Chlorine Engineers Corp., Ltd.

Tanaka Kikinzoku Kogyo K.k.

Nobutaka Goto

Nobuyasu Ezawa

Hiroshi Daidoji

Tadashi Kuninaga

Michiru Naito

Process for dissolution and recovery of noble metals

In an electrolytic cell of the type which includes a cylindrical electrolytic cell main body divided into a main electrode chamber and an auxiliary electrode chamber by a diaphragm, and having main electrode particles in the main electrode chamber, which are maintained in the fluidized state by an electrolyte supplied to the main electrode chamber, an improvement is disclosed wherein an electrolyte supply port and an electrolyte discharge port are provided to enable flow of electrolyte through said cell to maintain the fluidized state of said particles, and a porous auxiliary electrode is provided in contact with the diaphragm on the side thereof facing said auxiliary electrode chamber, to facilitate flow of gas generated on the auxiliary electrode in the direction of the auxiliary chamber.

Electrolytic cell employing fluidized bed

Electrolyzing method and electrolytic cell employing fluidized bed

A process for producing chlorine dioxide which comprises

Process for producing chlorine dioxide

A process for producing sodium hypochlorite comprising electrolyzing an aqueous solution of sodium chloride as an electrolyte solution in a non-diaphragm electrolytic cell comprising at least one unit cell in which the ratio of the actual area of the anode to the actual area of the cathode is at least about 1.5: 1. In a preferred embodiment higher concentrations of sodium hypochlorite can be attained by performing the electrolysis while cooling the electrolyte solution to about 50.degree. C. or less.

Process for producing sodium hypochlorite

A process for producing an alkali metal hypochlorite which comprises electrolyzing an aqueous solution of an alkali metal chloride in an electrolytic cell including a plurality of unit cells, each equipped with at least one anode and at least one cathode, in which the unit cells are arranged in series via partitioning plates, wherein hydrogen gas generated at the cathode in each unit cell is passed out of each unit cell such that the hydrogen gas does not contact the cathode portion that takes part in electrolysis in the next adjacent unit cell and an electrolytic cell therefor.

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Kashiwa, Japan

Nobutaka Goto