Definition

Noun: 1. A white crystalline oxide used in the production of calcium hydroxide: This is a chemical compound, also known as quicklime or calcium oxide (CaO). It is produced by heating limestone and is highly reactive, especially with water.

Usage

• The term "fluxing lime" is a technical and industrial name. It is used in contexts like metallurgy, construction, and chemical manufacturing.
• It specifically highlights the compound's role as a flux—a substance used to promote fusion (melting) or to remove impurities, especially in metal refining and smelting processes.

Examples

• Noun:
  • The steel mill ordered several tons of fluxing lime for the next smelting operation.
  • In the production process, fluxing lime reacts with silica impurities to form slag.

Advanced Usage

• Technical Context: In metallurgy, "fluxing lime" is not just a material but describes a function. It refers to the use of calcium oxide to lower the melting point of a mixture or to chemically combine with impurities so they can be easily removed.
  • The efficiency of the furnace improved after optimizing the fluxing lime ratio.

Variants and Related Words

• Quicklime (n): The common industrial name for calcium oxide.
• Calcium Oxide (n): The systematic chemical name (CaO).
• Burnt Lime (n): Another synonym emphasizing its production by calcination (burning).
• Lime (n): A more general term that can refer to calcium oxide, calcium hydroxide, or even the fruit. Context is crucial.

Synonyms

• Quicklime
• Calcium oxide
• Burnt lime
• Calx (archaic/technical)

Notes on Different Meanings

• The word "lime" alone is ambiguous. It can mean:
  • The citrus fruit.
  • Calcium hydroxide (slaked lime, used in mortar and plaster).
  • Calcium oxide (quicklime, as defined here).
• The modifier "fluxing" specifies the application (use as a flux) of the calcium oxide, distinguishing it from other uses like in cement production or water treatment.

Noun

1. a white crystalline oxide used in the production of calcium hydroxide