Dynamic variations in salinity and potassium grade of a potassium-rich brine deposit in Lop Nor basin, China

Abstract The Quaternary Lop Nor playa is the largest production base of potassium sulfate in the world. It has a mining history of more than 10 years, and its share in the Chinese potassium sulfate market is about 50% to-date. In this basin, the high-salinity potassium-rich brines are mainly contain...

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Autores principales:	Lichun Ma, Kai Wang, Yu Zhang, Qingfeng Tang, Hui Yan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/03b2cd539bce44e8aa3cc1782a8969e5
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spelling	oai:doaj.org-article:03b2cd539bce44e8aa3cc1782a8969e52021-12-02T12:09:51ZDynamic variations in salinity and potassium grade of a potassium-rich brine deposit in Lop Nor basin, China10.1038/s41598-021-82958-y2045-2322https://doaj.org/article/03b2cd539bce44e8aa3cc1782a8969e52021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82958-yhttps://doaj.org/toc/2045-2322Abstract The Quaternary Lop Nor playa is the largest production base of potassium sulfate in the world. It has a mining history of more than 10 years, and its share in the Chinese potassium sulfate market is about 50% to-date. In this basin, the high-salinity potassium-rich brines are mainly contained in Middle Pleistocene–Holocene glauberite strata. Based on the monitoring of the underground brine table and geochemical analysis, this study reveals variations in the underground brine table and potassium-bearing grade before and after large-scale mining in the Lop Nor potash deposit. The results showed that the underground brine table and potassium sulfate grade decreased by varying degrees over sub-mineral areas after large-scale mining. The underground brine table declined by 8.5 m, on average, in the Luobei depression, by 6.4 m in the Tenglong platform and by 1.9 m in the Xinqing platform. However, the potassium-bearing grade showed the different trend. The Tenglong platform had the largest decline with average decreases in layers W1, W2 and W3 of 18.2%, 13.0% and 24.8%, respectively. In the Xinqing platform, the average decrease in layersW2 and W3 were 17.4% and 16.0% respectively. The Luobei depression decreases were relatively small (W1, W2 and W3 decreased 4.3%, 4.2% and 3.1%, respectively). This research provides a theoretical basis for the rational development and sustainable use of the potassium-rich brines in the Lop Nor basin.Lichun MaKai WangYu ZhangQingfeng TangHui YanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lichun Ma Kai Wang Yu Zhang Qingfeng Tang Hui Yan Dynamic variations in salinity and potassium grade of a potassium-rich brine deposit in Lop Nor basin, China
description	Abstract The Quaternary Lop Nor playa is the largest production base of potassium sulfate in the world. It has a mining history of more than 10 years, and its share in the Chinese potassium sulfate market is about 50% to-date. In this basin, the high-salinity potassium-rich brines are mainly contained in Middle Pleistocene–Holocene glauberite strata. Based on the monitoring of the underground brine table and geochemical analysis, this study reveals variations in the underground brine table and potassium-bearing grade before and after large-scale mining in the Lop Nor potash deposit. The results showed that the underground brine table and potassium sulfate grade decreased by varying degrees over sub-mineral areas after large-scale mining. The underground brine table declined by 8.5 m, on average, in the Luobei depression, by 6.4 m in the Tenglong platform and by 1.9 m in the Xinqing platform. However, the potassium-bearing grade showed the different trend. The Tenglong platform had the largest decline with average decreases in layers W1, W2 and W3 of 18.2%, 13.0% and 24.8%, respectively. In the Xinqing platform, the average decrease in layersW2 and W3 were 17.4% and 16.0% respectively. The Luobei depression decreases were relatively small (W1, W2 and W3 decreased 4.3%, 4.2% and 3.1%, respectively). This research provides a theoretical basis for the rational development and sustainable use of the potassium-rich brines in the Lop Nor basin.
format	article
author	Lichun Ma Kai Wang Yu Zhang Qingfeng Tang Hui Yan
author_facet	Lichun Ma Kai Wang Yu Zhang Qingfeng Tang Hui Yan
author_sort	Lichun Ma
title	Dynamic variations in salinity and potassium grade of a potassium-rich brine deposit in Lop Nor basin, China
title_short	Dynamic variations in salinity and potassium grade of a potassium-rich brine deposit in Lop Nor basin, China
title_full	Dynamic variations in salinity and potassium grade of a potassium-rich brine deposit in Lop Nor basin, China
title_fullStr	Dynamic variations in salinity and potassium grade of a potassium-rich brine deposit in Lop Nor basin, China
title_full_unstemmed	Dynamic variations in salinity and potassium grade of a potassium-rich brine deposit in Lop Nor basin, China
title_sort	dynamic variations in salinity and potassium grade of a potassium-rich brine deposit in lop nor basin, china
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/03b2cd539bce44e8aa3cc1782a8969e5
work_keys_str_mv	AT lichunma dynamicvariationsinsalinityandpotassiumgradeofapotassiumrichbrinedepositinlopnorbasinchina AT kaiwang dynamicvariationsinsalinityandpotassiumgradeofapotassiumrichbrinedepositinlopnorbasinchina AT yuzhang dynamicvariationsinsalinityandpotassiumgradeofapotassiumrichbrinedepositinlopnorbasinchina AT qingfengtang dynamicvariationsinsalinityandpotassiumgradeofapotassiumrichbrinedepositinlopnorbasinchina AT huiyan dynamicvariationsinsalinityandpotassiumgradeofapotassiumrichbrinedepositinlopnorbasinchina
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Dynamic variations in salinity and potassium grade of a potassium-rich brine deposit in Lop Nor basin, China

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