Kachi – Process alternatives
In aprevious post I mentioned the Canadian listed Pure Energy Minerals brine project in the ClaytonValleyNevada (also the location of Anson ResourcesParadox Lithium project). The Pure Energy processing operation has been designed by ItalianTenova (founded in Argentinacirca 1946) with involvement of Frenchgiant SUEZ.
Below arelinks to details of that operation. Theprocess uses a combination of membranes and solvent extraction (SX) to achieve thesame result as a line incorporating Lilac's ion exchange process using specialbeads.
Bothprocesses claim aro. 90% extraction (compared to evaporation ponds 50%). Bothclaim aro 2 hour processing, both return the processed brine into the reservoiralthough where and what effect on dilution of the reservoir is not indicated
A differenceis that Lilac is still at bench scale(it is only a small part of the processing line). Lilac do not have the resourcesto design the entire line. Lake would go to a heavyweight such as Tenova or others forthat
The time linesfor the development of the Pure Energy plant suggest that the Lilac ion exchange concept isa later development which surfaced after the design of the Tenova extraction line was well advanced. The Lilacprocess could presumably replace the front end solvent extraction .
We know thatthe characteristics of all brines differ and it is not possible to figure what the effect of thelow Li concentrations at Kachi would have on a "Tenova" option , Possibly only a larger plant at thefront end of the process and double the cost to pump to and dispose of low concentration300 mg / l brine compared to 700 mg/l concentration . The Lilac process would have a smaller front end and would eliminate the chemical requirement for SX
a Tenova
The Lilacion exchange system has the potential to provide cost benefits over solventextraction
It isuseful to view these references to get an idea of the timing for development ofthe plant. Particularly interesting is the capital costof $600,000 (plus) for the pilot line and only $300 million for the full line.
TheTenova SX approach is at least one alternative eliminating evaporation ponds, increasing recoveries andreducing recovery time from months to hours. It is a safety netif Lilac is not cost competitive or runs into technical difficulties. There probablyare others.
A bit morecomfortable now. Presumably the shareholder who pitched in with the $500,000unsecured loan has similar sentiments
Video https://www.youtube.com/watch?v=LFDzl4cMuG8
Technologyoverview http://www.pureenergyminerals.com/technology-overview/
Projectoverview http://www.pureenergyminerals.com/projects1
Pilotplant (cost $600,000 plus)
Tenova https://www.tenova.com/product/lithium-processing
Note I haveno technical expertise to support these observations
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