METHOD FOR OBTAINING COBALT WITH REDUCTION MELTING OF COBALT OXIDES Russian patent published in 2013 - IPC C22B23/02 C22B4/04 

FIELD: metallurgy.

SUBSTANCE: method involves charge melting from cobalt oxides and carbon reducing agent, reduction and decarburisation of cobalt after complete melting. Melting is performed at content of carbon reducing agent in the charge of 16-21 wt %. Decarburisation is performed at the arc current force of 90-95% of its maximum value. When carbon concentration in cobalt reaches 0.3%, current force is set to maximum and equals to 6.3 kA.

EFFECT: increasing specific performance of the process and reducing specific power consumption.

1 tbl