Ann: Investor Presentation (Canary Networks), page-30

They did state this in their Argentinean Project Update announcement on the 20th April 2018:

"Dark Horse’s overriding objective is to discover and define a large lithium rich pegmatite resource, develop mines to produce lithium ore, and ultimately establish a production facility in Argentina manufacturing battery grade lithium hydroxide for sale into the international battery and electronic markets."

Id say the spodumene concentrate production is just to get the ball rolling, and get some early cash in the door to help fund further development towards their ultimate goal stated above.