METHOD AND EQUIPMENT FOR SEPARATION AND RECOVERY OF MERCURY

Title:

METHOD AND EQUIPMENT FOR SEPARATION AND RECOVERY OF MERCURY

Document Type and Number:

Japanese Patent JP3514244

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To separate and recover various forms of mercury, including metal mercury, with certainty from fluorescent-material powder without requiring special equipment for wastewater treatment and further to recycle the fluorescent-material powder after treatment.
SOLUTION: A bulb 12 of a waste fluorescent lump 13 is cut and a fluorescent-material film 11 formed on the inner surface of the bulb 12 is peeled off to recover the fluorescent-material powder containing mercury. The recovered fluorescent-material powder is subjected to heating and reducing treatment by dry process to vaporize and separate the mercury from the recovered fluorescent-material powder. Then the vaporized mercury is condensed by cooling and recovered.

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Inventors:

Fujiwara, Kenji
Fujinami, Kiyokatsu

Application Number:

JP2001098690A

Publication Date:

March 31, 2004

Filing Date:

March 30, 2001

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC IND CO LTD

International Classes:

B01D3/00; B01D3/34; B09B5/00; C22B5/00; C22B5/02; C22B7/00; C22B9/02; C22B43/00; B09B3/00; (IPC1-7): C22B43/00; B01D3/00; B01D3/34; B09B3/00; B09B5/00; C22B5/02; C22B7/00; C22B9/02

Attorney, Agent or Firm:

岩橋文雄（外２名）

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