How clean can the nickel industry become?
2 All nickel products except ferronickel, nickel pig iron, and ore transformed into these ferroalloys. How clean can the nickel industry become? 3. Although part of this impact will be inherent to the deposit and processing methods, other aspects are somewhat manageable (Exhibit 4). Sulfide orebodies usually extend in depth but with a limited footprint. The produced concentrates need to be,Nickel: smelting, producing-Metalpedia,In hydrometallurgical processes, nickel sulfide ores undergo flotation (differential flotation if Ni/Fe ratio is too low) and then smelted. After producing the nickel matte, further processing is done via the Sherritt-Gordon process. First, copper is removed by adding hydrogen sulfide, leaving a concentrate of only cobalt and nickel. Then, solvent extraction is used to separate the cobalt and,Nickel Ore - an overview | ScienceDirect Topics,The smelting of ferronickel using lean nickel ores usually starts with roasting (calcining) of the ore mixture with limestone (~one third of the ore), anthracite (~1/10 of the ore amount), and recycled dust. Roasting is carried out in rotary kilns (~3 m in diameter, ~75 m in length, with a hot zone length of 9 to 12 m in the case of lean ore processing). The treatment temperature should not,