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Preparation method of glass ball for vitrification of radioactive waste, product and application thereof

A technology for radioactive waste and glass balls, which is used in radioactive purification, nuclear engineering, etc., to prevent blockage, improve efficiency, and meet the effects of unpowered feed delivery.

Pending Publication Date: 2022-03-11
浙江乾江源环境科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is not suitable for the production of glass spheres with a diameter < 5 mm

Method used

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  • Preparation method of glass ball for vitrification of radioactive waste, product and application thereof
  • Preparation method of glass ball for vitrification of radioactive waste, product and application thereof
  • Preparation method of glass ball for vitrification of radioactive waste, product and application thereof

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Effect test

preparation example Construction

[0045] Preparation method of glass spheres of radioactive waste glass, including the following steps: fuse, double roller mold, knocking crushed, wrap, granular grade, grinding circle and acid polishing step.

[0046] Specific steps are as follows:

Embodiment 1

[0048] 1. Fuse:

[0049] Put the ingredients from the feed port 1 to the electric kiln (see figure 1The glass liquid 6 is flowed out by the coke heat of the main molten electrode 2, and the glass liquid 6 is flowed from the discharge port 4 of the wavy feeder 3; the glass liquid 6 is observed, requiring the sample under the optical microscope, no visible bubble, no melery, No separation or devital phenomenon;

[0050] 2. Double Roll Mold Forming:

[0051] The fused glass liquid 6 is continuously flowed between the relative rotating double roller mold 7 by the feed channel discharge port 4 (see Figure 4 ), The double roller mold 7 has at least one roller having a single row or a plurality of concave pits; the glass-shaped concave pit; the glass liquid is passed closely to the opposite rotation of the double roller mold 7. In the numerous concave pit of the mold, the viscous liquid is converted to a plastic, and then transformed into a blank having a fixed shape (see Figure 4 , Figu...

Embodiment 2

[0059] Based on the first embodiment, in step 1, the wavy feed channel 3 refers to a channel of the cross-sectional shape is hollow, and the different cross-sectional position is set or / and several incompletely divided baffles in the longitudinal direction. 5; the glass liquid 6 flows through the baffle 5 of different angles to be disturbed, and the flow direction and speed are changed several times to avoid layering;

[0060] The cross-sectional shape of the wavy feed channel 3 can select a rectangle (see figure 2 ) Or / and circle (see image 3 ), Use refractory brickwork (brick gap with refractory mud filling) or refractory pouring overall molding, reducing the high temperature volatilization of volatile components by full sealing;

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Abstract

The invention belongs to the technical field of radioactive waste disposal, and particularly relates to a preparation method of a glass ball for vitrification of radioactive waste, a product and application of the product, a glass base material is specially made into a ball shape, an edge grinding machine is beaten, and the spheroidizing efficiency is improved; volatilization of elements such as boron in high-temperature melting ingredients is reduced, and the stability of glass ball components can be improved, so that the performance of a glass solidified body is improved; molten glass flows through the baffles at different angles and is interfered, and the flowing direction and speed of the molten glass are changed for multiple times to avoid layering; in the beating and edge grinding process, air is blown out from a plurality of air outlets in the screen, so that the flowing and collision probability of blank particles is increased, and on the other hand, the temperature rise caused by friction of the blank particles and the like is also reduced; and by adopting a fine grinding and / or acid polishing process, the glass ball is smooth in appearance and has strong glass luster.

Description

Technical field [0001] The present invention belongs to the technical field of radioactive waste disposal, and the preparation method, product and its application thereof are related to radioactive waste glass. Background technique [0002] Nuclear industry, the operation of nuclear power plants must produce a certain amount of radioactive waste, if there is no security disposal, they will threaten human survival; can convert radioactive waste into a stable cured body with a curable substrate to stabilize Entering the metal container, embedding underground nuclear waste storage library to prevent radioactivity migration, leak, this deep geological disposal is currently an internationally accepted program. Since the 1950s, a variety of cured substrates have been studied, such as a cured body such as substrates such as cement, asphalt, polymer, glass, artificial rock and radioactive waste. [0003] Compared to cement, bitumen, polymer, etc., together with a glass substrate and radi...

Claims

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Application Information

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IPC IPC(8): G21F9/30
CPCG21F9/305
Inventor 程俊华赵国祥
Owner 浙江乾江源环境科技有限公司
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