In this study, ZSM‐5, which is a Mobil‐type five‐type zeolite with well‐defined crystal morphology, is successfully synthesized via a seed‐assisted, liquid‐free method that uses iron ore tailings as a silica source. The ZSM‐5 crystallization kinetics at 423, 433, and 443 K and different synthesis times are investigated to identify the nucleation and crystallization mechanisms of the synthesized ZSM‐5 zeolites, and results suggest that the crystallization kinetics follow a Kolmogorov‐Johnson‐Mehl‐Avrami‐type behavior. The activation energies for the induction and transition periods are 112.38 and 58.35 kJ mol−1, respectively. Furthermore, the Avrami exponent indicates three‐dimensional crystal growth from both sporadic and instantaneous nucleation mechanisms. A comparison of our results with previous reports of the ZSM‐5 crystallization mechanism demonstrates that the seed crystals play a significant role in nucleation and crystal growth. Finally, seed surface crystallization and new nuclei crystallization dual mechanism has been proposed to describe the crystallization process of ZSM‐5.