PROCESS FOR THE TREATMENT OF SOLID ALKALINE RESIDUE COMPRISING CALCIUM, HEAVY METALS AND SULPHATE,申请号HK20160103754-传众专利搜索

PROCESS FOR THE TREATMENT OF SOLID ALKALINE RESIDUE COMPRISING CALCIUM, HEAVY METALS AND SULPHATE

申请公布号：HK1215800(A1)

申请号：HK20160103754

申请日期：2016.04.01

申请公布日期：2016.09.15

申请人：

Tauw B.V.

发明人：Jaap STEKETEE

分类号：B09B;C01F;C04B

主分类号：B09B

摘要：The invention relates to a process for the treatment of solid alkaline residue comprising calcium, heavy metals and sulphate, the process comprising: a)reacting the solid alkaline residue with carbon dioxide by contacting the solid alkaline residue with a carbon dioxide containing gas to obtain carbonated solid material; and c)washing the carbonated solid material with an aqueous stream to obtain washed solid material and wash water comprising calcium and sulphate and precipitating at least part of the calcium in the wash water as calcium carbonate.