| 我国盐湖钾盐资源现状及提钾工艺技术进展 |
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| 关键词:potassium fertilizers salt lake chemical types of salt lakes technological process |
| 基金项目:中国地质科学院矿产资源研究所基金项目(编号: K1016)；中国地质科学院重点开放实验室专项资金项目(编号: C0903)；中国地质调查局国土资源大调查项目(编号: 1212010011809) |
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| 摘要: |
| Status of Potash Resources in Salt Lakes and Progress in Potash Technologies in China |
| China is a large agricultural country, and there exists a big gap in the utilization of potash fertilizers; nevertheless, China is also a country with numerous salt lakes. Potash resources in salt lakes constitute hopeful conditions for solving China’s shortage of potash fertilizers. Two production bases of potash fertilizers, Qarhan in Qinghai Province and Lop Nur in Xinjiang, have already been established in China, which, however, fail to meet China’s great demand for potash resources. As a result, 70% of the potash consumption remains dependent on import. Therefore, researches on the development of potash products and the establishment of new potash production bases should be further strengthened. Processing technologies of potash from salt lakes of chloride and sulfate subtypes have been developed on the basis of long-term researches and tests. However, potash recovery from salt lakes of the carbonate subtype has just begun. This paper presents the study and analysis of the resources situation and processing procedures for Qarhan and Lop Nur. The experience gained in their successful exploitation can serve as guidance for the exploitation of other salt lakes of the same subtype. A discussion on the possible way of exploiting salt lakes of the carbonate subtype is also made, which demonstrates that potash products from salt lakes of carbonate subtype can be obtained in situ through technological innovation. It is indicated that different technological processes should be employed in the exploitation of different subtypes of salt lakes. |
| NIE Zhen,BU Ling-zhong,LIU Jian-hua,WANG Yun-sheng,ZHENG Mian-ping.2010.Status of Potash Resources in Salt Lakes and Progress in Potash Technologies in China[J].Acta Geoscientica Sinica,31(6):869-874. |
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