Abstract:Hydrometallurgical industry always involve beneficiation, metallurgy, chemical engineering and many other processes, and there are many underlying harmful and hazard factors during hydrometallurgical industry production process, such as fire, corrosion, toxication, oxidation, high temperature, high pressure. However, the related safety assessment studies on hydrometallurgical construction project are very few. The fuzzy comprehensive evaluation method was applied to hydrometallurgical construction project safety assessment study in this paper, and a fuzzy comprehensive evaluation model of hydrometallurgical construction project safety risk was established. A Nickel