摘要
企业拟采用废渣来改善生料易烧性,为了给废渣选用提供指导,以企业日常出磨生料、煤灰配制基础生料(KH=0.916,SM=2.46,IM=1.21),分别外掺ZnO、TiO_(2)、MnO_(2)、CuO与CaF_(2),比较各外掺物对生料易烧性的改善效果。结果表明,掺量为1%时,1 350℃烧成温度下,CuO对生料易烧性改善效果最好,TiO_(2)和ZnO次之,MnO_(2)与CaF_(2)对易烧性改善不大;高于1 400℃时,以TiO_(2)、ZnO和CaF_(2)改善易烧性效果最好,MnO_(2)次之,CuO效果最差。在1 400℃下,外掺物掺量由0.5%升至2.0%,ZnO和TiO_(2)对f-CaO含量降低效果受掺量影响较小,MnO_(2)和CaF_(2)受掺量影响较大,CuO掺量增加对f-CaO含量降低不利。从改善易烧性角度看,宜优先选用含锌、含钛和含氟废渣来改善熟料的烧成。
The enterprise intends to use solid waste to improve the burnability of raw meal. In order to provide guidance for the selection of waste residue, the base raw meal(KH=0.916, SM=2.46, IM=1.21) was prepared with mill exports raw meal and coal ash of the enterprise and doped with ZnO, TiO_(2), MnO_(2), CuO and CaF_(2), and the improvement effect of doped materials on the burnability was compared. The results showed that when the doping amount was 1%, under 1 350 ℃,CuO had the best effect on improving the burnability, TiO_(2) and ZnO were the second, and MnO_(2) and CaF_(2) had little effect on improving the burnability.When the temperature was higher than 1 400 ℃, TiO_(2), ZnO and CaF_(2) have the best effect on improving burnability, followed by MnO_(2), and CuO had the worst effect. At 1 400℃, the reduction of f-CaO content was less affected by ZnO and TiO_(2) from 0.5% to 2.0%, and affected obviously by MnO_(2) and CaF_(2). However the increase of CuO was unfavorable to the reduction of f-CaO content. It is worth considering to improve the burnability of raw meal with zinc,titanium and fluorine containing wastes.
作者
石小芳
高俊峰
王泳烽
武双磊
SHI Xiaofang(Hangzhou Shanya Nanfang Cement Co.LTD.,Hangzhou 311400,Zhejiang,China)
出处
《水泥》
CAS
2022年第12期1-4,共4页
Cement
关键词
外掺物
废渣
F-CAO
doped material
waste residue
f-CaO
