Radioactive nuclear waste metal smelting and feeding method

Abstract

The radioactive nuclear waste metal smelting and feeding method is based on the radioactive nuclear waste metal smelting and feeding assembly. A radioactive nuclear waste metal smelting and feeding assembly comprises a total frame, a vertical elevator, a smelting furnace assembly, a trolley assembly, a feeding butt joint mechanism, a negative pressure dust removal mechanism and a material conveying mechanism. The smelting furnace assembly comprises a tipping platform, a smelting furnace and a tipping hydraulic cylinder; the trolley assembly comprises a guide rail and a trolley. The negative-pressure dust removal mechanism comprises an electric push rod A, a connecting frame, a dust collection cover and a negative-pressure dust remover; the material conveying mechanism comprises a support, a belt conveyor A, a lower jacking component and an upper traction assembly. The smelting and feeding steps are as follows: 1, feeding in a cold furnace; 2, metal smelting; the device is applied to the radioactive decontamination process of the nuclear waste metal, the automation degree of the smelting process is improved, operators can be prevented from being subjected to nuclear radiation to a large extent, and necessary support is provided for recycling of the nuclear waste metal.

Description

technical field [0001] The invention relates to the technical field of nuclear waste metal treatment, in particular to a method for smelting and feeding radioactive nuclear waste metal. Background technique [0002] During the operation of nuclear power plants, a large amount of nuclear waste metals will be produced, including waste equipment, pipelines and structural components. According to statistics, a single million-kilowatt unit produces about 4t-5t of nuclear waste metal a year. As of December 2020, my country has 18 nuclear power plants in operation, with a total of 48 reactors, and the cumulative mass of nuclear waste metal produced is about 10,000 tons. The way out of these nuclear waste metals is unknown, and they are currently stored in nuclear power plants. Not only do they have radiation risks and cross-contamination risks, but they are also difficult to collect due to different sizes and specifications, resulting in increasing pressure on nuclear power plants...

AI Technical Summary

Problems solved by technology

[0006] However, the existing smelting system is not suitable for the radioactive decontamination process of nuclear waste metal. The reasons are mainly reflected in the following points: 1. The feeding process is manual feeding, and the metal to be smelted is the premise of nuclear waste metal 2. During the smelting process of nuclear waste metal, radioactive aerosols will be produced, and the volatilization of aerosols will cause inhalation damage to the respiratory system of operators; 3. During the feeding process of the hot furnace, molten steel may splash out from the feeding port of the melting furnace, posing a safety hazard

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