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Investigation on Collector Optimisation in the Reverse – Iron Ore Flotation

机译：反铁矿浮选收集器优化研究

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摘要

It's expected that the world economy will face a stable and continuous growth in the demandrnof iron ore, reaching more than two billion tonnes per year within the next year. After decadesrnexploiting resources with high content of iron ore, now the industry faces the challenge to exploitrnand benefi ciate more complex ores.rnAccording to the industrial practice, the fl otation technology is one of the most important andrneffective benefi ciation processes to deal with low grade iron ores around the world. However, evenrnwith this, it is still necessary to search for new processing routes or promote the optimisation ofrnthe existing circuits.rnThe broad application of this technology is an outcome that deeply relies on the proper selectionrnof fl otation chemicals specifi cally designed for each system. New collectors are in continuousrndevelopment as fl otation performance signifi cantly relies upon their optimisation.rnThe reverse iron ore fl otation in Brazil, mainly constituted by haematite and quartz, uses etherrnamines as collector for silica minerals and caustic corn starch as depressor for haematite. Thernprocess selectivity is highly impacted by the features of the etheramine, such as:rn1. mono or di-etheramine,rn2. neutralisation degree,rn3. chain length,rn4. branched or linear chain,rn5. the fl otation pH, andrn6. the size distribution of the fl otation feed.rnThis paper describes the experience obtained from laboratory and industrial trials on differentrnores, conducted to improve the selectivity and recovery in the reverse iron ore fl otation by selectingrnthe required collector for low-grade ores.
机译：预计世界经济对铁矿石的需求将持续稳定增长，明年将达到每年20亿吨以上。经过数十年的高铁矿石资源开采后，如今该行业面临着开发和选矿更复杂矿石的挑战。根据工业实践，浮选技术是处理低品位铁的最重要且最有效的选矿工艺之一。世界各地的矿石。然而，尽管如此，仍然有必要寻找新的加工路线或促进对现有电路的优化。这种技术的广泛应用深深地依赖于为每个系统专门设计的适当的漂浮化学品。随着浮选性能的明显提高，新的捕收剂也在不断发展。巴西的反向铁矿浮选主要由赤铁矿和石英组成，使用醚胺作为二氧化硅矿物的捕收剂，而苛性玉米淀粉作为赤铁矿的抑制剂。醚胺的特性（例如：rn1）极大地影响了工艺的选择性。单或二醚胺，rn2。中和度，rn3。链长，rn4。分支或线性链，rn5。浮动pH和6。本文介绍了从实验室和工业试验中获得的不同矿产的经验，这些经验是通过选择低品位矿石所需的收集器来提高反向铁矿石浮选的选择性和回收率的。

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  • 来源
    《Iron ore 2011》|2011年|p.361-366|共6页
  • 会议地点 Perth(AU)
  • 作者

    M S Cassola; K U Pedain;

  • 作者单位

    Clariant Mining Services, Av. Na??es Unidas, 18.001, 04795-900- S?o Paulo, SP, Brazil. Email: monica.cassola@clariant.com;

    Industrie Park H?chst, D561, 65 926 Frankfurt am Main, Germany. Email: KlausUlrich.Pedain@clariant.com;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 铁矿石;
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