| abstract |
The present invention relates to a kind of lignite to utilize method field, and in particular to a kind of method field that multi-function sewage treating agent is prepared using lignite as raw material.The specific steps are by brown coal drying, crush, pickling, alkali carriesï¼›Iron chloride flocculation is added in alkali extract, and the flocculate freeze-drying after separation obtains sewage treating material after calcining.It is not necessary that entire solution is adjusted to acidity after alkali carries, can be recycled.Generate the performance that sewage treating material has high-specific surface area, absorption, Visible Light Induced Photocatalytic and magnetic recovery." compatibility " of production technology is improved, realizes that alkali carries take the not limitation by material composition. |