The invention relates the reclaiming nickel-to-cobalt method from nickel oxide ore and silicic acid nickel ore, comprising the following steps: milling the nickel oxide ore and silicic acid nickel ore to -200 mesh, adding 5-15% coke breeze, 10-30% chloration agent, and 0.1-1.0% adjuvant to make 5-15mm pellet, adopting chloridising separating and roasting, controlling the high temperature of rotary kiln at 1000-1300Deg.C and back kiln at 400-600Deg.C, the rotation rate of rotary kiln being 0.75-2 revolution per minute, time being 1-2 hours, then putting the product into magnet separator whose magnetic density is 1500-3000G, finally getting the cobalt-nickel ore, whose nickel grade is 5-15%, and recovery ratio is 80-85%, and whose cobalt grade is 0.3-1.7%, and recovery ratio is 70-80%. |