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Cypress Development Provides Update on Prefeasibility Study for Clayton Valley Lithium Project in Nevada
VANCOUVER, British Columbia, June 17, 2019 (GLOBE NEWSWIRE) -- Cypress Development Corp. (TSX-V: CYP) (OTCQB: CYDVF) (Frankfurt: C1Z1) (“Cypress” or “the Compan
About this update from Century Lithium Corp
[{"type":"text","content":" VANCOUVER, British Columbia, June 17, 2019 (GLOBE NEWSWIRE) -- Cypress Development Corp. (TSX-V: CYP) (OTCQB: CYDVF) (Frankfurt: C1Z1) (“Cypress” or “the Company”) is pleased to provide an update on its current Prefeasibility Study (“PFS”) of the 100% owned Clayton Valley Lithium Project (Project), Nevada and other corporate matters. Timing of the PFS, led by Ausenco Engineering Canada, Inc., was changed by minor variations in scope and completion of key components. One alteration was drilling, delayed by weather and additional footage, the results were announced in the Company’s April 23rd press release. Work on the process flow sheet was extended and has required additional time to finalize and apply to plant design and cost estimates. Specific attention was given to the number of leach stages, and type of equipment needed for solid-liquid separation. Related studies are completed and supplementary testing is underway, with the goal of determining the most viable means of handling clay slurries during the leaching, washing, and purification phases. Work on the PFS Phase II metallurgical program continues. This work is focused on the purification and concentration of lithium in the final leach solutions. These studies are nearing completion and await results from testing of 3rd-party ion-exchange resins, and tests on the base-case assumption of concentration via evaporation. To provide slurry for rheology and filtration study, and pregnant leach solution (PLS) for the Phase II program, a 100 kg bulk-sample was prepared at Continental Metallurgical Services (CMS). The sample contained 1,256 parts per million (ppm) lithium and utilized material from drill holes DCH-15 and GCH-6. The sample was subjected to a single-stage leach under optimized conditions of time, temperature, solids ratio, and acid concentration. Leaching yielded approximately 300 liters of PLS grading 410 ppm Li, with an acid consumption of 124 kg/tonne and 84% extraction of lithium into the PLS. These results are similar to those from previous testing. Other work conducted for the PFS is completed or nearing completion with results of the study anticipated this summer. The resource model was updated by Global Resource Engineers (GRE), who are also in the process of completing an optimized mine plan and production schedule. For the mine plan, geotechnical testin...