电炉粉尘循环利用造泡沫渣

EAF Dust Recycling into the Furnace for Slag Foaming

摘要: 在实验室中研究了电炉粉尘和煤粉加入量及温度对泡沫渣高度的影响.结果表明,在电炉渣中加入0~30%的电炉粉尘和3%~12%的煤粉(质量分数)时,随粉尘及煤粉加人量的增加以及温度的提高,泡沫渣的最大发泡高度增加;在加入电炉粉尘造泡沫渣过程中,随温度升高,渣中ZnO的还原挥发速度加快,反应6 min,Zn的挥发率大于97%.在本实验条件下,反应3min,渣中Pb小于0.02%,温度对PbO的还原挥发速度无明显影响.

Abstract: The influence of EAF dust and coal amounts added into slag as well as temperature on the slag foaming height had been investigated in laboratory. The results show that the maximum slag foaming height increases, with the increase of EAF dust and coal amounts added as well as temperature. The reduction and evaporation rate of ZnO speeds up with the increase of temperature during slag foaming. The evaporation rate of ZnO is more than 97% in 6 min. Pb in slag is less than 0.02% in 3 min. Temperature seems to have no clear affect on the evaporation rate of Pb in slag.