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A kind of leaching method of active state lithium in soil

An active state and soil technology, applied in the field of mineral resource exploration, can solve the problems of high cost, unfavorable strategic confidentiality of mineral resources, technology monopoly, etc., and achieve the effect of reducing the cost of extraction

Inactive Publication Date: 2020-12-29
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] (1) MMI has been acquired by SGS Commercial Analytical Technology Company. Its extraction agent formula and extraction method are completely confidential. At present, there is no specific information about this method in any public literature. The samples can only be analyzed by the SGS analysis laboratory. It is actually a monopoly in this area of ​​technology
[0011] (2) High cost
[0012] (3) It is not conducive to the strategic secrecy of certain mineral resources in our country

Method used

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  • A kind of leaching method of active state lithium in soil
  • A kind of leaching method of active state lithium in soil
  • A kind of leaching method of active state lithium in soil

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Experimental program
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Effect test

Embodiment 1

[0036] Ganzijika in Sichuan Province is the most important lithium-based rare metal ore field in China. It belongs to the geochemical landscape area of ​​the alpine hilly plateau, and the soil on the surface of the ore body contains a large number of interfering elements. Among them, 15 samples were taken at a certain distance from the surface soil of the No. 804 lithium vein, and the -60 mesh part was sieved, and 0.05-0.3mol / L potassium sulfate leaching agent was added according to a solid-to-liquid ratio of 1:15 (pH was 4-6 ), the sample was put into a constant temperature oscillator and shaken for 24 hours, then taken out and filtered, and the supernatant was measured with an inductively coupled plasma spectrometer for the concentration of lithium therein. Calculate the content of active lithium in the soil sample according to the following formula:

[0037]

[0038] In the formula:

[0039] C—the content of active lithium in the soil sample (mg / kg)

[0040] c—the conc...

Embodiment 2

[0045] Take 33 samples at certain intervals from the surface soil of No. Ⅶ exploration line of X03 super large lithium mine in Ganzi, Sichuan Province, sieve -200 mesh part, add 0.05-0.3mol / L according to the solid-liquid ratio of 1:10 Potassium sulfate leaching agent (pH is 6-8), the sample is put into a constant temperature oscillator and shaken for 24 hours, then taken out and filtered, and the concentration of lithium in the supernatant is measured by an inductively coupled plasma spectrometer. Calculate the content of active lithium in the soil sample according to the following formula:

[0046]

[0047] In the formula:

[0048] C—the content of active lithium in the soil sample (mg / kg)

[0049] c—the concentration of lithium in the filtrate (mg / L)

[0050] v—volume of extractant (ml)

[0051] m—the mass of the soil sample (g)

[0052] see results figure 2 ,same, figure 2 The bottom of the graph is the distribution of the ore body in the stratum, and the upper ...

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Abstract

The invention provides a method for extracting active dynamic lithium in soil. The method comprises the following steps of: 1, acquiring soil to obtain -200 mesh or -60 mesh level soil components forextraction of active dynamic lithium; 2, adding the soil obtained in the step 1 into a potassium sulfate extracting agent according to a solid-to-liquid ratio of 1: 5-1: 15, putting the mixture into aconstant-temperature oscillator after shaking up, and carrying out extraction at a temperature of 20-25 DEG C and a speed of 150-200 r / min for 10-72 hours; 3, enabling the extract liquid to pass a 0,45-micron microfiltration membrane, and measuring a concentration of lithium in the filtrate so as to calculate content of active dynamic lithium in the soil sample; and 4, indicating a latent lithiumore body according to the content of the active dynamic lithium in the soil sample. According to the method, potassium sulfate solution is used for extracting active dynamic lithium in surface soil and geochemical exceptions caused thereby are capable of effectively indicating deep latent lithium ore bodies, so that the method is significant for lithium ore resource exploration of the country; and meanwhile, the method is capable of greatly reducing the active dynamic lithium extraction cost and is simple and convenient to operate.

Description

technical field [0001] The invention relates to the technical field of mineral resource exploration, that is, a deep penetration geochemical prospecting method with active metal extraction as the main means, and in particular to a method for extracting active lithium in soil. Background technique [0002] At present, the exploration of hidden ore bodies is very difficult, and the effect of traditional exploration geochemical methods on finding deeply buried ore bodies is not obvious. To change this situation, it is necessary to develop high-precision, high-sensitivity and high-specificity New methods and new technologies provide new technical means for the search for hidden mines. Deep-penetration geochemistry with active metal extraction as the main means is to study the theory and method of exploration geochemistry that can detect weak direct information from hidden ore bodies in the underground. A breakthrough has been made. [0003] Minerals in the soil are mainly divi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/34G01N21/73
CPCG01N1/34G01N21/73
Inventor 徐志强梁斌耿艳户双节刘婷王秋波
Owner SOUTHWEAT UNIV OF SCI & TECH