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Rare earth extraction system and method for rare earth three-color phosphor powder wastewater for lamps

The technology of an extraction system and extraction method is applied in the rare earth extraction system field of rare earth three-color fluorescent powder wastewater for lamps, which can solve the problems of low product purity and inability to completely remove impurity elements, and achieve simple process flow, less product loss, and The effect of reducing pollution

Active Publication Date: 2020-06-09
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Existing shortcomings or deficiencies: Only by precipitation method to extract rare earth elements, impurity elements cannot be completely removed, resulting in low product purity

Method used

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  • Rare earth extraction system and method for rare earth three-color phosphor powder wastewater for lamps
  • Rare earth extraction system and method for rare earth three-color phosphor powder wastewater for lamps
  • Rare earth extraction system and method for rare earth three-color phosphor powder wastewater for lamps

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Embodiment 1

[0041] Such as Figure 1-7 As shown, the rare earth extraction system of a kind of rare earth tricolor fluorescent powder wastewater for lamps provided in this embodiment includes:

[0042] Waste water collection box 1, described waste water collection box 1 comprises the box body 1-2 of single side opening 1-1 and the cover body 1-3 that is used to seal the opening 1-1 of this box body 1-2; The inner cavity of -2 is provided with a partition 1-4, the partition 1-4 extends vertically from the surface of the cover 1-3 to the opposite side of the opening of the box 1-2, and then bends and extends to the box 1-2 The top surface of the box body 1-2 is divided into an upper sealed chamber 1-5 and a lower flow chamber 1-6 by a partition 1-4; a first filter screen is provided in the lower flow chamber 1-6 1-7 and the second filter screen plate 1-8, both of which are arranged successively on the flow path of the water flow, the first filter screen plate 1-7 extends vertically from th...

Embodiment 2

[0059] The rare earth extraction system of a kind of rare earth three-color fluorescent powder wastewater for lamps provided in this embodiment has the same general structure as that of Embodiment 1, but after a long time of use, in order to facilitate the removal of the rare earth accumulated on the first filter plate 1 Precipitated impurities between -7 and the second filter screen plate 1-8. Such as Figure 8 As shown, in the present embodiment, a waste material discharge pipe 1-15 is provided on the bottom surface of the box body 1-2, and the nozzle of the waste material discharge pipe 1-15 is located between the first filter screen plate 1-7 and the The lower flow chamber 1-6 between the inclined plates 1-9 is partly connected; a plug 1-16 for sealing the waste discharge pipe 1-15 is provided in the waste discharge pipe 1-15.

Embodiment 3

[0061] The rare earth extraction system of a kind of rare earth three-color fluorescent powder wastewater for lamps provided in this embodiment, its general structure is consistent with embodiment 2, such as Figure 9 Shown, but the rare earth extraction system of a kind of rare earth three-color fluorescent powder wastewater for lamps provided in this embodiment also includes the first waste water tank 4-6 for collecting the waste water of the adsorption device 4, the first waste water tank 4-6 The waste water tank 4-6 is equipped with a water quality detection system 4-5 for detecting the water quality of the waste water in the first waste water tank 4-6, and the waste water can be discharged directly after being tested up to the standard.

[0062] What the above-mentioned water quality detection system 4-5 adopts is the ultraviolet water quality detection technology.

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Abstract

The invention discloses a system for extracting rare earth from wastewater of phosphors, and particularly relates to a system for extracting rare earth from wastewater of rare earth trichromatic phosphors for lamps. The system for extracting the rare earth from the wastewater of the rare earth trichromatic phosphors for the lamps comprises a wastewater collecting tank, a pretreatment tank, a reaction tank, an adsorption device and an incineration device. Meanwhile, the invention further provides a method for extracting the rare earth from the wastewater of the rare earth trichromatic phosphorsfor the lamps. The system and method for extracting the rare earth from the wastewater of the rare earth trichromatic phosphors for the lamps solve the technical problems of ''improving the extraction purity and recovery rate of the rare earth from the wastewater of the rare earth trichromatic phosphors for the lamps''. The two separation and purification method is adopted to improve the recoveryrate of rare earth elements, the wastewater is discharged up to the standard, technological steps are shortened, and environmental pollution is reduced.

Description

technical field [0001] The invention relates to a rare earth extraction system and method for fluorescent powder wastewater, in particular to a rare earth extraction system and method for lamp-used rare earth three-color fluorescent powder wastewater. Background technique [0002] In recent years, rare-earth three-primary-color phosphors have taken an irreplaceable position in luminescent materials due to their good luminescence performance and stable physical properties. Rare-earth three-primary-color phosphors are characterized by narrow emission bands and more concentrated luminous energy It has high stability under short-wave ultraviolet excitation and good high-temperature characteristics, and is more suitable for high-load thin-tube fluorescent lamps and various single-ended compact fluorescent lamps. However, the wastewater generated during the phosphor powder preparation process contains rare earth ions, and if it is discharged randomly without treatment, it will pol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B59/00C02F9/00
CPCC02F1/001C02F1/281C02F1/44C02F1/58C02F1/66C02F9/00C02F2001/007C22B7/006C22B59/00Y02P10/20
Inventor 张芳佳胡宁洋江玲玲刘帅帅许玲霞方荧
Owner SHAOXING UNIVERSITY