弓长岭高品位磁铁矿精矿和低尾矿的选别技术

Technology for Separating Gongchangling High grade Magnetite Concentrate and Low grade Tailings

鞍钢弓长岭选矿厂磁选生产已运转４０年，在高品位磁铁矿精矿和低尾矿的选矿技术方面积累了丰富的生产经验。文中介绍了粗精矿生产工艺流程、高品位磁铁精矿生产工艺流程和低尾矿生产工艺流程。１９９８年生产铁精矿２２６５万ｔ，由于尾矿品位降低２１７个百分点，多产铁精矿１２３万ｔ。

Gongchangling Concentrator of Anshan Iron and Steel Company has run magnetic separation production for forty years and has accumulated rich experiences in separating high grade magnetite concentrate and low grade tailings.The production technological flowsheets for rougher concentrate,high grade concentrate and low grade tailings are described in the paper.In 1998,it produced 2.265 million ton iron concentrate and more concentrates (123 kt) and greater economical benefit (35.42 million yuan) were obtained as a result of a 2.17 percent point reduction in tailings grade.