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Method for separating each component in waste residue in crystal industry

A technology of waste residue and crystal, which is applied in the field of separation of components in waste residue in the crystal industry, can solve the problems of a large amount of waste water, no method to provide, and uneconomical, etc., and achieve the effect of low processing cost, simple operation, and high separation purity

Inactive Publication Date: 2012-02-22
JINHUA GUANHUA CRYSTAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the patent CN1456624, the regeneration method of rare earth polishing powder has been reported, wherein it is mentioned that with strong acid and strong alkali, the components except rare earth in the waste residue are reacted and dissolved, so as to purify the rare earth, and for other components in the waste residue Separation does not pay attention, nor does it provide relevant methods, and this method is only aimed at the waste residue generated during the polishing process. The rare earth content in these waste residues is very high, up to 80%, and the content of other components is very small, and it utilizes strong acid The method of alkali reaction removes components other than rare earth. For the waste residue with low rare earth content in the crystal industry, using this method will consume a large amount of strong acid and strong alkali, which is uneconomical, and produces a large amount of waste water, which will bring environmental problems.
[0012] In general, there is no good method for separating the components in the crystal waste residue

Method used

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  • Method for separating each component in waste residue in crystal industry
  • Method for separating each component in waste residue in crystal industry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Take 50Kg crystal waste residue, grind it through a ball mill, and the average particle size of the grinding is 60 microns, and use a pulper to adjust the finely ground waste residue into a slurry with a concentration of 20%. 2 Multiple gravity separations are carried out on a shaker with the same specifications, and the heavy components are collected each time, while the light component slurry is subjected to multiple gravity separations, and the corresponding components are collected. Each component was weighed, measured, tested and sorted: the recovery rate of rare earths was 85.5%, and the purity of rare earths was 95.0%; the purity of lead-containing glass components was 92.1%, and the recovery rate was 86.0%; the purity of light components was 85.3% %.

Embodiment 2

[0043] The gravity separation process is the same as in Example 1, except that the grinding equipment is a rod mill. Each component was weighed, measured, tested and sorted: the recovery rate of rare earths was 83.5%, and the purity of rare earths was 93.2%; the purity of lead-containing glass components was 90.6%, and the recovery rate was 85.8%; the purity of light components was 82.5% %.

Embodiment 3

[0045] The gravitational separation process is the same as in Example 1, except that the average particle size of grinding is controlled at 40 microns. Each component was weighed, measured, tested and sorted: the recovery rate of rare earths was 80.5%, and the purity of rare earths was 96.2%; the purity of lead-containing glass components was 93.0%, and the recovery rate was 83.6%; the purity of light components was 87.5% %.

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Abstract

The invention discloses a method for separating each component in waste residue in the crystal industry, and relates to a method for separating rare earth polishing powder, lead-containing crystal glass and other light components. The method is characterized in that the components are separated by a sorting technology in the mineral separation industrial according to the characteristic that the density of each component is larger in difference. The method comprises the following technical processes of milling crystal waste residue by milling equipment, so that the grain diameter of the waste residue reaches a certain size; mixing the milled waste residue; and repeatedly reelecting and sorting by reselection equipment. Higher-purity components within different density ranges are obtained after separation, so that the heavy component is the high-content rare earth polishing powder component, the intermediate component is the lead-containing crystal glass component, the light component is the inorganic composition which mainly contains the crystal glass, and the separated high-content component can be subsequently and cyclically utilized at a high added value. The method belongs to a physical separation method which is an environment-friendly, high-efficiency and low-cost processing method.

Description

technical field [0001] The invention relates to a method for separating components in crystal industry waste residue, and belongs to the field of environmental protection. Background technique [0002] The crystal industry takes crystal glass (usually high-lead glass) as the initial raw material, and processes it into various shapes of glass products with crystal characteristics through mechanical cutting, grinding, polishing and other means. Crystal glass has the characteristics of high transparency, high gloss, moderate weight, melodious sound, and easy molding and processing. Therefore, crystal glass products have the advantages of beautiful appearance, excellent texture, and affordable price. They are deeply loved by consumers and are widely used in High-end tableware, lighting, decoration, vases, ashtrays, ornaments and other decorations and handicrafts, such as rhinestones, have formed a huge crystal glass manufacturing industry. According to statistics, only in Pujian...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00C03C6/02C03C6/04C09G1/18
Inventor 雷华张序虎张甜甜鲁阳
Owner JINHUA GUANHUA CRYSTAL
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