• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Alternative Routes of Iron and Steelmaking ICARISM'99, Sep 15-17, 1997, Perth, WA >Study of a Two-Stage Smelting Reduction Process for Ironmaking by a Thermochemical Model
【24h】

Study of a Two-Stage Smelting Reduction Process for Ironmaking by a Thermochemical Model

机译：热化学模型研究炼铁两阶段冶炼工艺

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A thermochemical model is developed to study the two-stage smelting reduction process for ironmaking without post-combustion. Steady-state multi-material and heat balance equations are solved simultaneously to study the effect of metallisation, slag basicity, coal rank and heat loss on consumption rates of coal, ore, flux and oxygen and production rate of slag to produce hot metal of a given composition, tapped at a given temperature. The model is applied to the commercial data for a COREX-plant producing a wide range of hot metal compositions, tapped at different temperatures. The computed rates of coal, slag, flux, ore and oxygen were found to be close to the reported ones, but an exact match could not be obtained. It is found that a four per cent change in metallisation brings changes the coal rate by five per cent, flux rate by six per cent, slag rate by eight per cent and oxygen rate by 13 percent, while a ten per cent change in basicity changes the coal rate by ten percent, flux rate by 13 percent and oxygen rate by 22 percent. Further, it is found that an increase in metallisation decreases the coal rate and export gas. At a given percent metallisation, the coal rate and the export gas are lowest for anthracite compared to all other types of coal.
机译：建立了一个热化学模型，以研究不进行后燃烧的炼铁两阶段冶炼还原过程。同时求解稳态多材料和热平衡方程，以研究金属化，炉渣碱度，煤等级和热损失对煤，铁矿石，熔剂和氧气的消耗率以及炉渣产生率的影响。给定的成分，在给定的温度下拍打。该模型已应用于COREX工厂的商业数据，该工厂生产各种铁水成分，并在不同温度下进行攻丝。发现煤，炉渣，熔剂，矿石和氧气的计算速率与所报告的速率接近，但无法获得精确匹配。结果发现，金属化的4％的变化使煤率变化了5％，通量率变化了6％，矿渣率变化了8％，氧气变化率变化了13％，而碱度变化了10％煤率降低10％，通量率降低13％，氧气率降低22％。此外，发现金属化的增加降低了煤速率和出口气体。在给定的金属化百分比下，与所有其他类型的煤炭相比，无烟煤的煤炭利用率和出口气体最低。

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