Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1991-06-28
1992-12-15
Niebling, John
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
C25B 700
Patent
active
051714094
ABSTRACT:
Process of continuously separating electrically charged, solid pulverulent materials in the form of a suspension in an electrophoresis and electroosmosis cell, characterized in that a fraction of the catholyte is drained off, that a portion thereof is treated with an acid, preferably gaseous, agent, that the treated portion is re-introduced into the cathode compartment, whereas the other part of the drained-off fraction is eliminated.
The acid treatment is effected during continous pH measurements on the drained-off fraction of the catholyte.
REFERENCES:
patent: 4003811 (1977-01-01), Kunkle
patent: 4168222 (1979-09-01), Freeman
patent: 4312729 (1982-01-01), Wills
patent: 4501648 (1985-02-01), Ritter
patent: 4615776 (1986-10-01), Sasaki
patent: 4719019 (1988-01-01), Vasan
Barnier Henri
Barroyer Bernard
Cabannes Claude
Bell Bruce F.
Niebling John
Omya S.A.
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