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1. 发明授权

US08956424B2 Method and apparatus for sequencing-batch purification of potassium nitrate from solid waste produced by glass-strengthening process 有权
标题翻译：用于通过玻璃强化过程产生的固体废物对硝酸钾进行批量纯化的方法和装置
公开(公告)号：US08956424B2
公开(公告)日：2015-02-17
申请号：US13743837
申请日：2013-01-17
申请人： National Formosa University
发明人： Min-Hui Yang
IPC分类号： C01D9/16
CPC分类号： C01D9/16
摘要： Provided is a method and an apparatus for purifying potassium nitrate from the solid waste produced by a chemical glass-strengthening process. In the method, the solid waste is melted into a liquid waste at first. Potassium nitrate of various purity grades can be obtained by batch processing the liquid waste through stepwise cooling processes of cooling the liquid waste to a first temperature facilitating the potassium nitrate contained in the liquid waste to be crystallized at a first rate and then cooling the liquid waste to a second temperature close to the freezing point of the potassium nitrate at a second rate that is slower than the first rate. The recovered potassium nitrate from the solid waste can be recycled and reused.
摘要翻译：本发明提供一种通过化学玻璃强化工艺制备的固体废物中的硝酸钾的净化方法和装置。在该方法中，首先将固体废物熔化成废液。可以通过将液体废物冷却到第一温度的逐步冷却方法将液体废物分批处理成第一温度，从而使废液中所含的硝酸钾以第一速率结晶，然后冷却液体废物，从而获得各种纯度等级的硝酸钾以比第一速率慢的第二速率接近硝酸钾的冰点的第二温度。来自固体废物的回收的硝酸钾可以回收再利用。

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