Apparatus for the preparation of alkali metal monofluorhosphates

Details Apparatus for the preparation of alkali metal monofluorhosphates Apparatus for the preparation of alkali metal monofluorhosphates

1991-01-16

1993-03-30

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204147, 422202, 423301, 423305, C23F 1300

Patent

active

051980886

ABSTRACT:
An apparatus for the preparation of alkali metal monofluorophosphates is disclosed. The apparatus includes a melting crucible of a platinum/rhodium alloy, devices for feeding the alkali metal fluoride and alkali metal metaphosphate or alkali metal polyphosphate raw materials into the upper part of the crucible, an outflow orifice for molten alkali metal fluorophosphate in the bottom of the crucible, a corresponding discharge orifice in the furnace, and a cooling arrangement, wherein a direct voltage is applied between the cooling arrangement and the melting crucible which is connected as the anode.

REFERENCES:
patent: 641438 (1900-01-01), Darling
patent: 3345278 (1967-10-01), Mekjean

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