某石英砂岩磁浮酸浸煅烧再酸浸联合除杂提纯工艺研究

金属矿山 ›› 2025, Vol. 54 ›› Issue (12): 145-149.

某石英砂岩磁浮酸浸煅烧再酸浸联合除杂提纯工艺研究

聂轶苗　王　硕　杜孟泽　王　玲　刘淑贤　于晓东　王　龙　王　森

华北理工大学矿业工程学院,河北唐山 063210

出版日期:2025-12-15 发布日期:2025-12-31
作者简介:聂轶苗(1979—),女,教授,博士,硕士研究生导师。
基金资助:
河北省自然科学基金项目(编号:E2022209119);河北省中央引导地方科技发展资金项目(编号:236Z3804G);黑龙江省揭榜挂帅项目 (编号:2023ZXJ05A02)。

Study on the Combined Impurity Removal and Purification Process with Magnetic Floating,Acid Leaching, Calcination and Acid Leaching for a Quartz Sandstone

NIE Yimiao　WANG Shuo　DU Mengze　WANG Ling　LIU Shuxian　YU Xiaodong　WANG Long　WANG Sen

School of Mining Engineering,North China University of Science and Technology,Tangshan 063210,China

Online:2025-12-15 Published:2025-12-31

摘要/Abstract

摘要： 某石英砂岩表面可见明显的铁锈状浸染痕迹,石英颗粒多被黏土类矿物及硅质胶结物紧密胶结,杂质嵌布粒度细微且分布不均,主要含铁、钛杂质矿物包括黄铁矿、钛铁矿和磁铁矿等。为开发利用该矿石资源,开展了除杂提纯工艺研究。结果表明,SiO2 品位为98.07%的矿样经过碎磨、脱细脱泥、强磁选脱杂,再经过1次中性反浮选、1 次碱性正浮选,氢氟酸+磷酸混酸酸浸—煅烧再酸浸,最终获得SiO2 含量高达99.979%,总杂质含量降至212.1 g/t, 关键限制性杂质Al、Fe、Ti的累计总去除率分别达到98.58%、95.89%和87.95%的石英砂精矿,达到低铁石英砂质量标准。

关键词: 石英砂岩　脱细脱泥　强磁选　反浮选　正浮选　氢氟酸磷酸混合酸浸　煅烧　除杂提纯

Abstract: The surface of a certain quartz sandstone exhibits distinct rust-like staining.The quartz grains are tightly ce mented by clay minerals and siliceous cement,with fine and unevenly distributed impurities.The main iron and titanium-contai ning impurity minerals include pyrite,ilmenite,and magnetite,among others.To exploit and utilize this ore resource,a process study was conducted to remove impurities and purify the material.The results showed that after crushing and grinding,define and desliming,and high-intensity magnetic separation,followed by one neutral reverse flotation and one alkaline direct flota tion,and finally a mixed acid (hydrofluoric acid + phosphoric acid) leaching,calcination,re-leaching process,a quartz sand concentrate with an SiO2 content of up to 99.979% was obtained from a feed sample with an SiO2 grade of 98.07%.The total impurity content was reduced to 212.1 g/t,and the cumulative total removal rates of the key limiting impurities Al,Fe,and Ti reached 98.58%,95.89%,and 87.95%,respectively,meeting the quality standard for low-iron quartz sand.

Key words: quartz sandstone,define and desliming,high-intensity magnetic separation,reverse flotation,direct flotation, mixed acid leaching with hydrofluoric and phosphoric,calcination,impurity removal and purification

中图分类号:

TD97

聂轶苗　王　硕　杜孟泽　王　玲　刘淑贤　于晓东　王　龙　王　森. 某石英砂岩磁浮酸浸煅烧再酸浸联合除杂提纯工艺研究[J]. 金属矿山, 2025, 54(12): 145-149.

NIE Yimiao　WANG Shuo　DU Mengze　WANG Ling　LIU Shuxian　YU Xiaodong　WANG Long　WANG Sen. Study on the Combined Impurity Removal and Purification Process with Magnetic Floating,Acid Leaching, Calcination and Acid Leaching for a Quartz Sandstone[J]. Metal Mine, 2025, 54(12): 145-149.

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