Liquation

(redirected from liquate)
Also found in: Dictionary.

liquation

[lī′kwā·shən]
(metallurgy)
Separation of fusible metals from less fusible ones by applying heat.
The partial melting of an alloy.

Liquation

 

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.


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.

REFERENCES

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.

F. K. SHIPULIN

References in periodicals archive ?
A liquate concentration of (S1) 53.65 ppm of AgNPs was Un-Competitive inhibition for GOT enzyme activity.
Paul, MN, has officially closed after company officials announced plans to liquate all of the plant's assets.
As many as six localities have been specified for the application, including Liquate Bagh.
Tenders are invited for Supply of Miscellaneous, Liquate & Sport Items 106.
The leaders of PPP would address a procession in Liquate Bagh and city President Amir Fida Paracha would preside.
Sub-Inspector Liquate, and others succeeded to bust a gang involved in looting people portraying themselves as police officials.
As per details, unknown gunmen killed one person Muhammad Hassan by firing at a hardware shop in Liquate Abad.
A high level investigation committee under CCPO Peshawar Liquate Ali Khan has been constituted for investigation of Peshawar blast.
The delegation included Malik Sather, Chairman TWA, Zafar Bakhtawari, Syed Amen Prized, Ashen Bakhtawari, Liquate Noon, Haji Muhammad Name, Yuma Rapt, Shahid Alma, Shakily Aziz, Abdul Humid Abbasid and Name Sodium.
Tenders are invited for Supply of Miscellaneous, Liquate & Sport Items Dao with Handle (2 Kg weight.) Each, DAP per kg, Deed Box (20 x 18 ) Each, Dettol liquid 100 ml Bottle per bottle, Distemper 10kg pot per pot, , Distemper 20kg pot per pot, Distemper 2kg pot per pot, Distemper 5kg pot per pot, Door King Lock Each, Door Lock Ring Each, Door mat (Papoose) 24 x16 ) Each, Door mat (Papoose) 36 x18 ) Each, Door mat (Papoose) Plastic per sq.
Tenders are invited for Miscellaneous, Liquate & Sport Items Boot Polish 50 gm weight Black/ Brown Each, Brass Bell 3 Kg weight Each, Burma (Gyeti) 24 Each, Candle Big (6 nos pkt) Per pkt, Candle Big 12 length 150 gm wt.