The recycling of trash glass is strongly required from the views of the environmental pollution and the re-use of wasted glass. It is the present purpose how the trash glass can be processed and changed to the insulation materials technologically. After the trash glass is grounded into<SOμ powder by amortar or aball-mill in ethyle alcohol, the obtained slurry powder is mixed with calcium carbonate and others. Such slurry, then, is pressed under the pressure of 20 MP and heated at 800℃ in the

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... . Judging from the results of many physical and mechanical tests of the finally obtained materials, i.e., porous ceramics could be used as the insulation materials.