低品位硅质岩型钒矿预富集—空白焙烧
—酸浸提钒工艺研究

现代矿业 ›› 2026, Vol. 42 ›› Issue (08): 96-100.

低品位硅质岩型钒矿预富集—空白焙烧 —酸浸提钒工艺研究

苏晓兰¹ 胡海锋¹冯媛媛¹阳建国¹ 陈延信²田战武³吴金鑫³

1. 中国有色金属工业西安勘察设计研究院有限公司；2. 西安建筑科技大学材料科学与工程学院； 3. 陕西金诚杰出钒业有限责任公司

出版日期:2026-08-25 发布日期:2026-08-21

Study on Pre-enrichment-Blank Roasting-Acid Leaching Vanadiun Extraction Process of Low-grade Siliceous Rock Type Vanadium Ore

SU Xiaolan1 HU Haifeng1 FENG Yuanyuan1 YANG Jianguo1 CHEN Yanxin2 TIAN Zhanwu3 WU Jinxin3

1. China Nonferrous Metals Industry Xi'an Engineering Investigation and Design Research Institute Co.，Ltd.；2. School of Materials Science & Engineering，Xi'an University of Architecture and Technology； 3. Shaanxi Jincheng Jiechu Vanadium Co.，Ltd.

Online:2026-08-25 Published:2026-08-21

摘要/Abstract

摘要： 针对低品位硅质岩型钒矿传统全量焙烧工艺能耗高、处理量大的问题，提出高压辊磨预富集—空白焙烧—酸浸联合工艺。通过高压辊磨—筛分预富集可抛除 47.80% 的尾矿量，大幅减少后续焙烧入炉量。原矿与预富集精矿的对比试验表明，预富集并不提高钒浸出率，其核心价值在于降低能耗与生产成本。最佳工艺条件为预富集获得 V₂O₅品位 1.22%、回收率 81.18% 的钒精矿；钒精矿在 860 ℃空白焙烧 24 h，焙烧产品在常温（30 ℃）、液固比 2 mL/g、酸用量 6%、浸出时间 2 h 条件下浸出，钒浸出率达 88.99%。采用拟悬浮态分层薄层焙烧改善物料受热均匀性，可以为工业放大提供技术参考。

关键词: 低品位钒矿, 预富集, 空白焙烧, 拟悬浮态焙烧

Abstract: Aiming at the problems of high energy consumption and large processing capacity in the traditional full roasting process of low-grade siliceous rock type vanadium ore，a combined process of high-pressure roller mill pre-enrichment-blank roasting-acid leaching was proposed. The amount of tail⁃ ings can be removed by 47.80% through high pressure roller mill-screening pre-enrichment，which greatly reduces the amount of subsequent roasting. The comparison test of raw ore and pre-enrichment concentrate shows that pre-enrichment does not increase the vanadium leaching rate，and its core value is to reduce energy consumption and production cost. The optimum process conditions are pre-enrichment to obtain va⁃ nadium concentrate with V2O5 grade of 1.22% and recovery of 81.18%. The vanadium concentrate was roasted at 860 ℃ for 24 h，and the roasted product was leached at room temperature（30 ℃），liquid-solid ratio of 2 mL/g，acid dosage of 6%，and leaching time of 2 h. The leaching rate of vanadium was 88.99%. The use of quasi-suspended layered thin-layer roasting to improve the heating uniformity of the material can provide a technical reference for industrial amplification.

Key words: low-grade vanadium ore, pre-enrichment, blank roasting, quasi-suspended roasting

苏晓兰, 胡海锋, 冯媛媛, 阳建国, 陈延信, 田战武, 吴金鑫. 低品位硅质岩型钒矿预富集—空白焙烧 —酸浸提钒工艺研究[J]. 现代矿业, 2026, 42(08): 96-100.

SU Xiaolan HU Haifeng FENG Yuanyuan YANG Jianguo CHEN Yanxin TIAN Zhanwu WU Jinxin. Study on Pre-enrichment-Blank Roasting-Acid Leaching Vanadiun Extraction Process of Low-grade Siliceous Rock Type Vanadium Ore[J]. Modern Mining, 2026, 42(08): 96-100.

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