why are cullets used in glass manufacture
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The use of cullet in a glass furnace can significantly reduce the energy consumption because cullet has a lower melting energy requirement than the constituent raw materials – as the endothermic chemical reactions associated with glass formation have been completed – and its mass is approximately 20 % lower than the equivalent batch materials.
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In addition energy saving, cullet reduce the amount of raw materials used, decrease energy used in producing the raw material , and increase the life of the furnace by up to the 30% due to decrease melting temperature and. a less corrosive batch.
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