World production of lime in 2014 was 360 Mt. The term lime may refer to CaO (quicklime)
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World production of lime in 2014 was 360 Mt. The term ‘lime’ may refer to CaO (quicklime) and/or slaked lime (Ca(OH)2), but is also used to include CaO, Ca(OH)2, CaO·MgO, Ca(OH)2·MgO and Ca(OH)2·Mg(OH)2.
(a) How are CaO and CaO·MgO manufactured?
(b) Describe the role of CaO in the building industry.
(c) How is CaO converted to calcium carbide. Comment on recent trends in the industrial importance of this reaction.
(d) In the paper industry, wood chips are converted to pulp by treatment with aqueous NaOH and Na2S. Heating the spent liquor gives Na2CO3. Explain how treating this residue with Ca(OH)2 followed by appropriate steps allows both NaOH and Ca(OH)2 to be recovered.
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a Manufacturing of CaO and CaOMgO CaO Quicklime Manufacturing CaO also known as quicklime or burnt lime is produced by heating limestone calcium carbonate CaCO3 in a lime kiln at high temperatures The ...View the full answer
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