| 发明名称 | Method and composition for sequestration of arsenic | ||
| 摘要 | A method for sequestrating arsenic oxides, comprising forming an insoluble and stable glass incorporating a fully oxidized form of arsenic generated by oxidation of an initial lower oxide of arsenic and stabilization by calcium salt formation. The glass composition for sequestration of arsenic comprises from 50 to 75% silica; from 0.5 to 3% Al2O3; from 1 to 15% MnO; from 5 to 15% CaO; from 1 to 20% As2O5 and from 8 to 14% Na2O, less than four percent of iron oxides, magnesium oxide and other oxides. | ||
| 申请公布号 | US8998790(B2) | 申请公布日期 | 2015.04.07 |
| 申请号 | US201314017578 | 申请日期 | 2013.09.04 |
| 申请人 | Dundee, Technologies Durables Inc. | 发明人 | Lalancette Jean-Marc;Dubreuil Bertrand;Lemieux David |
| 分类号 | B09B1/00;B09B3/00;C03C3/087 | 主分类号 | B09B1/00 |
| 代理机构 | Schwegman Lundberg & Woessner, P.A. | 代理人 | Schwegman Lundberg & Woessner, P.A. |
| 主权项 | 1. A method for sequestrating arsenic oxides, comprising forming an insoluble and stable glass by mixing an initial lower oxide of arsenic with one of: i) glass-forming elements and ii) recycled glass; adding an oxidizing agent, for oxidizing the initial lower oxide of arsenic into a fully oxidized form of arsenic, and at least one of: i) calcium oxide and ii) calcium hydroxide for stabilization of arsenic by calcium salt formation; and a heating cycle. | ||
| 地址 | CA | ||