Preparation method of radioactive waste magmatite glass ceramic solidified body

A technology for radioactive waste and glass ceramics, which is used in the preparation of radioactive waste magmatic rock glass ceramic solidified bodies and the field of radioactive waste solidification treatment, can solve problems such as no radioactive waste preparation methods, and achieves low crushing value and compression resistance. Strong and anti-corrosion effect

Inactive Publication Date: 2020-02-28
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, the solidification systems of radioactive waste glass ceramics at home and abroad include the formation of pyrochlore crystal phase system in borosilicate glass or lead silicate glass, and the precipitation of perovskite zircon crystal phase system in aluminoborosilicate glass. etc., but there is no literature report on the preparation method of radioactive waste magma rock glass ceramic solidified body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing radioactive waste magma rock glass-ceramic solidified body, comprising the following steps:

[0031] a. Ingredients: 27.6g of natural magmatic rock as raw material, simulated radioactive waste ZrO 2 The proportion of 2.4g is taken from natural magmatic rock and simulated radioactive waste;

[0032] The main chemical composition and the mass percent example of described raw material natural magmatic rock are: SiO 2 50.71%, A1 2 o 3 13.41%, CaO 9.86%, MgO 4.34%, Fe 2 o 3 +FeO13.09%, Na 2 O 2.42%, K 2 O 1.26%, TiO 2 1.93%, the rest 2.98% (mainly a small amount of Mn, P, S, Ba, Sr, Zr, Cu, Zn, Nb, Rb, Y, Pr, La, Li, Ni, Lu, Mo, Nd, Sc, Ta , Tb, W, Th, U, Tm, etc., ten or more compounds); the mineral composition of raw natural magmatic rocks is mainly composed of basic feldspar and pyroxene;

[0033] b. Mixing: mix and grind the natural magmatic rock and the simulated radioactive waste (or grinding, which can be done with a ball mill) to make...

Embodiment 2

[0039] A method for preparing radioactive waste magma rock glass-ceramic solidified body, comprising the following steps:

[0040] a. Ingredients: 13.2g natural magmatic rock as raw material, simulated radioactive waste ZrO 2 The proportion of 16.8g is taken from natural magmatic rock and simulated radioactive waste;

[0041] The main chemical composition and the mass percent example of described raw material natural magmatic rock are: SiO 2 50.71%, A1 2 o 3 13.41%, CaO 9.86%, MgO 4.34%, Fe 2 o 3 +FeO13.09%, Na 2 O 2.42%, K 2 O 1.26%, TiO 2 1.93%, the rest 2.98% (mainly a small amount of Mn, P, S, Ba, Sr, Zr, Cu, Zn, Nb, Rb, Y, Pr, La, Li, Ni, Lu, Mo, Nd, Sc, Ta , Tb, W, Th, U, Tm, etc., ten or more compounds); the mineral composition of raw natural magmatic rocks is mainly composed of basic feldspar and pyroxene;

[0042] b. Mixing: mix and grind the natural magmatic rock and the simulated radioactive waste (or grinding, which can be done with a ball mill) to make a...

Embodiment 3

[0048] A method for preparing radioactive waste magma rock glass-ceramic solidified body, comprising the following steps:

[0049] a. Ingredients: 22.2g natural magmatic rock as raw material, simulated radioactive waste ZrO 2 The proportion of 7.8g is taken from natural magmatic rock and simulated radioactive waste;

[0050] The main chemical composition and the mass percent example of described raw material natural magmatic rock are: SiO 2 50.71%, A1 2 o 3 13.41%, CaO 9.86%, MgO 4.34%, Fe 2 o 3 +FeO13.09%, Na 2 O 2.42%, K 2 O 1.26%, TiO 2 1.93%, the rest 2.98% (mainly a small amount of Mn, P, S, Ba, Sr, Zr, Cu, Zn, Nb, Rb, Y, Pr, La, Li, Ni, Lu, Mo, Nd, Sc, Ta , Tb, W, Th, U, Tm, etc., ten or more compounds); the mineral composition of raw natural magmatic rocks is mainly composed of basic feldspar and pyroxene;

[0051] b. Mixing: mix and grind the natural magmatic rock and the simulated radioactive waste (or grinding, which can be done with a ball mill) to make a ...

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Abstract

The invention discloses a preparation method of a radioactive waste magmatite glass ceramic solidified body. The preparation method is characterized by comprising the following steps: taking the following raw materials in percentage by mass: 44-99% of natural magmatite and 1-56% of simulated radioactive waste which is ZrO2, CeO2 or La2O3; mixing and grinding; heating an obtained mixed material at1400-1500 DEG C for 3-4.5 hours to obtain a melt; cooling the melt to 730-1250 DEG C, and keeping the temperature for 2-3 hours to obtain a magmatite glass ceramic solidified body; and keeping the temperature at 600 DEG C for 1-2 hours, and cooling to room temperature to obtain the radioactive waste magmatite glass ceramic solidified body. The prepared radioactive waste magmatite glass ceramic solidified body is good in chemical stability and thermal stability, the mechanical stability and the radioactive waste package capacity are superior to those of glass solidified bodies, the simulated radioactive waste element weightlessness rate is small, and practicability is high.

Description

technical field [0001] The invention belongs to the treatment and disposal of radioactive waste, and relates to a preparation method of radioactive waste magma rock glass ceramic solidification body, which is especially suitable for solidification treatment of radioactive waste discharged in the nuclear industry and other fields. Background technique [0002] A large amount of radioactive waste will be produced in the process of nuclear energy utilization, which contains a large number of actinides and fission elements with long half-life, high toxicity and high radioactivity. [0003] At present, the solidification treatment of radioactive waste mainly includes vitrification, ceramic solidification, and glass-ceramic solidification. Vitrification has the characteristics of large composition adjustment, simple process, and convenient remote operation. It can "one-time" solidify all components in radioactive waste. It is a relatively mature solidification method in engineerin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03C6/00G21F9/16G21F9/30C03B32/02
CPCC03B32/02C03C1/00C03C1/002C03C10/00C03C10/0063G21F9/162G21F9/302
Inventor 霍泳霖霍冀川张行泉
Owner SOUTHWEAT UNIV OF SCI & TECH
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