Nickel Laterite Roasting Solutions

Scheme Overview

　　The rotary kiln reduction–magnetic separation process involves drying, crushing, and screening the raw ore, then blending it with fluxes and reducing agents to form pellets. These pellets are dried and subjected to high‑temperature reduction roasting, after which the roasted product is quenched in water, crushed, screened, and further sorted to yield a spongy, granular nickel‑iron product, enabling highly efficient nickel recovery. The process features low capital investment, reduced energy consumption, and lower production costs—on average, refining one ton of nickel‑iron powder costs RMB 1,800–2,000 less than using a smelting furnace. Moreover, the resulting nickel‑iron exhibits superior quality: with a feed grade of Ni = 2%, Fe = 15%, and a recovery rate of 90%, the final product contains approximately 11.8% Ni and can be used directly as a raw material for stainless steel production.

Process flow

Laterite Nickel Ore Solutions