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Lyell Cave
The Lyell Cave, formerly called ''Grande caverne d'Engihoul'', is located near the '' ancienne commune'' of Éhein, municipality of Engis, Liège Province, Belgium. It is one of many caves investigated or discovered by Philippe-Charles Schmerling, in 1831; the cave is named for a later researcher, Sir Charles Lyell, who visited the cave in 1860. Together with the Rosée Cave, it was classified as an in July 1988, making it accessible only to scientific researchers. The cave's troglofauna includes Belgium's only cave-inhabiting beetle, '. Location The Lyell Cave is located in Éhein on the edge of the valley of Engihoul, where the stream named Engihoul runs by the ''route des 36 tournants'', in a syncline formed during the Viséan, near the "Lion's quarry". Name Philippe-Charles Schmerling wrote of his searches in the "caves of Engihoul" in his book ''Recherches sur les ossemens fossiles découverts dans les cavernes de la province de Liège'', which was published two years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lime Kiln
A lime kiln is a kiln used for the calcination of limestone (calcium carbonate) to produce the form of lime (material), lime called quicklime (calcium oxide). The chemical equation for this chemical reaction, reaction is :Calcium carbonate, CaCO3 + heat → Calcium oxide, CaO + Carbon dioxide, CO2 This reaction can take place at anywhere above 840 °C (1544 °F), but is generally considered to occur at 900 °C(1655 °F) (at which temperature the partial pressure of CO2 is 1 atmosphere (unit), atmosphere), but a temperature around 1000 °C (1832 °F) (at which temperature the partial pressure of CO2 is 3.8 atmospheres) is usually used to make the reaction proceed quickly.Parkes, G.D. and Mellor, J.W. (1939). ''Mellor's Modern Inorganic Chemistry'' London: Longmans, Green and Co. Excessive temperature is avoided because it produces unreactive, "dead-burned" lime. Slaked lime (calcium hydroxide) can be formed by mixing quicklime with water. Early li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
