sodium aluminum fluoride
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sodium fluoaluminate — noun : a crystalline complex salt Na3AlF6 that occurs in nature as cryolite, is also made synthetically, and is used chiefly in ceramics, in metallurgy especially as an electrolyte in the production of aluminum from alumina, and as an insecticide … Useful english dictionary
aluminum processing — Introduction preparation of the ore for use in various products. Aluminum, or aluminium (Al), is a silvery white metal with a melting point of 660° C (1,220° F) and a density of 2.7 grams per cubic centimetre. The most abundant… … Universalium
aluminum — aluminic /al yeuh min ik/, adj. /euh looh meuh neuhm/, n. 1. Chem. a silver white metallic element, light in weight, ductile, malleable, and not readily corroded or tarnished, occurring combined in nature in igneous rock, shale, clay, and most… … Universalium
Fluoride therapy — is the delivery of fluoride to the teeth topically or systemically in order to prevent tooth decay (dental caries) which results in cavities. Most commonly, fluoride is applied topically to the teeth using gels, varnishes, toothpaste/dentifrices… … Wikipedia
fluorine — /floor een, in, flawr , flohr /, n. Chem. the most reactive nonmetallic element, a pale yellow, corrosive, toxic gas that occurs combined, esp. in fluorite, cryolite, phosphate rock, and other minerals. Symbol: F; at. wt.: 18.9984; at. no.: 9.… … Universalium
cryolite — /kruy euh luyt /, n. a mineral, sodium aluminum fluoride, Na3AlF6, occurring in white masses, used as a flux in the electrolytic production of aluminum. Also called Greenland spar. [1795 1805; CRYO + LITE] * * * ▪ mineral colourless to… … Universalium
Hall , Charles Martin — (1863–1914) American chemist Hall was born in Thompson, Ohio, and educated at Oberlin College, graduating in 1885. He became interested in the costly process of manufacturing aluminum – until the late 19th century aluminum was a precious metal… … Scientists
Héroult, Paul-Louis-Toussaint — ▪ French scientist born April 10, 1863, Thury Harcourt, Fr. died May 9, 1914, near Antibes French chemist who invented the electric arc furnace (electric furnace) widely used in making steel and, independently of the simultaneous work of… … Universalium
cryolite — cry•o•lite [[t]ˈkraɪ əˌlaɪt[/t]] n. mir a mineral, sodium aluminum fluoride, Na3AlF6, occurring in white masses, used as a flux in the electrolytic production of aluminum • Etymology: 1795–1805 … From formal English to slang
Aluminium — Infobox aluminiumAluminium (Audio IPA|En uk aluminium1.ogg|ˌæljʊˈmɪniəm, IPA|/ˌæljəˈmɪniəm/) or aluminum (Audio IPA|En uk aluminum.ogg|/əˈluːmɪnəm/, see spelling below) is a silvery white and ductile member of the boron group of chemical elements … Wikipedia
