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Descaling agent and application thereof

A technology of descaling agent and mass ratio, applied in the direction of chemical instruments and methods, drilling compositions, etc.

Pending Publication Date: 2021-02-26
EAST CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Up to now, there has not been an effective and targeted solution to the problem of scale blockage in the production process of in-situ leaching uranium mining. Scaling agent is of great significance to ensure the quality and production capacity of uranium products, improve the technical level of in-situ leaching uranium mining, and comprehensively expand the cut-off grade of in-situ leaching uranium mining

Method used

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  • Descaling agent and application thereof
  • Descaling agent and application thereof
  • Descaling agent and application thereof

Examples

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preparation example Construction

[0030] The present invention does not have any special limitation on the preparation method of the descaling agent, and the physical mixing process well known to those skilled in the art can be used for mixing.

[0031] The present invention also provides the application of the descaling agent described in the above technical solution in removing the scale produced by leaching uranium mining.

[0032] In the present invention, the in-situ leaching uranium is preferably CO 2 +O 2 In-situ leaching for uranium mining.

[0033] In the present invention, the descaling agent is preferably descaling in the form of a descaling agent solution;

[0034] The mass concentration of the detergent solution is preferably 1-2%, more preferably 1.5%.

[0035]In the present invention, the composition of the scale preferably includes one or more of calcium and magnesium carbonate, silicon dioxide and organic silicon.

[0036] In the present invention, the volume ratio of the mass of the scale...

Embodiment 1～7

[0040] HClO in descaling agent 4 , EDTA and NaF+HNO 3 The quality ratio is shown in Table 1:

[0041] HClO in the descaling agent described in table 1 embodiment 1~7 4 , EDTA and NaF+HNO 3 mass ratio

[0042] Example HClO 4 , EDTA and NaF+HNO 3 mass ratio

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Abstract

The invention relates to the technical field of descaling, in particular to a descaling agent and application thereof. HClO4 in the descaling agent provided by the invention can oxidize organic matters, so that organic matter macromolecules are degraded into micromolecules, and metal elements in a metal organic complex in scales are released at the same time; meanwhile, the EDTA can form a complexwith metal ions in scales and is dissolved in water; the NaF+HNO3 can dissolve Si-containing crystal substances such as SiO2 in scale substances, wherein the NaF can play a role in dissolving the silicon-containing crystal substances only in the presence of the HNO3, so that a problem that an ore bed is seriously damaged due to the fact that HF is directly used for dissolving the silicon-containing crystal substances is avoided, wherein the composite system is more gentle than a system only using HF.

Description

technical field [0001] The invention relates to the technical field of descaling, in particular to a descaling agent and its application. Background technique [0002] In-situ leaching uranium mining is a uranium mining method that selectively dissolves uranium ore through chemical reactions between leaching agents and minerals under natural burial conditions without causing displacement of the ore. Yining Uranium Mine in Xinjiang, Inner Mongolia Uranium Mine, Highland Uranium Mine in the United States, and ChuSarysu Uranium Mine in Kazakhstan are large-scale, advanced technology, high degree of automation, and good economic benefits. However, with the progress of uranium mining process, The newly injected leaching solution contacts with groundwater and impurities in the ore layer to produce precipitation, resulting in the decrease of the permeability of the ore layer, blockage of the injection well, resin poisoning and other problems, which directly affect the output and qu...

Claims

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Application Information

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IPC IPC(8): C09K8/524C09K8/528
CPCC09K8/524C09K8/528
Inventor 蔡佳玲冯佳慧冯宇李爽胡艳琴刘付平李嘉辉刘伟刚孔杰吴奇张峰张子敏余豪奇熊有恒何非凡吴勇进花榕陈焕文刘云海柳和生
Owner EAST CHINA UNIV OF TECH
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