发明公开
EP3151929A1 STABILIZATION OF AT LEAST ONE HEAVY METAL CONTAINED IN A SODIC FLY ASH USING A WATER-SOLUBLE SOURCE OF SILICATE AND A MATERIAL CONTAINING CALCIUM AND/OR MAGNESIUM
审中-公开
基本信息:
- 专利标题： STABILIZATION OF AT LEAST ONE HEAVY METAL CONTAINED IN A SODIC FLY ASH USING A WATER-SOLUBLE SOURCE OF SILICATE AND A MATERIAL CONTAINING CALCIUM AND/OR MAGNESIUM
- 专利标题（中）：至少一种重金属和钠飞灰稳定化二氧化硅含量水溶性源和钙和/或含镁的材料制成
- 申请号：EP15730002.1 申请日：2015-06-03
- 公开(公告)号：EP3151929A1 公开(公告)日：2017-04-12
- 发明人： RAYTHATHA, Rasik H. , SAVARY, David Jean Lucien
- 申请人： SOLVAY SA
- 申请人地址： Rue de Ransbeek, 310 1120 Bruxelles BE
- 专利权人： SOLVAY SA
- 当前专利权人： SOLVAY SA
- 当前专利权人地址： Rue de Ransbeek, 310 1120 Bruxelles BE
- 代理机构： Vande Gucht, Anne
- 优先权： US201462007922P 20140604; US201462029418P 20140725
- 国际公布： WO2015187778 20151210
- 主分类号： A62D3/33
- IPC分类号： A62D3/33 ; B09B3/00 ; A62D101/24
摘要：
A treatment method for stabilizing at least a portion of at least one heavy metal contained in a sodic fly ash to reduce leachability, wherein the sodic fly ash is provided by a process whereby a sodium-based sorbent is injected in a combustion flue gas to remove pollutants therefrom. The treatment method comprises contacting the sodic fly ash with at least one water-soluble source of silicate and at least one additive comprising calcium and/or magnesium. The material obtained from the contacting step is preferably dried. The additive may be selected from the group consisting of lime kiln dust, fine limestone, quicklime, hydrated lime, dolomitic lime, dolomite, selectively calcined dolomite, hydrated dolomite, magnesium hydroxide, magnesium carbonate, magnesium oxide, and any mixture thereof. A particularly preferred additive comprises lime kiln dust and/or dolomitic lime. The heavy metal to be stabilized in the sodic fly ash may comprise selenium and/or arsenic.
摘要（中）：
用于至少稳定包含在苏打飞灰以减少可浸出，worin的钠质飞灰至少一种重金属的一部分的治疗方法是通过一种方法，其中一个基于钠的吸附剂注入燃烧烟道气以除去提供 污染物有从。 治疗方法包括用硅酸盐中的至少一种水溶性源和至少一种添加剂，其包含钙和/或镁接触的含钠的飞灰。 从接触步骤中获得的材料优选被干燥。 该添加剂可以选自的石灰窑粉尘，细石灰石，生石灰，熟石灰，白云石石灰，白云石被选择，选择性煅烧白云石，水合白云石，氢氧化镁，碳酸镁，氧化镁，以及它们的任何混合物。 特别优选的添加剂包括石灰窑粉尘和/或白云石石灰。 在含钠的飞灰被稳定重金属可包括硒和/或砷。