Life ClayGlass pilot: mixture of recycled glass and natural clays for ceramics

Altglas (Foto: O. Kürth)

Valencia, Spain — The ceramic industries uses natural clays as raw material, which requires high temperature in cooking processes of ceramic tile products. The mixture of clay with recycled glass represents a decrease in these temperatures, which results both in energy savings for industry and fewer CO2 emissions. Life ClayGlass is an innovative pilot project, selected by the European Commission under the LIFE + Program in the call 2012 among 743 projects submitted.

The use of recycled glass as a raw material entails the transformation of a waste into a resource, diversifying and extending the possibilities of the use of glass at the end of its span life. The material can be taken from electrical and electronical waste, end-of-life vehicles or glass mixed with municipal solid waste. In this sense, the use of glass as a flux lowers the quality requirements of source material and glass of any type; composition and color may be used.

An energy saving of 10 to 15 per cent and a reduction of about 2,000 tons of CO2 per year for a medium sized factory with a brick production capacity of 300 tons per day is estimated.

The replacement of clay by glass contributes to the preservation of a natural resource, reducing the ecological footprint and promoting recycling of recoverable waste. The project is therefore a test of the willingness to participate in the challenge related to the environment and sustainable development promoted by the European Union through its legislation.

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Source: Proyecto Life ClayGlass