Nickel ore is usually mined from underground mine and some in open pit mine. The run-of-mine nickel ore will be sent to Dressing plant which includes crushing process, washing process, grinding process, concentration process.
For the Copper-nickel sulfide ores, the main beneficiation method is flotation separation. The magnetic separation and gravity separation are usually secondary dressing method. Flotation of sulfide copper-nickel ore, it often uses copper sulfide flotation collector objects and foaming agents. A basic principle of flotation process to determine is rather that of copper into the nickel concentrates to avoid that of nickel into the copper concentrate. Because nickel in copper concentrate may be large losses in the smelting process, and copper in nickel concentrate can be more complete recovery.