• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Preparation of BF Burden from Titanomagnetite Concentrate by Composite Agglomeration Process (CAP)
【24h】

Preparation of BF Burden from Titanomagnetite Concentrate by Composite Agglomeration Process (CAP)

机译：复合团聚工艺制备钛铁矿精矿高炉渣

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Titanomagnetite concentrate with high-TiO_(2) content, is endowed with poor sintering property due to the coarse granularity and poor hydrophilicity compared to the conventional TiO_(2)-free iron concentrates. In this study, Composite agglomeration process (CAP), an innovative route for preparing blast furnace burden, was introduced to overcome the difficulties in titanomagnetite concentrate sintering. CAP results showed that the sinter yield of 75.52%, tumbler index of 62.87% and productivity of 1.633 t·(m~(2)·h)~(?1) were achieved in a laboratorial sinter pot. They are 17.38%, 13.08% and 17.82% higher than those of traditional sintering process (TSP) respectively. Moreover, CAP lowered solid fuel consumption by 3.52 kg_(coke)/t_(product). In addition, the reduction disintegration index of the product (RDI_(+3.15)) was improved by 20.61%, while reduction index (RI) was decreased by 4.34%. In the CAP process of preparing BF burdens from titanomagntite concentrate, very few perovskite was generated in the pelletized part of CAP product for low CaO content. In the matrix part of CAP product, a large number of SFCA generated after perovskite fully crystallized from sinter melting for ultra-high CaO containing, thus the negative effects of perovskite on sinter quality were offset by SFCA for its excellent bonding property. Some melting phases in matrix part permeated through the outer layer of pellets and formed an interweaving structure, which bonded the pelletized part and matrix part together. As a results of this kind of mineralization mechanism, the high strength and excellent RDI property of CAP product were obtained, which proves that CAP is an effective agglomeration measure treatment for titanomagnetite concentrate.
机译：与传统的不含TiO_（2）的铁精矿相比，具有较高TiO_（2）含量的钛铁矿精矿具有较差的烧结性能，这归因于其粗大的粒度和较差的亲水性。在这项研究中，介绍了一种用于制备高炉炉渣的创新方法复合集聚工艺（CAP），以克服钛磁铁矿精矿烧结中的困难。 CAP结果表明，在实验室用烧结炉中，烧结矿的产率为75.52％，滚筒指数为62.87％，生产率为1.633 t·（m〜（2）·h）〜（？1）。它们分别比传统的烧结工艺（TSP）高17.38％，13.08％和17.82％。此外，CAP使固体燃料消耗降低了3.52 kg_（焦炭）/ t_（产品）。此外，产品的还原崩解指数（RDI _（+ 3.15））提高了20.61％，还原指数（RI）降低了4.34％。在由钛磁铁矿精矿制备高炉物料的CAP工艺中，由于低CaO含量，CAP产品的颗粒化部分很少生成钙钛矿。在CAP产品的基体部分中，钙钛矿从烧结矿中完全结晶后就含有大量的CaO，生成大量的SFCA，因此钙钛矿对烧结矿质量的负面影响被SFCA抵消，因为它具有优异的粘结性能。基质部分中的一些熔融相渗透通过颗粒的外层，并形成交织结构，该结构将颗粒化部分和基质部分粘合在一起。由于这种成矿机理，CAP产品具有较高的强度和优良的RDI性能，证明CAP是钛磁铁矿精矿的有效附聚措施。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号