Canadian Mining Journal


COBALT: First Cobalt tests feedstock for refinery

Testing at First Cobalt’s refinery in Northern Ontario indicate that it can accept cobalt hydroxide as a feedstock. (Image: First Cobalt)

ONTARIO – Toronto-based First Cobalt Corp. reports on the feedstock testing at its cobalt refinery in the town of Cobalt. Tests have assessed the suitability of cobalt hydroxide as a feedstock, and the results are promising.

The company says the refinery successfully leached 98% of the metal from the cobalt hydroxide with head grades in excess of 20% cobalt. Solvent extraction was then used to remove additional contaminants.

Additional cobalt extraction tests are underway and will be followed by sulphate crystallization to produce cobalt sulphate. The results are expected by the end of the quarter. If feed grades remain over 20% cobalt, bypassing the autoclave circuit may be possible and then refinery throughput would increase.

First Cobalt has posted detailed results in the news release of Jan. 30, 2019. Please visit