Compared to dry methods and stibnite-based processes, the wet-process production of antimony trioxide offers significant technical and economic advantages, primarily in four areas.

First, energy consumption is significantly lower. Dry methods and stibnite-based processes require oxidative roasting at high temperatures (800–1,000°C) involving repeated heating cycles, resulting in extremely high energy use. In contrast, the wet process relies mainly on chemical reactions; heating is required only during the drying stage (up to 150°C), making the overall energy consumption far lower than that of pyrometallurgical methods and aligning with green manufacturing and carbon reduction goals.

Second, product quality is more stable and controllable. The wet process achieves precise stoichiometric control through steps such as antimony trichloride distillation, hydrolysis, and ammonolysis, yielding products with uniform particle size and high purity. Conversely, pyrometallurgical processes struggle to precisely control furnace temperature and atmosphere, leading to issues like over-oxidation or incomplete reduction that compromise quality stability.

Third, it offers superior environmental performance. Dry high-temperature roasting generates large volumes of sulfur- and dust-laden exhaust gas, placing a heavy burden on environmental treatment systems. The wet process operates within a closed system, resulting in minimal hazardous gas emissions; hydrochloric acid is recovered for reuse, and treated wastewater is recycled, significantly reducing the environmental footprint.

Fourth, it demonstrates greater adaptability to raw materials. The wet process can handle both metallic antimony and stibnite ore, with flexible requirements regarding raw material grade. Furthermore, low-temperature operation prevents antimony loss through volatilization, resulting in higher metal recovery rates.

In summary, the wet process outperforms traditional pyrometallurgical methods in terms of energy consumption, product quality, environmental impact, and raw material adaptability. It represents the direction of technological progress in the antimony chemical industry, and its application prospects are increasingly promising amidst tightening environmental regulations and rising energy costs.