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A calculation method for the relationship between clay minerals and uranium mineralization in sandstone-type uranium deposits

A technology of clay minerals and calculation methods, which is applied in soil material testing, material inspection products, etc., can solve problems such as cumbersome extraction methods, and achieve the effects of qualitative to quantitative, high reliability, and avoiding mixing

Active Publication Date: 2016-01-27
BEIJING RES INST OF URANIUM GEOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the cumbersome industrial extraction methods, previous studies on the adsorption and enrichment of uranium by clay minerals are less, and most of them are qualitative studies

Method used

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  • A calculation method for the relationship between clay minerals and uranium mineralization in sandstone-type uranium deposits
  • A calculation method for the relationship between clay minerals and uranium mineralization in sandstone-type uranium deposits

Examples

Experimental program
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Embodiment 1

[0037] A method for calculating the relationship between clay minerals and uranium mineralization in sandstone-type uranium deposits, comprising the following steps:

[0038] Step 1: Take the oxidation zone, transition zone, and reduction zone of the sandstone-type uranium deposit in the interlayer oxidation zone as different subzones to select core samples, and calculate the quality of the core samples for the three subzones as Q 1 , Q 2 , Q 3 , and calculate the uranium content of the core samples of the three subzones as U 1 , U 2 , U 3 ;

[0039] Step 2: Separating and purifying the clay minerals in the three subzone core samples, and calculating the mass of the separated clay minerals as MQ 1 、MQ 2 、MQ 3 ;

[0040] Step 3: Analyze the types, compositions and properties of clay minerals in the three subzone core samples;

[0041] Step 4: Calculate the uranium-containing mass of clay minerals in the three subzone core samples as BU 1 、BU 2 、BU 3 ; Calculate the ...

Embodiment 2

[0047] On the basis of Example 1, the most favorable adsorption conditions can be obtained through the following steps in step 5:

[0048] Step 5.1, according to the type of clay mineral obtained in step 3, select a typical mineral standard sample with the same properties, and carry out the adsorption reaction experiment of the typical mineral standard sample on the hexavalent uranium in uranyl nitrate under different acid-base conditions, and compare the same clay mineral The adsorption rate of the type under different pH conditions.

[0049] In step 5.2, the adsorption reaction experiment of typical mineral standard samples in different initial concentrations of uranyl nitrate solutions was carried out, and the adsorption rate of the same clay mineral type under different initial solution concentrations was compared.

[0050] Step 5.3, under the same pH value and initial solution concentration, use different types of typical mineral standard samples to conduct adsorption rea...

Embodiment 3

[0053] On the basis of embodiment 1 or embodiment 2, for the purification of clay minerals in step 2, freezing temperature method can be adopted, specifically comprising:

[0054] Step 2.1, breaking the rock core sample into small pieces, washing away the powder adsorbed on the surface of the pieces with deionized water, soaking the rock core sample with deionized water, sealing it and putting it into a freezing-thawing device;

[0055] Step 2.2, repeated freezing-thawing crushed samples;

[0056] Step 2.3, the processing of the chemical sample of the sample;

[0057] (1) Removal of carbonate and replacement calcium and magnesium ions.

[0058] (2) remove iron oxide, iron hydroxide;

[0059] (3) remove silicon dioxide;

[0060] Step 2.4, washing away Cl - , Mg 2+ , Ca 2+ , HCl;

[0061] Step 2.5, preparation of suspension: add concentrated ammonium hydroxide dispersant, add deionized water and stir gently, let stand still.

[0062] In step 2.6, the clay minerals of the...

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Abstract

The invention belongs to geology technical field, and more specifically relates to a method for calculating mineralization relation of a clay mineral object and uranium in a sandstone type uranium deposit. A purpose of the method is a quantitative analysis of mineralization relation between the clay mineral object and uranium in the sandstone type uranium deposit. The method comprises the following steps: taking an interlayer oxidation zone, a transition zone and a reducing zone for selecting the samples for different subzones, calculating mass of three samples, uranium-containing mass and proportion; separating and purifying the clay mineral object, and calculating the mass; analyzing types, composition and property of the clay mineral object in three samples; calculating the uranium-containing mass and the uranium-containing proportion; performing an adsorption reaction experiment of the clay mineral object and uranyl nitrate to obtain the most favorable adsorption condition; researching the secondary adsorptivity of the clay mineral object in the sample to uranium under the most favorable adsorption condition; analyzing the adsorptivity difference of a typical mineral standard sample mixture and the clay mineral object in the sample, comparing the area geology background and the most favorable adsorption condition, and determining the enrichment effect of the clay mineral object to uranium.

Description

technical field [0001] The invention belongs to the technical field of geology, and in particular relates to a calculation method for the relationship between clay minerals and uranium mineralization in sandstone-type uranium deposits. Background technique [0002] Clay minerals in sandstone-type uranium deposits are closely related to the precipitation and enrichment of uranium. The types of clay minerals mainly include kaolinite, montmorillonite, illite and some illite-smectite mixed layers. Due to the cumbersome industrial extraction methods, previous studies on the adsorption and enrichment of uranium by clay minerals are few, and most of them are qualitative studies. Contents of the invention [0003] The purpose of the present invention is to quantitatively analyze the relationship between clay minerals and uranium ore-forming in sandstone-type uranium deposits, and provide a calculation method for the relationship between clay minerals and uranium ore-forming in san...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
Inventor 修晓茜张玉燕范洪海刘红旭所世鑫
Owner BEIJING RES INST OF URANIUM GEOLOGY