CAJ | 학술논문

赤泥是氧化铝冶炼工业中排放的一种强碱性固体废弃物.为降低赤泥中碱的含量,实现赤泥综合、资源化的利用,对水洗脱碱工艺进行了初步研究.实验结果表明,洗涤次数和浸泡时间对脱碱效果影响较大,在室温下,液固比为5∶1时,赤泥浸泡1d后,洗涤5次以上时,可以去除赤泥中95%以上的Na＋.
적니시양화려야련공업중배방적일충강감성고체폐기물.위강저적니중감적함량,실현적니종합、자원화적이용,대수세탈감공예진행료초보연구.실험결과표명,세조차수화침포시간대탈감효과영향교대,재실온하,액고비위5∶1시,적니침포1d후,세조5차이상시,가이거제적니중95%이상적Na＋.
Red mud is a strong basicity solid waste residue of alumina refinery industry.In this paper,the effect of water washing process on reduction of alkali content of red mud has been preliminary studied.Results show that water washing number and soaking time have a great impact on removal of free alkali in red mud.At room temperature,when the water：solid ratio reaches to 5∶1,after having been soaked 1 d and washed 5 times,95% free alkali in red mud can be removed.