【摘要】 钼精矿的氧化焙烧作为工业氧化钼制备的核心工艺，其热力学效率与产物纯度直接关联下游钼铁冶炼流程的能耗与产品质量。本研究基于某钼冶炼厂回转窑富氧焙烧工业化实践，通过系统对比富氧焙烧试验与原工艺生产参数，揭示了富氧焙烧技术对钼精矿回转窑工艺性能的优化机制。试验表明：富氧焙烧技术（O₂浓度25%～30%）通过强化气固传质效率与氧化反应动力学，使产能由9.5t/d提升至10.8 t/d,吨氧化钼综合能耗降低6.7%,产品氧化钼硫元素残留量稳定控制在0.08%以下。同时，烟气中SO₂浓度由1.6%提升至2.4%,耦合干湿法制酸工艺，实现硫酸回收率达98.5%,显著缓解了硫资源浪费与环境负荷。本研究为钼精矿氧化焙烧冶炼工艺的绿色低碳转型提供了兼具理论深度与工程可推广性的范式参考。更多还原

【Abstract】 As the core process of industrial molybdenum oxide preparation, the oxidative roasting of molybdenum concentrate has a direct relationship between its thermodynamic efficiency and product purity and the energy consumption and product quality of the downstream ferromolybdenum smelting process. This study focuses on the industrial practice of oxygen-enriched roasting in rotary kiln of a molybdenum smelter, and reveals the synergistic optimization mechanism of oxygen-enriched technology on the roasting and oxidation process performance of molybdenum concentrate by comparing the experimental data with the long-term production data. The result shows that the daily energy output is increased from 9.5 t/d to 10.8 t/d, the comprehensive energy consumption per ton of molybdenum is reduced to 6.7%, and the residual amount of product molybdenum oxide sulfur is stably controlled below 0.08% by strengthening the kinetics of gas-solid mass transfer and oxidation reaction in oxygen-enriched environment（25%～30%）. In addition, the concentration of SO₂ is increased from 1.6% to 2.4%. Coupled with the dry and wet acid production process, the recovery rate of sulfuric acid reaches 98.5%, which significantly mitigates the waste of sulfur resources and environmental load. This study provides a theoretical depth and engineering feasibility model reference for the green low-carbon transformation of molybdenum concentrate oxidation roasting smelting process.更多还原