Glass recycling in cement production-an innovative approach

摘要

An innovative approach of using waste glass in cement production was proposed and tested in a laboratory and cement pro- duction plant. The laboratory characterization of 32 types of glass show that the chemical composition of glass does not very sig- nificantly with its color or origin but depends on its application. The alkali content of glass, a major concern for cement production varies from 0 to 22/100. For the glass bottles mainly found in Hong Kong waste glasses, the alkali content (na_2O) ranges from 10 to 19/100 with an average around 15/100.