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Improving the Granulating and Sintering Performance by Pretreating Concentrates Using a Roller Press

机译:通过使用辊压机进行精矿预处理来提高制粒和烧结性能

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摘要

In this paper, the pretreatment of concentrates by roller press was present to improve therngranulation of blends comprising some 30 per cent iron ore concentrates and enhance the sinteringrnperformance. It is shown that by pretreatment of fi ne concentrates through roller press, the contentrnof +3 mm fractions of granulation mixture and sinter mixture permeability are elevated by ten perrncent and 35 per cent. In the meantime, a sinter productivity increase from 1.51 - 1.62 t.m-2.h-1 isrnattainted in pot tests with similar sinter tumble index and at lower coke rate. The mechanismrnof the pretreatment of concentrates process to improve sintering performance of fi ne iron orernconcentrates was demonstrated by mineralogy that better permeability help form more calciumrnferrite and good microstructure of sinter, further proven by the better metallurgical performancernof sinter.
机译:在本文中,提出了通过辊压机对精矿进行预处理的方法,以改善包含约30%铁精矿的共混物的粒化并提高烧结性能。结果表明,通过辊压机对细粉精矿进行预处理,造粒混合物的含量+3 mm和烧结混合物的渗透率分别提高了10%和35%。同时,在烧结试验中,烧结矿的生产率从原来的1.51-1.62 t.m-2.h-1提高到了类似的烧结矿翻滚指数和较低的焦炭率。矿物学证明了精矿预处理过程改善细铁精矿烧结性能的机理,更好的渗透性有助于形成更多的亚铁酸钙和良好的烧结组织,而冶金性能更好则进一步证明了这一点。

著录项

  • 来源
    《Iron ore 2011》|2011年|p.575-578|共4页
  • 会议地点 Perth(AU)
  • 作者

    D Q Zhu; J Pan; T J Chun; D Chen;

  • 作者单位

    Central South University, HePing Building, Central South University, Changsha Hunan 410083, PR China. Email: dqzhu@mail.csu.edu.cn;

    Central South University, HePing Building, Central South University, Changsha Hunan 410083, PR China. Email: pjcsu@mail.csu.edu.cn;

    Central South University, HePing Building, Central South University, Changsha Hunan 410083, PR China. Email: springcsu@126.com;

    Central South University, HePing Building, Central South University, Changsha Hunan 410083, PR China. Email: chendong@126.com;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 铁矿石;
  • 关键词

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