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Related to Liquation: zone refining, electrolytic refining


Separation of fusible metals from less fusible ones by applying heat.
The partial melting of an alloy.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



in nonferrous metallurgy, the process of separating an alloy into its component parts based on the difference in their melting points. When an alloy is heated slowly, the metals and low-melting eutectics melt out of it; the refractory part remains as a friable, spongy mass. Reverbatory furnaces with sloping hearths are used for liquation.



(geology), the process of the separation of an initially uniform magmatic melt into two immiscible liquids of differing composition as the temperature drops. As a result of the crystallization of the liquids, mineral aggregates (rock and ores) of differing composition are formed.

In the second half of the 19th century, liquation was viewed as one of the forms of the differentiation of magma, as a result of which there arose different parent magmas that gave rise to all the various igneous rocks. Subsequently, as a result of experimental data on silicate systems, a study of metallurgical slags and glass, as well as petrographie studies, the areas where liquation could be employed to explain geological processes were greatly reduced. Many researchers consider liquation a factor in the formation of magmatic sulfide ores. Liquation is also thought to be significant with respect to the formation of chamber pegmatites, the varioles in variolites, and certain ore-forming solutions. Liquation phenomena in silicate melts, particularly those rich in volatile components (fluorine, water, and boron), have been substantiated experimentally by American (O. F. Tuttle and J. Friedman) and Soviet (D. P. Grigor’ev, O. A. Esin, la. I. Ol’-shanskii) geologists.


Beliankin, D. S. “Magmaticheskaia likvatsiia—mozhno li verit’ v nee i kakie my imeem k tomu osnovaniia?” Izv. AN SSSR: Seriia geologi-cheskaia, 1949, no. 5.
Dolomanova, E. I. “O vozmozhnoi roli likvatsii silikatnykh rasplavov v rudoobrazovanii.” In Ocherki geokhimii endogennykh i gipergennykh protsessov. Moscow, 1966.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The procedure applies to situations where a company is dissolved and fails to conduct a timely liquation. The court will initiate a compulsory liquation procedure to liquate the dissolved company.
Influence of Electron Beam Welding Parameters and Metallurgical Factors on Intergranular Liquation Cracking Susceptibility of Cast Alloy 718.
Direct impacts on livestock production are also assessed through forced liquation of breeding stock above normal culling rates.
After liquation of FBC, financing to PPCBL was diverted to SBP under the guarantee of Punjab government.
Following delivery of the termination notice, the court entered an order commencing the SIPA proceeding and authorizing the trustee appointed to oversee the liquation of LBI's estate to take immediate possession of LBI's property.
It is quite clear that the main area of application of ESR TC is the remelting of creep-resisting alloys, susceptible to spotty liquation. The ingots of these alloys have a considerably smaller weight.
Commonly occurring "chondrulein-chondrule" texture is indicative of multiple liquation layering of matter and its intense chaotic mixing (convection).
"Shock liquation of sand clay", Beijing: Earthquake Industry Press.
The lead plant treats sulphide concentrates by sintering, shaft furnace reduction, two stage liquation of copper and alkaline oxidation of impurities.