【発明の名称】リン酸塩液中のNiイオン除去方法

Title:

【発明の名称】リン酸塩液中のNiイオン除去方法

Document Type and Number:

Japanese Patent JPH0633520

Kind Code:

B2

Abstract:

PURPOSE:To regenerate an aq. soln. essentially consisting of a phosphate and contg. Ni ions in such a manner that said soln. can be reused as it is by bringing the above- mentioned soln. into contact with a chelate resin adequately adjusted in the ratio of an Na type exchange group to an H type exchange group. CONSTITUTION:The non-plating face of a steel sheet S subjected to plating of a Zn-Ni alloy on one face is immersed into an electrolyte E consisting of the aq. soln. contg. sodium phosphate as the essential component in a treatment cell 1 and electricity is conducted by a conducting roll 3. The unnecessary Zn and Ni sticking to said non- plating face are removed by an anodic electrolysis. The electrolyte E in which the Ni ions accumulate as impurities is passed through a filter 5 to a chelate resin column 7 where the Ni ions are selectively removed to regenerate the electrolyte. The electrolyte is then returned by a pump 9 to the treatment cell 1. The chelate resin with which a prescribed amt. of the electrolyte treatment ends is regenerated to the chelate of the H type exchange group by a mineral acid treatment and is then treated with an aq. NaOH soln. by which the ratio of the Na type exchange group to the H type exchange group is adjusted to 25:75-75:25. The regeneration treatment of the electrolyte E is thereafter executed in the same manner as mentioned above.

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Inventors:

DAI MASAYA
FURUSHO SABURO
KONO NORIO

Application Number:

JP13006586A

Publication Date:

May 02, 1994

Filing Date:

June 06, 1986

Export Citation:

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Assignee:

SHINNIPPON SEITETSU KK
NIPPON RENSUI KK

International Classes:

C22B3/00; B01J45/00; B01J49/00; C01B25/30; C02F1/42; C22B3/42; C22B23/00; C25D5/26; C25F7/02; (IPC1-7): C25F7/02; B01J45/00; C01B25/30; C02F1/42; C22B3/42; C22B23/00

Domestic Patent References:

JP6191400A
JP57205313A
JP53127329A
JP62270800A

Attorney, Agent or Firm:

Tomoyuki Yathata (1 outside)

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