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A method for preparing environmentally friendly optical materials by using rare earth hyper-enriched plants

A technology for hyper-accumulation of plants and optical materials is applied in the field of preparation of environmentally friendly optical materials, which can solve the problems of secondary pollution, waste of rare earth metals or heavy metal resources, etc., and achieve the effects of high recovery efficiency, favorable recycling and high-quality optical properties.

Active Publication Date: 2022-03-15
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects and deficiencies in the prior art that are likely to cause secondary pollution, waste of rare earth metal or heavy metal resources in the treatment of hyperaccumulator plants, and provide a safe and efficient treatment of hyperaccumulator plants, A method that does not produce secondary pollution and fully utilizes rare earth or heavy metal resources in hyperaccumulator plants, specifically to provide a method for preparing environmentally friendly optical materials using rare earth hyperaccumulator plants

Method used

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  • A method for preparing environmentally friendly optical materials by using rare earth hyper-enriched plants
  • A method for preparing environmentally friendly optical materials by using rare earth hyper-enriched plants
  • A method for preparing environmentally friendly optical materials by using rare earth hyper-enriched plants

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Effect test

Embodiment 1

[0040] Example 1 A kind of recycling and preparation of environmentally friendly optical materials rare earth doped LiAl by using rare earth hyperaccumulation plant Osmanthus osmanthus 5 o 8 Methods

[0041] The method comprises the steps of:

[0042] S1. Drying the rare earth super-enriched Osmanthus plants, and placing the dried plants in a shearing crusher for crushing to obtain uniform Osmanthus powder; weighing 40g Osmanthus powder in vacuum pyrolysis and condensing in stages The device performs pyrolysis and condensation treatment: set the vacuum degree of the first section of pyrolysis area to 10Pa, the final temperature of pyrolysis to 700°C, the heating rate to 30°C / min, and the retention time to 30min; set the condensation temperature of the second section of condensation area to 180°C, the condensation temperature in the third condensation area is 80°C;

[0043]S2. After the pyrolysis is complete, a total of 27.666g of pyrolysis oil and pyrolysis gas are collecte...

Embodiment 2

[0049] Example 2 A rare-earth-doped LiAl prepared by recycling rare-earth hyperaccumulator plant pokeweed to prepare an environmentally friendly optical material 5 o 8 Methods

[0050] The method comprises the steps of:

[0051] S1. Dry the rare earth super-enriched pokeweed plants, and put the dried plants into a shear crusher to crush them to obtain uniform pokeweed powder; weigh 40g of pokeweed powder and perform vacuum pyrolysis Pyrolysis and condensation treatment of subsection condensation device: set the vacuum degree of the first section of pyrolysis area to 50Pa, the final temperature of pyrolysis to 600°C, the heating rate to 25°C / min, and the retention time to 30min; set the vacuum degree of the second section of condensation area to The condensation temperature is 160°C, and the condensation temperature in the third condensation area is 70°C;

[0052] S2. After the pyrolysis is complete, a total of 35.47g of pyrolysis oil and pyrolysis gas are collected. Using G...

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Abstract

The invention belongs to the technical field of solid waste recycling, and in particular relates to a method for preparing environment-friendly optical materials by utilizing rare earth hyperaccumulator plants. In this method, rare earth hyperaccumulator plants are dried and pulverized, followed by vacuum thermal decomposition and condensation, and high-temperature solid-state reaction to obtain the optical material; the full resource and high-value utilization of rare earth hyperaccumulator plants is realized, and the solution Solved the problems of high cost of phytoremediation in rare earth polluted areas and secondary pollution of the environment; prepared rare earth doped LiAl 5 o 8 Environmentally friendly optical materials and LiAl 5 o 8 Compared with the matrix optical material, it has better optical properties and can be further applied to the preparation of light-emitting diodes.

Description

technical field [0001] The invention belongs to the technical field of solid waste recycling. More specifically, it relates to a method for preparing environmentally friendly optical materials using rare earth hyperaccumulator plants. Background technique [0002] my country is the country with the largest reserves of rare earths. As a strategic resource, rare earths are widely used in military, metallurgy, petrochemical and other fields, and have very high application value. However, in the process of rare earth mining, most of them have not properly protected and managed the environment, and the ecology of the surrounding areas of rare earth producing areas has been seriously damaged, which has seriously affected the health of nearby residents. In order to improve the ecological environment of rare earth pollution, researchers have developed many methods to control rare earth pollution. Among them, phytoremediation is widely used in the treatment of rare earth pollution b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/64C01F7/043
CPCC01F7/043C09K11/7706C01P2006/60
Inventor 阮菊俊邱锐军秦保家黄哲汤叶涛仇荣亮
Owner SUN YAT SEN UNIV
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