riddlings

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• riddlings — riddˈlings plural noun 1. The less desirable part of anything, whether finer or coarser, separated by riddling and usu rejected 2. Refuse • • • Main Entry: ↑riddle …   Useful english dictionary

• Lime kiln — A lime kiln is a kiln used to produce quicklime by the calcination of limestone (calcium carbonate). The chemical equation for this reaction is::CaCO3 + heat → CaO + CO2This reaction takes place at 900°C (at which temperature the partial pressure …   Wikipedia