X20BM11

竖炉焙烧；磁选管回收率(MTRR)；Rockwell自动化；综合自动化系统；智能优化 基于Rockwell自动化技术的竖炉焙烧过程综合自动化系统 严爱军 东北大学自动化研究中心 ,机器视觉 ,烟草机械

1 引 言

      选矿生产是钢铁工业的基础，虽然我国的铁矿资源丰富，但大多为品位较低的赤铁矿等难选矿石，其品位一般为33％左右，利用常规的磁选方法难以从这些原料中提取出高品位的铁质成分。为了改善对弱磁性赤铁矿矿石的分选效果，采用竖炉预先对矿石进行高温还原磁化焙烧，使弱磁性矿物变成强磁性矿物，然后再用磁选方法既可以得到铁精矿。于是，竖炉磁化焙烧过程直接关系到选矿的金属回收率与精矿品味等生产指标。控制好竖炉磁化焙烧过程是提高选矿过程金属回收率与精矿品味的关键。

      竖炉是将弱磁性铁矿石（主要成分Fe2O¬3）在加热带进行加热，然后落入还原带，在一定浓度还原剂、一定温度下，使Fe2O¬3还原成强磁性的磁铁矿Fe3O¬4的热工设备，工艺过程俗称磁化焙烧。竖炉于1926年世界始建。我国首次于1966年由鞍山黑色冶金矿山设计院设计竖炉[1]。

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厦门莫格电气自动化有限公司

联系人    ：  黄工

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