as well. NOTE: I don’t know the criteria for obtaining spot prices.
I then tried to get an idea of the equivalent table when the source material is spodumene not mica since a lot more material has to be refined in the mica case.
LSPP for Micas.
Costs from the CPC report and sales prices from the Ref below.
Material costs $3960/t Li2CO3
Hydro plant operation costs $5600 to $6400/t
So LSPP operating costs are $9560 to $10360/t
Column 1 Column 2 Column 3 Column 4 Column 5 0 Prodn cost/t selling cost/t
contract prselling cost/t
spot priceprofit/t profit on 2500 t 1 2 9560 10000 440 1,100,000 3 9560 16000 4440 11,100,000 4 9560 18000 8440 21,100,000 5 9560 21000 11440 26,600,000 6 10360 10000 -360 -900,000 7 10360 16000 3640 9,100,000 8 10360 18000 7640 19,100,000 9 10360 21000 10640 26,600,000
Note: Sale of byproducts would increase profits significantly.
How could this translate to production of Li2CO3 from Spodumene using SiLeach?
Assume that ANSTO’s solution for removing the precipitated gypsum (calcium sulphate dihydrate) will work and will not introduce significant extra Hydro processing cost. i.e., Hydro plant operating cost is 5600 to 6400 per tonne.
To get some idea of the profits prior to inclusion of transport costs of the source material, suppose the source material is 6% spodumene concentrate, which can be bought for $905/t (current GXY sale price.) So you can make calcium carbonate from spodumene using SiLeach for US$6505 to US$7305/t including material cost but not including transport to the Hydro factory.
Note the difference in the cost of source materials, $905 for spodumene and $3960 from mica (4.37 times as much.)
For ease of reference I have added the spodumene table below- note: no transport costs included here.
Column 1 Column 2 Column 3 Column 4 Column 5 0 Prodn cost/t selling cost/t contr pr selling cost/t spot pr profit/t profit on 2500t 1 6505 10000 3495 8,737,500 2 6505 16000 9495 23,757,500 3 6505 18000 11495 28,737,500 4 6505 21000 14495 36,237,500 5 7305 10000 2695 6,737,500 6 7305 16000 8695 21,737,500 7 7305 18000 10695 26,737,000 8 7305 21000 13695 34,237,500
I see lots of potential upside here and look forward to LIT clarifying the SiLeach spodumene processing costs.
I also recall that the PCT announcement on the international patent is due to be released mid August.
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