Method for determining the purity of processed waste glass
US5913427A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1997 |
| Grant date | Jun 22, 1999 |
| Priority date | — |
| Expiry date | Aug 5, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S209/93
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for determining the purity of processed waste glass, in which the sample quantity is taken from the processed waste glass stream and is deposited preferably in one layer and is allowed to flow over a free-falling track and the foreign matter according to non-ferrous metals and opaque foreign particles are blown out and weighed according to a separate detection of said groups of foreign matter and for the determination of the quality of the sample the ratios of non-ferrous metal additions to the entire sample quantity and the opaque foreign particles to the entire sample quantity are determined, with said groups of foreign matter being jointly weighed continuously and the weight increases, depending on the group of foreign matter--non-ferrous metals or opaque foreign particles--which was detected immediately prior to the weight increase, being added to this group of foreign matter. In order to allow the determination of the share of foreign matter in the sample precisely it is provided that prior to the detection of the aforementioned groups of foreign matter glass particles are sorted out in a first step from the material stream flowing over the free-falling track and the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.