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单词 leaching
释义 leaching
[`lēch·iŋ]
CHEMICAL ENGINEERING
The dissolving, by a liquid solvent, of soluble material from its mixture with an insoluble solid; leaching is an industrial separation operation based on mass transfer; examples are the washing of a soluble salt from the surface of an insoluble precipitate, and the extraction of sugar from sugarbeets.
GEOCHEMISTRY
The separation or dissolving out of soluble constituents from a rock or ore body by percolation of water.
MINING ENGINEERING
Dissolving soluble minerals or metals out of the ore, as by the use of percolating solutions such as cyanide or chlorine solutions, acids, or water. Also known as lixiviation.
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