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中铝郑州研究院,突破赤泥选铁两大关键技术!

  • 2026-04-04 19:42:47
中铝郑州研究院,突破赤泥选铁两大关键技术!

赤泥,这个曾被视作氧化铝生产过程中“烫手山芋”的工业废渣,不但占用大量土地,而且具有巨大的环境风险,是困扰铝工业绿色发展的“老大难”。可在中铝郑州有色金属研究院有限公司(以下简称“中铝郑州研究院”),赤泥却被赋予了新的生命——从“废”到“宝”,从“包袱”到“资源”,一场围绕赤泥的绿色革命正在悄然展开。

项目组成员集体讨论赤泥有价元素嵌布特征与回收利用方案

2025年,由中铝郑州研究院提供技术支撑的高铁赤泥选铁生产线创造了良好的效益。实践背后,是一场持续多年的技术突围战,更是一条从实验室“破茧”、在生产线“化蝶”的创新之路。

赤泥选铁指标分析与技术方案改进指导

为了提高利用率,中铝郑州研究院根据不同企业赤泥的产出规模和品位高低确定不同的技术线路,并从工艺可行性到设备匹配度,从成本效益到产能布局,进行逐一评估和科学规划。在技术攻关阶段,中铝郑州研究院研发团队人员一头扎进实验室,从浮选到磁选、重选,单一工艺还是联合工艺,轮番进行尝试,并精准优化药剂配比、磁场强度、矿浆浓度等每一项参数。“有时候为了一个关键数据,要连续做几十组对比试验。”一位负责工艺优化的工程师感慨,“但看到数据一点点往上走,就觉得再累也值了。”通过反复对试验数据的动态分析和优化,团队成功开发出两项拥有自主知识产权的核心技术——“多尺度—多力场耦合协同选铁技术”和“强化磁选靶向分离选铁技术”。

一种从细粒级赤泥选铁尾矿中提铁的方法

所述选铁尾矿的铁含量≥18%,所述方法包括:以第一预设质量比,将磁性种子和选铁尾矿第一混合,得到粗选原料;将粗选原料第一磁选分离,得到第一铁精矿与粗选尾矿;以第二预设质量比,将磁性种子和粗选尾矿第二混合,得到扫选原料;将扫选原料第二磁选分离,得到第二铁精矿和处理尾矿;将第一铁精矿和第二铁精矿磁性种子回收,得到磁性种子和铁精矿。该方法通过磁性种子的精准定量投加、矿浆体系的微界面调控、磁团聚的分级强化及磁种的闭环再生等策略,提升赤泥尾矿中铁的总回收率≥45.82%,同时铁精矿的铁含量≥46.33%。

一种从拜耳法高铁赤泥中选铁的方法

所述方法包括:将拜耳法高铁赤泥预筛分和调浆处理,得到混合矿浆;将混合矿浆梯度磁选分离,得到第一铁精矿、磁选尾矿和多组磁选精矿;将磁选精矿依次合并和分级,得到粗粒级铁精矿和细粒级铁精矿;将粗粒级铁精矿缩分处理,得到第一组粗粒级铁精矿和第二组粗粒级铁精矿;将第一组粗粒级铁精矿和磁选尾矿混合,得到混合矿料;将混合矿料再分离,得到分离铁精矿;合并各类铁精矿,得到第二铁精矿。该方法通过多段组合磁选、物料循环再选和粒度分级优化的协同作用,同步提高了铁精矿的品位和回收率。

技术突破只是第一步,落地生金才是硬道理。中铝郑州研究院与中铝股份下属企业共建技术攻关与中试平台,研发人员长期驻扎在企业生产一线,与生产骨干并肩作战,边试验、边改进、边验证,真正实现了研发与生产的无缝对接。“以前是研究院出方案,企业照着做,遇到问题还得来回沟通。”生产企业的一位负责人说,“现在他们的人就驻在厂里,有问题现场拍板解决,效率高多了。”

在双方齐心协力下,分选效率低、铁精矿品位低、综合利用率不高——这些曾经让人头疼的“老大难”,在现场被一个个啃了下来。在一条生产线稳定运行的基础上,由中铝郑州研究院提供技术支撑的中铝股份另一企业赤泥选铁生产线正在紧锣密鼓建设中。

从“废渣”到“富矿”,从实验室到生产线,中铝郑州研究院用实践证明:赤泥里,真有“金子”。而这背后,是他们对“科技兴企、创新驱动”的执着坚守,更是他们把论文写在生产一线的生动注脚。

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  1. CONNECT:[ UseTime:0.000675s ] mysql:host=127.0.0.1;port=3306;dbname=i460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001024s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001546s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001084s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001335s ]
  6. SELECT * FROM `set` [ RunTime:0.001720s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001582s ]
  8. SELECT * FROM `article` WHERE `id` = 499417 LIMIT 1 [ RunTime:0.026945s ]
  9. UPDATE `article` SET `lasttime` = 1775444697 WHERE `id` = 499417 [ RunTime:0.006650s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.005722s ]
  11. SELECT * FROM `article` WHERE `id` < 499417 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.023319s ]
  12. SELECT * FROM `article` WHERE `id` > 499417 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.013401s ]
  13. SELECT * FROM `article` WHERE `id` < 499417 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.078273s ]
  14. SELECT * FROM `article` WHERE `id` < 499417 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.026172s ]
  15. SELECT * FROM `article` WHERE `id` < 499417 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.011948s ]
0.336315s