Chemical elements
    PDB 16pk-1c8m
    PDB 1c9d-1eau
    PDB 1ec0-1grn
    PDB 1gs4-1j97
    PDB 1jdj-1mu8
    PDB 1mue-1oyt
    PDB 1oz1-1rby
    PDB 1rbz-1tu6
    PDB 1tuy-1w9i
    PDB 1w9j-1yw2
    PDB 1yw9-2ax8
    PDB 2ax9-2dqt
    PDB 2dqu-2ftk
    PDB 2fvd-2hhn
    PDB 2hiw-2izs
    PDB 2j51-2onh
    PDB 2oo8-2pow
    PDB 2pq9-2qzl
    PDB 2qzo-2vev
    PDB 2vew-2wf7
    PDB 2wf8-2xhd
    PDB 2xkk-3ar9
    PDB 3az8-3cej
    PDB 3cem-3dh3
    PDB 3dhf-3el7
    PDB 3el8-3fln
    PDB 3flq-3gc7
    PDB 3gc8-3h7w
    PDB 3h82-3i81
    PDB 3i8d-3jx1
    PDB 3jx2-3ktk
    PDB 3ktu-3lj6
    PDB 3lk9-3mqf
    PDB 3ms4-3nz7
    PDB 3o1g-3p4a
    PDB 3p4b-3ti1
    PDB 3tik-4acx
    PDB 4afe-4fk3
    PDB 4fod-7gch

Fluorine Production


Elemental fluorine is prepared industrially by Moissan's original process: electrolysis of fusion KFx(1.8-2.0)HF, which is enriched by HF up to 40-41%. Hydrofluoric acid, which is the main source of fluorine, may be obtained from the reaction between sulphuric acid H2SO4 and calcium fluorite CaF2, or by apatite and phosphorites processing. The electrolytic furnace is made from steel, electrodes: carbon anode and steel cathode. Electrolysis is processed by 95-100°C with voltage 9-11 V. The fluorine power yield may reach 90-95%. Produced fluorine may contain up to 5% of hydrofluoric acid HF which is removed by freezing and absorbing by sodium fluoride. Fluorine is stored either in gaseous state under pressure or as liquid, cooled by liquid nitrogen in special equipment made of nickel and its alloys (Monel) with copper, aluminium and its alloys, stainless steel or brass.

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