Method for calculating mineralization relation of clay mineral object and uranium in sandstone type uranium deposit

A technology of clay minerals and calculation methods, applied in soil material testing, material inspection products, etc., can solve the problems of cumbersome extraction methods, and achieve the effect of realizing qualitative to quantitative, reasonable and feasible purification methods, and avoiding mixing.

Active Publication Date: 2014-07-30
BEIJING RES INST OF URANIUM GEOLOGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Due to the cumbersome industrial extraction methods, previous studies on the adsorption an

Method used

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  • Method for calculating mineralization relation of clay mineral object and uranium in sandstone type uranium deposit
  • Method for calculating mineralization relation of clay mineral object and uranium in sandstone type uranium deposit

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, including the following steps:

[0038] Step 1: Select core samples with the oxidation zone, transition zone, and reduction zone of the interlayer oxidation zone sandstone-type uranium deposit as different subzones, and calculate the core sample quality of the three subzones as Q 1 , Q 2 , Q 3 , Calculate the uranium content of the core samples of the three subzones as U 1 , U 2 , U 3 ;

[0039] Step 2: Separate and purify the clay minerals in the three subzone core samples, and calculate the quality 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 content of the clay minerals in the three subzone core samples as BU 1 , BU 2 , BU 3 ; Calculate the uranium content U of the core samples of the thre...

Embodiment 2

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

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

[0049] Step 5.2: Perform adsorption reaction experiments of typical mineral standard samples in uranyl nitrate solutions with different initial concentrations, and compare the adsorption rates of the same clay mineral type under different initial solution concentrations.

[0050] Step 5.3, under the conditions of the same pH value and initial solution concentration, use different types of typical mineral standards to conduct adsorption reaction experiments on uranium hexa...

Embodiment 3

[0053] On the basis of Example 1 or Example 2, for the purification of clay minerals in step 2, the freezing temperature method can be used, which specifically includes:

[0054] Step 2.1, crush the core sample into small pieces, wash off the powder adsorbed on the surface of the pieces with deionized water, soak the core sample with deionized water, seal it and put it in the freezing-thawing device;

[0055] Step 2.2, repeatedly freeze-thaw the broken sample;

[0056] Step 2.3, processing of chemical samples of samples;

[0057] (1) Remove carbonate and replaceable calcium and magnesium ions.

[0058] (2) Remove iron oxide and iron hydroxide;

[0059] (3) Remove silica;

[0060] Step 2.4, wash off Cl - , Mg 2+ , Ca 2+ , HCl;

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

[0062] Step 2.6, use sedimentation siphon method, centrifugal separation method and microporous membrane filtration method...

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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 specifically relates to a method for calculating the relationship between clay minerals and uranium mineralization in a sandstone-type uranium deposit. Background technique [0002] Clay minerals in sandstone-type uranium deposits are closely related to the precipitation and enrichment of uranium. The main types of clay minerals are kaolinite, montmorillonite, illite and some mixed layers of Imonite. Due to the cumbersome industrial extraction methods, there are few studies on the adsorption and enrichment of uranium by clay minerals, and most of them are qualitative studies. Summary of the invention [0003] The purpose of the present invention is to quantitatively analyze the relationship between clay minerals and uranium mineralization in sandstone-type uranium deposits, and to provide a method for calculating the relationship between clay minerals and uranium mineralization in sandstone-type ur...

Claims

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Application Information

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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
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