In recent years, lots of research work has been carried out for nickel recovery from the nickeliferous laterite through atmospheric acid leaching. The separation and enrichment of nickel in the leachate from the atmospheric acid leaching of the nickeliferous laterite was preliminarily investigated in laboratory. A new idea that sulfate crystallization can be used to separate and enrich the nickel within nickeliferous laterite is presented in this paper, which is beneficial to the nickel recovery from the nickeliferous laterite. The sulfate crystallization experiments under different conditions indicate that the crystals crystallized from the atmospheric sulfuric acid leachate of nickeliferous laterite are mainly MgSO₄·H₂O. More significantly, the ratio of Fe and Ni is reduced greatly in the solid solution, which is conducive to the further purification and recovery of the nickel, though it is not effective to separate the Fe and Ni in the liquor by the simple sulfate crystallization. The utilization of sulfate crystallization to separate and enrich the nickel of nickeliferous laterite not only reduces the energy consumption but also contributes to the environment. It is thus a simple and economical industrial method. It is feasible to separate and recover the nickel from the atmospheric sulfuric acid leachate of the nickeliferous laterite.