Glass Cullet: Removal of Leaded and Heat Resistant Glass from Glass Cullet Streams
For some time, glass ceramics have been causing problems throughout the glass recycling industry. The melting behavior of glass ceramics is different from that of 'normal' glass; therefore, they will not dissolve in the melting tank at the glassworks, or dissolve only with great difficulty. This poses an array of problems; from serious damage and fire-hazard during the production process to defects or inclusions in the final product. The expanded use of glass ceramics and its tendency to turn up in recycling glass is on the rise; and it is problematic for glass collectors and processors to recognize glass ceramics visually when conducting inspection for incoming materials. In conjunction with the rising glass ceramics problem, glass recyclers are also facing the challenge of keeping the lead content of their glass cullet below a certain level, due to the increased stringency of legeslated regulations.
BT-Wolfgang Binder utilizes X-STREAM sensor technology in their REDWAVE XRF G glass sorting systems which offers glass cullet processors the ability to sort glass by elemental composition. The XRF sensor searches for certain elements such as Titanium, Zinc, Zirconium (which are typical markers for glass ceramics) and Lead. The system then efficiently extracts the contaminations by using air jet diversion. The REDWAVE XRF G systems by BT-Wolfgang Binder are capable of processing up to 28 tons/hour of glass cullet, extracting glass ceramics and leaded glass simultaneously.
X-STREAM: Metal
The REDWAVE XRF-M analyzes and evaluates materials according to chemical composition to reliably detect and sort unwanted parts. In contrast to other technologies, moisture, color and surface impurities have no negative effect on the detection ability. This technology can be used in sorting processes to recognize an accumulation of element characteristics, including the detection of undesired materials.
Applications:
Stainless steel
Non-ferrous metals such as brass, bronze, copper and zinc
Sorting of various scrap metals
Separation of various aluminum groups
Benefits:
A high level of detection is guaranteed even in the presence of material which is dirty or otherwise contaminated
Elemental analysis of the feed material
Color independent recognition is possible (for example, for the sorting of aluminium, zinc, stainless steel)
Sorting of alloys
Possible applications:
Sorting of slag: separation of various metals from a mixture of slag and metals
Sorting of aluminum
Separation of various impurities of metallic origin (Cu, Zn, VA, brass, Pb, etc.)
Separation of various impurities of different origin (e.g. wood, plastics) by means of camera technology
Separation of aluminum alloys with a higher Zn or Cu content
Sorting of stainless steels
Separation of impurities such as Cu, Zn, brass, Pb, Sn in pure form and in the form of alloys. A pure fraction of steel / stainless steel is produced
Separation of stainless steels from a mixture of steel and stainless steel
Separation of stainless steels with Mo contents according to adjustable Mo concentration
Separation of stainless steels with Ni contents according to adjustable Ni concentrations
Sorting of non-ferrous metals and other metals
Separation of Cu, Zn, brass, etc. in pure fractions
Production of a pure Cu fraction
Production of a pure brass fraction
Sorting of precious metals
Separation of materials containing Au
Separation of materials containing Ag
Special applications
Sorting of Cu tubes
Separation of Ag soldering joints
In general: Sorting of various alloys on the basis of differences in the composition of the elements, e.g. presence of an element in alloy A, which is not existent in B and C, etc.