Lime sandstone production by low temperature and pressure process

摘要

A lime sandstone production process involves subjecting a dry mix of >4 mm size light aggregate (preferably expanded clay), <= 4 mm size ground expanded clay sand and lime binder (CaO or Ca(OH)2) to mixing with water, moulding and heat treatment at 60-100 deg C for 24-120 hrs. at atmospheric pressure and saturated air humidity.