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Desulfurization Ability of Metallurgical Dusts from Blast Furnace Ironmaking Process

机译:高炉炼铁过程中冶金粉尘的脱硫能力

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摘要

The sulfur capacity of metallurgical dusts from blast furnace ironmaking processes was measured in the temperature range from 298 to 923 K. The experimental results show that the sulfur capacity of metallurgical dusts is considerably increased with the increase of temperature from 298 to 923 K. The desulfurization ability of metallurgical dusts is mainly depend on its content of oxides of ZnO, PbO, CaO and MnO when the temperature is lower than 623 K, but when the temperature is higher than 623 K the contributions of iron oxides become dominant. Carbon content, due to its absorption effect, has a positive effect on the desulfurization ability of metallurgical dusts below 623 K. If the temperature increased to higher than 623 K the absorption effect of carbon disappears and the role of desulfurization reaction between H_2S and the metal oxide such as ZnO, PbO, Fe_2O_3, CaO and MnO as well as the H_2S diffusion in intraparticle of metallurgical dusts seems more important.
机译:在298至923 K的温度范围内测量了高炉炼铁工艺产生的冶金粉尘的硫容量。实验结果表明,随着温度从298至923 K的升高,冶金粉尘的硫容量显着增加。当温度低于623 K时,冶金粉尘的能力主要取决于其ZnO,PbO,CaO和MnO的氧化物含量,但当温度高于623 K时,铁氧化物的贡献就占主导地位。碳含量由于其吸收作用而对623 K以下的冶金粉尘的脱硫能力产生积极影响。如果温度升高到623 K以上,碳的吸收作用就会消失,H_2S与金属之间的脱硫反应也将起作用ZnO,PbO,Fe_2O_3,CaO和MnO等氧化物以及H_2S在冶金粉尘颗粒内的扩散似乎更为重要。

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