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US 8,048,195 B2Granted
Use of liquid-crystal displays, and processes for the recycling thereof
AssigneeMerck Patent GmbH
InventorRoland Martin
Life of this patent
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Abstract
The present invention relates to the use of liquid-crystal displays (LCDs), and to processes for the recycling thereof. The processes according to the invention are characterised in that the LCDs are employed at least partly as replacement for other raw materials. In general, the LCDs are thermally treated here at a temperature in the range from 900 to 1700° C.
Claims18
A process for the material recycling of LCDs, comprising
- mixing the LCDs with a composition that comprises a mixture of noble and non-noble metals, wherein the proportion of LCDs in the resultant mixture as a whole is 5 to 50% by weight,
- melting the mixture at a temperature range of 900 to 1700° C.,
- cooling the resultant melt,
- breaking the cooled melt, and
- separating a part of the cooled melt that is enriched in the noble metals from the remaining part of the cooled melt.
2 more elements
A process for the material recycling of LCDs, consisting essentially of
- mixing the LCDs with a composition that comprises a mixture of noble and non-noble metals,
- melting the mixture at a temperature range of 900 to 1700° C.,
- cooling the resultant melt,
- breaking the cooled melt, and
- separating a part of the cooled melt that is enriched in the noble metals from the remaining part of the cooled melt.
2 more elements
Dependencies are inferred from the claim text.