Lead extraction from Cathode Ray Tube (CRT) funnel glass: Reaction mechanisms in thermal reduction with addition of carbon (C).

  title={Lead extraction from Cathode Ray Tube (CRT) funnel glass: Reaction mechanisms in thermal reduction with addition of carbon (C).},
  author={Xingwen Lu and Xun-An Ning and Da Chen and Kui-Hao Chuang and Kaimin Shih and Fei Wang},
  journal={Waste management},
This study quantitatively determined the extraction of lead from CRT funnel glass and examined the mechanisms of thermally reducing lead in the products of sintering Pb-glass with carbon in the pre-heated furnace. The experimentally derived results indicate that a 90.3 wt% lead extraction efficiency can be achieved with 20 wt% of C addition at 950 °C for 3 min under air. The formation of viscous semi-liquid glass blocked the oxygen supply between the interaction of C and Pb-glass, and was… 
Chemical–Electrochemical Process Concept for Lead Recovery from Waste Cathode Ray Tube Glass
The developed recovery process allows the simultaneous recovery of Pb from waste CRT glass and electrochemical regeneration of the leaching agent and indicates that the developed process not only achieve a complete recovery of lead but it is eco-friendly as well.
A preliminary study of the concentration of special purpose elements and precious metals in the enriched precipitates produced by a wet method of cathode-ray tube recycling
The purpose of the work is to investigate the existence and the possibility of recovering economically interesting elements, such as precious metals and rare earth elements, from phosphor layers of
Experimental study on the reuse of cathode ray tubes funnel glass as fine aggregate for developing an ecological self-compacting mortar incorporating metakaolin
Abstract Industrial waste causes a lot of pollution, particularly electrical and electronic waste (WEEE) such as glass cathode ray tubes (CRT) which create environmental pollution and health hazards.
Research Progress on Recycling Technology of Lead-containing Glass in Waste Cathode Ray Tubes
With the development of kinescope technology, the quantity of discarded cathode ray tubes (CRTs) glass continues to increase. The waste CRTs glass contains a lot of lead, which could bring about the
Rheological properties of blended metakaolin self-compacting concrete containing recycled CRT funnel glass aggregate
Rheology is a field of fluid mechanics that studies the flow of materials and the interaction between stress states and deformation according to their viscosity, elasticity and plasticity and with
A Szilikátipari Tudományos Egyesület lapja
The concept of sustainability is now considered as the key of the future, not just for industry but also for all resources on this planet. The real guarantee for the continuation of life is by


Extraction of metallic lead from cathode ray tube (CRT) funnel glass by thermal reduction with metallic iron.
Results indicate that a 58 wt% lead extraction can be achieved with the optimized operational parameters (50 wt % Fe addition, heating at 700 °C for 30 min) in a single extraction operation.
Feasibility of lead extraction from waste Cathode-Ray-Tubes (CRT) funnel glass through a lead smelting process.
It is concluded that the process proposed in this paper is an effective and promising approach for reutilization of obsolete CRT funnel glass.
Lead recovery from cathode ray tube funnel glass with mechanical activation
In the disposal of electronic waste, cathode ray tube (CRT) funnel glass remains an urgent environmental problem because of its high lead content. This research developed mechanical activation as a
Lead removal from cathode ray tube glass by the action of calcium hydroxide and poly(vinyl chloride)
Abstract With the development of flat screen technology, the cathode ray tubes (CRTs) used in TV sets became obsolete, leaving huge amounts of lead-containing CRT glass for disposal. We developed a
Removal of lead from cathode ray tube funnel glass by chloride volatilization
Cathode ray tube funnel glass is an environmentally problematic relict of old television sets. In particular, landfilling of this material is strongly discouraged because of its high lead content.
Lead extraction from cathode ray tube funnel glass melted under different oxidizing conditions.
  • T. Okada
  • Materials Science, Medicine
    Journal of hazardous materials
  • 2015
X-ray photoelectron spectroscopic analysis of the treated glass samples showed that the positions of the peak or the profiles of the spectra attributed to Pb 4f, Si 2p, and O 1s signals were modified by oxidative melting, an indication that oxidative melting results in structural changes in the SiO2 framework of the glass.
Preparation of lead oxide nanoparticles from cathode-ray tube funnel glass by self-propagating method.
It was found that self-propagating reaction in the presence of Mg and Fe(2)O(3) could separate lead preferentially and superfine lead oxide nanoparticles were obtained from a collecting chamber and the separation ratio was related closely to the amount of funnel glass added in the original mixture.
Lead extraction from waste funnel cathode-ray tubes glasses by reaction with silicon carbide and titanium nitride.
  • P. Yot, F. Méar
  • Materials Science, Medicine
    Journal of hazardous materials
  • 2009
Investigations have evidenced a change of role of lead inside the glassy framework in function of the used conditions, and evidenced that lead reduction occurs on randomized zones inside the sample leading to macroscopic lead beads inside glassy samples.
Lead recovery and the feasibility of foam glass production from funnel glass of dismantled cathode ray tube through pyrovacuum process.
A novel and effective process for funnel glass of dismantled CRT treatment was developed to recover metallic lead from the funnel glass and to prepare foam glass synchronously, and Experimental results showed that lead recovery rate increased first with the increase of temperature, carbon adding amount, and holding time, then reached a plateau value.
Energy-efficient modification of reduction-melting for lead recovery from cathode ray tube funnel glass.
In this study, the reduction melting of the funnel glass was performed at 900-1000 °C using a lab-scale reactor with varying concentrations of Na(2)CO(3) at different melting temperatures and melting times.