首页> 外文会议>International Conference on New Smelting Reduction and Near Net Shape Casting Technologies for Steel New Smelting Reduction >SEMI-INDUSTRIAL TESTS OF IRONMAKING BY COAL-BASED SMELTING REDUCTION OF CARBON-BEARING PELLETS
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SEMI-INDUSTRIAL TESTS OF IRONMAKING BY COAL-BASED SMELTING REDUCTION OF CARBON-BEARING PELLETS

机译:通过煤料冶炼颗粒熔炼炼铁炼制的半工业试验

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摘要

An ironmaking process which can continuously produce hot metal by using iron concentrate and non-coking coal and air as raw materials in the cupola using coal fines as a fuel only, has been suggested by authors. In the process, the heat is supplied by the swirling flow combustion of coal fines and air in a horizontal front furnace and the resultant hot gas goes into a shaft furnace through an arch fire-culvert to preheat and prereduce the cold-bonded coal-bearing pellets. The prereduced pellets are melted, overheated and fully reduced at the arch fire-culvert and the bottom of shaft furnace, then the produced melts float into the front furnace to fulfil the separation hot metal from slag. Some semi-industrial tests of this ironmaking process were carried out, in which the consumption of coal and electricity was 916 Kg and 80 Kwh respectively. The recovery ratio of iron was about 92 percent and the hot metal productivity was 6 T/D.M3. The process may be developed into a commercial ironmaking process by only using non-coking coal and iron concentrates.
机译:通过使用煤粉作为燃料,可以通过使用铁浓缩物和非焦煤和空气作为燃料作为燃料的原材料可以连续生产热金属的炼铁工艺。在该过程中,通过煤粉的旋流流燃烧和水平前炉中的空气的旋转流动燃烧,所得的热气体通过拱形滤波器进入轴炉,以预热和预防冷粘合的煤轴承颗粒。在拱形抑制和轴炉底部熔化,渗透并完全减少了渗透性的颗粒,然后产生的熔体漂浮到前炉中以实现离渣的分离热金属。进行了这种炼铁工艺的一些半工业试验,其中煤炭和电力的消耗分别为916千克和80 kWh。铁的恢复比约为92%,热金属生产率为6吨/ d.m3。通过仅使用非焦煤和铁浓缩物,可以将该方法开发成商用炼铁工艺。

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