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quicklime    
n. 生石灰

生石灰

quicklime
n 1: a white crystalline oxide used in the production of calcium
hydroxide [synonym: {calcium oxide}, {quicklime}, {lime},
{calx}, {calcined lime}, {fluxing lime}, {unslaked lime},
{burnt lime}]

Lime \Lime\, n. [AS. l[imac]m; akin to D. lijm, G. leim, OHG.
l[imac]m, Icel. l[imac]m, Sw. lim, Dan. liim, L. limus mud,
linere to smear, and E. loam. [root]126. Cf. {Loam},
{Liniment}.]
1. Birdlime.
[1913 Webster]

Like the lime
That foolish birds are caught with. --Wordsworth.
[1913 Webster]

2. (Chem.) Oxide of calcium, {CaO}; the white or gray,
caustic substance, usually called {quicklime}, obtained by
calcining limestone or shells, the heat driving off carbon
dioxide and leaving lime. It develops great heat when
treated with water, forming {slaked lime}, and is an
essential ingredient of cement, plastering, mortar, etc.
[1913 Webster PJC]

Note: Lime is the principal constituent of limestone, marble,
chalk, bones, shells, etc.
[1913 Webster]

{Caustic lime}, Calcium hydroxide or slaked lime; also, in a
less technical sense, calcium oxide or quicklime.

{Lime burner}, one who burns limestone, shells, etc., to make
lime.

{Lime pit}, a limestone quarry.

{Lime rod}, {Lime twig}, a twig smeared with birdlime; hence,
that which catches; a snare. --Chaucer.
[1913 Webster]


Quicklime \Quick"lime\, n. [See {Quick}, a.] (Chem.)
Calcium oxide; unslacked lime; -- so called because when wet
it develops great heat. See 4th {Lime}, 2.
[1913 Webster]



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  • Calcium oxide - Wikipedia
    Calcium oxide (formula: Ca O), commonly known as quicklime or burnt lime, is a widely used chemical compound It is a white, caustic, alkaline, crystalline solid at room temperature The broadly used term lime connotes calcium-containing inorganic compounds, in which carbonates, oxides, and hydroxides of calcium, silicon, magnesium, aluminium, and iron predominate By contrast, quicklime
  • Quicklime | Formula, Uses, Definition | Britannica
    quicklime (CaO), compound of one atom of calcium and one atom of oxygen that is a white or grayish white solid produced in large quantities by roasting calcium carbonate so as to drive off carbon dioxide At room temperature, CaO will spontaneously absorb carbon dioxide from the atmosphere, reversing the reaction It will also absorb water, converting itself into calcium hydroxide and
  • What Is Quicklime and How Is It Made? - Biology Insights
    The resulting quicklime is a highly reactive substance, distinct from hydrated lime, or slaked lime, which is the product formed when quicklime is mixed with water The Critical Chemical Property The most distinguishing characteristic of quicklime is its intense and highly exothermic reaction with water, a process called slaking
  • How to Make Quicklime: 10 Steps (with Pictures) - wikiHow
    Quicklime, also known as calcium oxide (CaO), is a caustic alkaline substance It has been used by humans for centuries for many things such as mortar, flux, treating corn, and in mixtures to waterproof boats It has also been used to
  • What to Know Before Using Quicklime in Your Garden
    What Is Quicklime? Quicklime is a chemical compound with the formula CaO (calcium oxide) It is produced by heating limestone (calcium carbonate) at high temperatures in a process called calcination The heating drives off carbon dioxide, leaving behind calcium oxide, which is quicklime Quicklime is different from hydrated lime or slaked lime (calcium hydroxide), which is produced when
  • What is quicklime and why is it used in water treatment?
    Quicklime is produced by calcining limestone, releasing CO₂ and leaving calcium oxide, which reacts vigorously with water to form hydrated lime It is primarily used to raise pH, soften hard water, and enhance coagulation, improving clarity and reducing harmful ions in water supplies
  • Where Can I Buy Quicklime? Your Guide to Purchasing This Useful Chemical
    Ready to Buy Quicklime? Now that you know where you can source quicklime and what to look for when purchasing, you’re ready to buy this essential chemical compound Choosing the right quantity, quality, and supplier will ensure you get the quicklime you need for your specific application
  • What Is Quicklime and How Is It Used? - Prescott eNews
    Quicklime is calcium oxide and has been widely used in many industrial sectors An alternative to chalk and derived from limestone, it possesses special properties appreciated in construction
  • Where to Buy Quicklime and What to Know Before You Do
    Find out where to buy quicklime, how to choose the correct grade (CaO), and the critical safety steps for transport and storage
  • Lime kiln - Wikipedia
    Lime kiln Rotary lime kiln (rust-colored horizontal tube at right) with preheater, Wyoming, 2010 Traditional lime kiln in Sri Lanka A lime kiln is a kiln used for the calcination of limestone (calcium carbonate) to produce the form of lime called quicklime (calcium oxide) The chemical equation for this reaction is: CaCO 3 + heat → CaO + CO 2





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