Each CRT contains an electron gun and at least one getter. It is a small, circular troughs attached by a metallic stripe to the electron gun and filled with an earth metal, barium (Ba) being the most common. Barium is used to remove last traces of oxygen in the CRT. It is very reactive with air and water where it forms barium oxide. Ba is poisonous when dissolved in water. Therefore the getter platelet should not be touched during dismantling of CRTs.
According to Pramreiter et al (2007) the getter platelet has to be separated from the electron gun. The getter platelet has to be stored in drums protected against ingress and disposed as hazardous waste.
The electron gun consists of a high-alloyed nickel steel and can be commercialised as a recycling fraction.
Source of information
Dismantling Guide for IT Equipment, which was elaborated within the SRI project and financially supported by SECO and UNIDO, June 2015