| 地下浓缩海水苦卤中提取超高纯镁砂方法的研究 |
| |
| 引用本文： | 徐丽君,周仲怀,刘兴俊.地下浓缩海水苦卤中提取超高纯镁砂方法的研究[J].海洋与湖沼,1992,23(1):109-113. |
| |
| 作者姓名： | 徐丽君 周仲怀 刘兴俊 |
| |
| 作者单位： | 中国科学院海洋研究所，中国科学院海洋研究所，中国科学院海洋研究所 青岛 266071，青岛 266071，青岛 266071 |
| |
| 摘 要： | 本文报道了1986年10月至1989年9月，采用氨沉淀法从莱州湾沿岩地下浓缩海水制盐后的苦卤中提取超高纯镁砂（高温煅烧后的MgO）的方法研究，重点解决了Mg（OH）2的沉降、过滤、降钙去硼及洗涤等问题。研制的超高纯镁砂纯度达到：MgO2，99.95％；CaO2，0．05％；B2O3未检出。
|
| 关 键 词： | 地下浓缩海水 苦卤 超高纯镁砂 提取方法 氨沉淀法 |
STUDY ON THE EXTRACTION METHOD OF THE ULTRAPURE MAGNESIA FROM BITTERN OF THE CONCENTRATED UNDERGROUND SEAWATER |
| |
| Xu Lijun,Zhou Zhonghuai and Liu Xingjun.STUDY ON THE EXTRACTION METHOD OF THE ULTRAPURE MAGNESIA FROM BITTERN OF THE CONCENTRATED UNDERGROUND SEAWATER[J].Oceanologia Et Limnologia Sinica,1992,23(1):109-113. |
| |
| Authors: | Xu Lijun Zhou Zhonghuai and Liu Xingjun |
| |
| Abstract: | Ultrapure magnesia has been obtained from bittern of the concentrated underground sea-water. Its purity is MgO, 99.95%, CaO<0.05%, and B2O3 undetected.When it is precipitated by ammonia method from bittern, we suggest a new preparation method of the ammonia spirit solution, i.e. rhe freshwater is replaced with seawater in process of extraction. It is a very favourable condition for the seashore salt factory.In the process of the extraction of the ultrapure magnesia, the precipitation of magnesia hydroxide need not be washed, and can be directly calcined. Up to date, this technological way of the direct calcination is the simplest, and it is easy and effective.High alkaline solution containing ammonia can be repeatedly used after the precipitation of magnesium hydroxide, so that contents of the fresh water and ammonia spirit can be economized. It may also prevent the effect of the highalkaline solution on the environment, without affecting the extraction of the ultrapure magnesia.The study is new in extraction technology of the ultrapure magnesia. |
| |
| Keywords: | Concentrated underground seawater Bittern Ultrapure magnesia Extraction method |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《海洋与湖沼》浏览原始摘要信息 |
| 点击此处可从《海洋与湖沼》下载免费的PDF全文 |
