Development of an Online Blast Furnace Burden Profilometer
- 作者：Lu ChenYuanDu ShanWenKuo ShihKang
- 会议时间：2011-10-26
- 关键词：burden profile ; blast furnace ; online measuring
- 作者单位：Iron and Steel R&D Department, China Steel Corporation, Kaohsiung, Taiwan,China
- 母体文献：第八届(2011)中国钢铁年会论文集
- 会议名称：第八届(2011)中国钢铁年会
- 会议地点：北京
- 主办单位：中国金属学会
- 语种：chi
- 分类号：TP1;O6
摘要
A blast furnace is a huge reactor filled with pressure, thermo radiation, dust blast and corrosive gas, which make it very difficult for the online equipments to survive. These disadvantages make the development of an online burden profile measuring system a real challenge. However, reliable sensing technologies are necessary to provide useful information for operators, especially the burden profile formed by the charging sequences must be verified through an online burden profilometer. A burden profile contains important information in blast furnace operation. The shape of a burden profile influences the gas permeability in a blast furnace. Uniform gas permeability not only increases the heat utilization but also mitigates the heat load on the furnace shells. A well distributed burden profile stabilizes blast furnace operation and extends its campaign life. Moreover, an outstanding increment in both molten iron productivity and energy efficiency without additional expense will be obtained from the appropriate burden charging sequences set by the operators based on the monitoring of the online burden profiles. An online burden profile measuring system without gas leakage and heavy maintaining load has been expected for a long time. An application of the microwave radar ranging technology on a scanning system was developed at CSC for the online burden profile measurement. The compact design in scanning system successfully scaled down the space requirement for system installation on the top cone of a blast furnace. Compared with the solutions proposed by other system providers or manufacturers, in terms of its size, measuring resolution and maintenance cost, this system is proven to be the most promising one for online profile measurement. A systematic description of system development, installation arrangement at the top cone of a blast furnace, online measuring experiences, validation test, system comparison and a significant modification result in burden charging sequences are revealed in this paper.