| Hydro Aluminum Deutschland GmbH Patent applications |
| Patent application number | Title | Published |
|---|
| 20110230377 | Recovery of lubricants from used cooling lubricants - In a method for recovering lubricant or lubricant concentrate from a used mixture containing lubricant, the mixture containing lubricant and which is substantially dewatered is subjected to short path distillation at a temperature of at least 150° C. and a pressure of less than 1.5 mbar, in order to obtain a lubricant concentrate which can be recycled into cooling lubricants and which is free of very finely wear debris, metal soaps and polymers. | 09-22-2011 |
| 20100236543 | Method for the production of an absorber plate for solar collectors - A method for the production of an absorber plate for solar collectors from a strip of metal, in particular of aluminum or an aluminum alloy, includes coating the strip using a coil coating process with a highly selective coating, which has very good absorptive properties for sunlight and ensures very little heat emission. | 09-23-2010 |
