Use Of The Kubelka-Munk Theory For Optimising Green Porcelain Tile Waste Recycling (In Spanish)

The porcelain tile manufacturing process gives rise to waste sludges, whose disposal entails environmental problems. A possible solution is reuse in the manufacturing process, though this leads to a change of colour in the resulting fired product. This study describes the use of the Kubelka-Munk theory for predicting the fired colour of the final mixture. This procedure could greatly optimise recycling, since it enables producing a material with chromatic characteristics practically identical to those of the reference tile, so that the sludge can be recycled without altering the production programme.