Magnetofluid iron removal method

• Main Authors: YANG DAJIN, ZHU HAICHENG, SUN SIJING, WANG CHAODI, LI YANLIN, PEI QIFEI, WU SHIYAN
• Format: Patent
• Language: Chinese; English
• Published: 03.03.2023
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to a magnetic fluid iron removal method, which is characterized in that the surface of a characteristic magnetic seed provided by the invention has a plurality of active sites for goethite crystallization, so that the critical nucleation energy of goethite is reduced, and iron ions in a solution can be hydrolyzed and crystallized at the surface sites at a lower pH value to form large-particle inclusion-shaped iron slag; the large-particle iron slag is dense in texture, low in water content and high in iron grade, the slag output amount is reduced, and the purposes of efficiently removing iron, reducing zinc loss and reducing iron slag discharge are achieved. 本发明申请是关于一种磁流体除铁方法，本发明提供的特性磁种表面具有很多针铁矿结晶的活性位点，降低针铁矿的临界成核能，使溶液中的铁离子能在较低的pH值下在其表面位点水解结晶，形成大颗粒包裹体状铁渣，该大颗粒铁渣质地密实，含水低，铁品位高，使产出渣量减少，达到高效除铁、降低锌损失和减少铁渣排放的目的。