Geochemical sylvite prospecting method for marine sylvite sedimentary deposits and lixiviation bittern deposits

A geochemical and potassium salt technology, applied in the field of mineral exploration, can solve problems such as unusable geological conditions, and achieve the effect of reliable data

Active Publication Date: 2018-08-03
中化明达控股集团有限公司
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Problems solved by technology

[0005] Xu Xiaosong et al. (currently the more commonly used potassium-seeking indicators in China, 1983; Lin Yaoting, 1995; Cheng Huaide et al., 2008; Zhang Zhaoguang, 2009) only recorded the reference data of potassium-seeking indicators in the literature and could not be used in actual geological conditions

Method used

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  • Geochemical sylvite prospecting method for marine sylvite sedimentary deposits and lixiviation bittern deposits
  • Geochemical sylvite prospecting method for marine sylvite sedimentary deposits and lixiviation bittern deposits
  • Geochemical sylvite prospecting method for marine sylvite sedimentary deposits and lixiviation bittern deposits

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Embodiment 1

[0034] In this method, a total of 12 samples including halite, potassium-bearing halite and potassium salt rock (containing carnallite) from marine sedimentary potassium salt deposits in different regions of the world were selected for dissolution and filtration experiments (Table 2). The samples are mainly selected from the Zechstein potash deposit in Germany, the Saskatchewan potash deposit in Canada, the Vientiane potash deposit in Laos, and the Mengyejing potash deposit in Yunnan, China. In this test, an appropriate amount of sample is first ground to 200 mesh with an agate mortar. In order to facilitate the comparison of natural salt spring brine components, 6g of each sample is dissolved in 100mL of distilled water until the salinity is about 60g / L (considering water insoluble The content of the substance is generally less than 60g / L), and a part of the liquid is acidified and diluted to a certain multiple for detection.

[0035] Br - , Li + , B 2 o 3 etc. are analyz...

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Abstract

The invention provides a geochemical sylvite prospecting method for marine sylvite sedimentary deposits and lixiviation bittern deposits. The method comprises the following steps: 1) selecting a marine-origin deposit, and determining deposition stages of a deposit sample, wherein the deposition stages comprise halilith, potassium-containing halilith and sylvinite; 2) determining the Br/Cl*10<3>,K/Cl*10<3>, a K/Br weight ratio, a nNa/nCl molar concentration ratio and a nMg/nCl molar concentration ratio of the deposit sample; and 3) comparing at least two selected from indexes measured in thestep 2) with sylvite prospecting indexes to determine the mining prospects of the salt deposits. The method provided by the invention adopts the statistical method of verification of ancient depositsbased on ancient geologic process to determine the prospect of sylvite prospecting of marine solid sylvite deposits and marine lixiviation bittern deposits; the method can overcome the problem of insufficient experimental data of modern seawater under isothermal isobaric conditions and fully takes the changes of seawater composition in different geological ages into consideration; and the data obtained by using the method is more reliable and can be more effectively applied to practical work.

Description

technical field [0001] The invention belongs to the field of mineral exploration, and in particular relates to a geochemical potassium salt ore prospecting method for marine potassium salt deposits and leached brine deposits. Background technique [0002] Potassium fertilizer is one of the three major fertilizers in agriculture. The rapid development of my country's agriculture is accompanied by a large demand for potash raw material - potassium salt. At present, the methods of searching for potassium salt deposits in my country include: ①. Surface work; ②. Geophysical methods; ③. Geochemical methods; ④. Drilling methods; ⑤. Remote Sensing Technology. This method is to determine the ore prospecting marks that are beneficial to salt and potassium formation through geochemical methods. In this geological analysis method, the geochemical characteristic coefficient is usually used as the index for potassium search. [0003] Chen Yuhua (The sequence of salt precipitation and t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73
CPCG01N21/73
Inventor 王淑丽郑绵平
Owner 中化明达控股集团有限公司
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