CAJ | 학술논문

鲁南矿业有限公司铁矿石系鞍山式贫磁铁矿,现场生产反浮选尾矿品位达27%,以磁铁矿形式存在的铁占76.54%,存在回收的可能性。采用磁选—反浮选工艺对现场浮选尾矿进行再选试验,结果表明：在再磨细度为-0.043 mm占90%、磁场强度为110 kA/m时,可以得到铁品位为44.36%的磁选精矿,将其作为反浮选的给矿,在浮选温度为35℃,粗选NaOH用量为800 g/t、淀粉为700 g/t、CaO为300 g/t、MD-27为300 g/t、矿浆浓度为40%时,经1粗1精2扫闭路反浮选,得到的精矿铁品位为62.39%、回收率为49.36%,满足了公司对铁精矿品质的要求,可以作为现场流程改造的依据。
로남광업유한공사철광석계안산식빈자철광,현장생산반부선미광품위체27%,이자철광형식존재적철점76.54%,존재회수적가능성。채용자선—반부선공예대현장부선미광진행재선시험,결과표명：재재마세도위-0.043 mm점90%、자장강도위110 kA/m시,가이득도철품위위44.36%적자선정광,장기작위반부선적급광,재부선온도위35℃,조선NaOH용량위800 g/t、정분위700 g/t、CaO위300 g/t、MD-27위300 g/t、광장농도위40%시,경1조1정2소폐로반부선,득도적정광철품위위62.39%、회수솔위49.36%,만족료공사대철정광품질적요구,가이작위현장류정개조적의거。
Iron ore in Lunan Ming Co. ,Ltd. belongs to Anshan type lean magnetite. Iron grade of on-site reverse flotation tailings is 27%,76. 54% of which exists in form of magnetite,and can be recycled. Magnetic separation and reverse flotation technology for reconcentrationt of flotation tailings was conducted. The results indicated that at the regrinding fineness of 90%passing 0. 043mm and magnetic field intensity is 110 kA/m,magnetic concentrate with iron grade of 44. 36% is obtained and be treated as flotation feedings. Iron concentrate with iron grade of 62. 39% and recovery of 49. 36% was received at reverse rough flotation temperature of 35 ℃,NaOH dosage of 800 g/t,starch of 700 g/t,CaO of 300 g/t,MD-27 of 300 g/t,pulp den-sity of 40%,through one roughing-one cleaning-two scavenging closed cirouit reverse flotation process. The experiment results can meet the requirements of iron concentrate,and provide technique basis for transformation of dressing plant.