铁含量控制研究进展

发布时间：2018-04-16 12:31

本文选题：除铁 + 石英砂　；参考：《矿产综合利用》2017年06期

【摘要】：在轻工业生产、湿法冶金、水处理等行业,铁含量控制是普遍性问题。本文主要介绍了非金属矿物、金属湿法冶金、以及水处理等行业常用的除铁方法。磁选是非金属矿物和碱性金属湿法冶金首选的除铁方法。但由于非金属矿含铁成分的多样性,以及设备和技术限制,有些产品通过磁选除铁后质量不达标,须结合化学浸出法进一步除铁。酸性湿法冶金除铁主要利用化学沉淀法,以针铁矿法应用最为广泛。氢氧化铁法,多以胶体状态,过滤性能较差。膜分离技术近年来发展迅速,目前以微滤膜(孔径50 nm)为主,主要应用在生物医药、化工与石化、食品与饮料、特种水处理等领域。地下水除铁,广泛采用锰砂滤料——接触性催化氧化法。无机化工产品进一步提纯到很高纯度,一般通过电化学或物理方法。
[Abstract]:Iron content control is a common problem in light industry, hydrometallurgy, water treatment and other industries.This paper mainly introduces the methods of iron removal in non-metallic minerals, metal hydrometallurgy and water treatment.Magnetic separation is the preferred iron removal method for non-metallic minerals and alkaline metal hydrometallurgy.However, due to the diversity of iron-bearing elements in non-metallic ores, as well as the limitation of equipment and technology, the quality of some products after iron removal by magnetic separation is not up to standard, so further iron removal must be combined with chemical leaching method.The chemical precipitation method is mainly used for iron removal by acid hydrometallurgy, and goethite is the most widely used method.Iron hydroxide process is mostly colloidal, and its filtration performance is poor.Membrane separation technology has been developed rapidly in recent years. At present, microfiltration membrane (pore size 50 nm) is mainly used in biomedical, chemical and petrochemical, food and beverage, special water treatment and other fields.Manganese sand filter material-contact catalytic oxidation is widely used to remove iron from groundwater.Inorganic chemical products are further purified to very high purity, generally by electrochemical or physical methods.
【作者单位】：神华准能资源综合开发有限公司研发中心;北京低碳清洁能源研究所煤资源利用重大课题研究中心;
【基金】：国家科技部“十二五”科技支撑计划项目(2011BAA04B05)
【分类号】：TD985;TF111.3;TQ085.4

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