Method for separating metal waste containing 241Am

A separation method and metal waste technology, applied in the direction of process efficiency improvement, photographic process, instrument, etc., can solve the problem of resource waste, achieve the effect of minimizing waste, maximizing resource utilization, and realizing social and economic benefits

Inactive Publication Date: 2020-11-10
广州军力投资发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is obviously a huge waste of resources if a large amount of precious metals are disposed of as radioactive waste

Method used

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  • Method for separating metal waste containing 241Am
  • Method for separating metal waste containing 241Am
  • Method for separating metal waste containing 241Am

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Embodiment Construction

[0020] In view of this, the embodiment of the present invention provides a kind of 241 Am Separation Method of Metal Scrap for Efficient Separation of Containing 241 Am's precious metal scrap.

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] In order to describe the present invention in more detail, below in conjunction with embodiment a kind of containing compound that the present invention provides 241 The separation method of Am metal scrap is described in detail.

[0023] In this embodiment, please refer to Table 1 for the composition of each element in the waste i...

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Abstract

The invention belongs to the technical field of waste metal treatment, and particularly relates to a method for separating metal waste containing 241Am. The invention provides the method for separating the metal waste containing the 241Am. The separation method comprises the steps that 1, dry smelting is carried out; 2, Ag electrolytic refining is carried out; and 3, Au electrolytic refining is carried out. According to the technical scheme provided by the invention, thorough separation of four elements can be realized through treatment, three precious metals in the four elements meet radioactivity decontrol requirements through detection, the radionuclide 241Am exists in the forms of americium metaborate waste residues, concentrated americium salt and the like, and then packaging is performed for treatment and storage. The three precious metals meeting the radioactivity decontrol requirements can be reutilized. After the waste is treated, waste minimization and resource utilization maximization are achieved, social benefits and economic benefits are maximized, and precious metal leftover materials containing the 241Am generated in a source piece manufacturing process are effectively separated.

Description

technical field [0001] The invention belongs to the technical field of waste metal treatment, in particular to a 241 Am method of separation of metal scrap. Background technique [0002] The ion smoke detector is a fire detection device used in buildings and other construction places, and its core component is a 241 The sealed source of Am, commonly known as "source chip", is composed of four elements: Ag, Au, Pd, and Am. 241 Am is sealed in the middle of the silver substrate and the gold-palladium laminated covering layer. [0003] In the production process of "source film", the production process of "cold rolling and punching" is adopted, 241Am is used as the radioactive source, covered with gold-palladium lamination, and pure silver is used as the backing to assist the extension material. After forging and pressing, it is rolled into 0.2 mm thick "source tape". The "source tape" is used as the raw material for the production of the "source sheet", which is punched to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C25C1/20
CPCC22B7/001C25C1/20Y02P10/20
Inventor 赵军廖彤罗旭
Owner 广州军力投资发展有限公司
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