| 词汇 | cryolite |
| 释义 | cryolite noun[ U ] uk /ˈkraɪ.əʊ.laɪt/ us /ˈkraɪ.oʊ.laɪt/ a white or colourless mineral used in the production of aluminium, glass, and other substances冰晶石 Geology: types of rock agglomerate arenaceous arenite asthenosphere asthenospheric emery flinty gneiss intrusive lahar limestone lodestone magma marcasite marl marmoreal mudstone obsidian sandstone schist Examples of cryolitecryolite Fox worked for the cryolite company between 1864 and 1905. On the other hand, the synthetic form of cryolite is chargeable under heading 28.29 as aluminium sodium fluoride. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 I am told that cryolite in its natural form is exempt from the charge under heading 25.28. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 There cryolite is used, which is sodium aluminium fluoride, and this is probably the most potent localised source of giving a neighbourhood risk. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The work also includes very large amounts of fluorides, which are an essential part of the manufacture of cryolite, one of the materials by which alumina is made into aluminium. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 A few ocular prostheses today are made of cryolite glass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There, she guarded the cryolite minewhich provided ore vitally needed for the production of aluminumfrom the 16th to the 26th. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is mainly produced as a precursor to aluminum trifluoride and synthetic cryolite. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Cryolite was eventually synthesized, reducing the importance of the mine, and production was finally found uneconomical and discontinued in 1987. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Natural cryolite was historically required for the production of aluminium, however, currently most cryolite used is produced synthetically. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When cryolite is used for the preparation of alum, it is mixed with calcium carbonate and heated. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Molten cryolite was discovered to dissolve alumina at temperatures significantly lower than the melting point of pure alumina without interfering in the smelting process. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The rest is converted into corrosive hydrogen fluoride en route to various organic fluorides, or into cryolite which plays a key role in aluminium refining. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alucyc technology is waste-free, cryolite and the remaining aluminium oxide could be used in melting of primary aluminium as additives. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He realized that by passing an electrical current through a bath of cryolite and aluminum oxide, the then semi-rare metal aluminum remained as a byproduct. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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